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Induced Resistance by the Toxin Filtrate of Bipolaris maydis Race T Cultivation 被引量:15
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作者 MA Chun-hong ZHAI Cai-xia +5 位作者 WANG Li-an CHEN Xia LI Yun-chao GUO Xiu-lin CUI Si-ping LI Guang-min 《Agricultural Sciences in China》 CAS CSCD 2006年第9期678-684,共7页
Resistance to maize southern leaf spot disease was induced by the low-concentration filtrate of Bipolaris maydis race T cultivation in an experiment. The nuclear neterogeny corn C103 was used as the test material. The... Resistance to maize southern leaf spot disease was induced by the low-concentration filtrate of Bipolaris maydis race T cultivation in an experiment. The nuclear neterogeny corn C103 was used as the test material. The lesion area on the leaves was significant difference by connalysis. The lesion areas on pretreated leaves were (0.3±0.05)- (0.9±0.5) mm^2, but those on the control were (23.1±8.7) mm^2. At the same time, the changes in peroxidase, phenylalanine, ammonialyase, and malondialdehvde activities were determined. During 0-96 h of inspection, phenylalanine and ammonialyase (PAL) activities increased by 64.2%, peroxidase (POD) activities increased by 41.2%, but the malondialdenvde (MDA) content decreased by 29.7% compared with the control. It seems that the low-concentration filtrate of Bipolaris maydis race T cultivation itself can be used as an elicitor to enhance the induced resistance. 展开更多
关键词 Bipolaris maydis race T filtration of cultivation PAL POD MDA induced resistance
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A Triterpenoid Inhibited Hormone-Induced Adipocyte Differentiation and Alleviated Dexamethasone-Induced Insulin Resistance in 3T3-L1 adipocytes 被引量:3
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作者 Ji-Huan Qin Jun-Zeng Ma +7 位作者 Xing-Wei Yang Ying-Jie Hu Juan Zhou Lin-Chun Fu Ru-Hua Tian Shan Liu Gang Xu Xiao-Ling Shen 《Natural Products and Bioprospecting》 CAS 2015年第3期159-166,共8页
6a-Hydroxylup-20(29)-en-3-on-28-oic acid(1),a natural triterpenoid,was found to possess the ability in a dose-dependent manner inhibiting hormone-induced adipocyte differentiation in 3T3-L1 preadipocytes,and restoring... 6a-Hydroxylup-20(29)-en-3-on-28-oic acid(1),a natural triterpenoid,was found to possess the ability in a dose-dependent manner inhibiting hormone-induced adipocyte differentiation in 3T3-L1 preadipocytes,and restoring glucose consuming ability in dexamethasone(DXM)-induced insulin resistant 3T3-L1 adipocytes.Compound 1 was also found to ameliorate DXM-induced adipocyte dysfunction in lipolysis and adipokine secretion.Mechanistic studies revealed that 1 inhibited adipocyte differentiation in 3T3-L1 preadipocytes via down-regulating hormone-stimulated gene transcription of peroxisome proliferator-activated receptor c and CCAAT-enhancer-binding protein alpha which are key factors in lipogenesis,and restored DXM-impaired glucose consuming ability in differentiated 3T3-L1 adipocytes via repairing insulin signaling pathway and activating down-stream signaling transduction by phosphorylation of signaling molecules PI3K/p85,Akt2 and AS160,thus leading to increased translocation of glucose transporter type 4 and transportation of glucose. 展开更多
关键词 6a-Hydroxylup-20(29)-en-3-on-28-oic acid 3T3-L1 Adipocyte differentiation DEXAMETHASONE induced insulin resistance Adipocyte dysfunction PI3K/Akt2 signaling
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Induced Resistance of Tomato against Gray Mold (Botrytis cinerea) by Salicylic Acid (SA) 被引量:1
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作者 Jia LIU 《Plant Diseases and Pests》 CAS 2012年第2期60-63,共4页
[ Objective ] The paper was to explore the induced resistance of tomato against gray mold (Botrytis cinerea) by salicylic acid. [ Method ] SA was used as an inducer to treat tomato seedlings, the effects of SA on my... [ Objective ] The paper was to explore the induced resistance of tomato against gray mold (Botrytis cinerea) by salicylic acid. [ Method ] SA was used as an inducer to treat tomato seedlings, the effects of SA on mycelial diameter and spore germination of B. cinerea were studied, and the changes of 4 defense enzyme activities containing catalase (CAT), peroxidase (POD), polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL), as well as malondialdehyde (MDA) content during the production process of induced resistance were also measured. [ Result] SA had no inhibitory effect against spore germination and myce- lial growth of B. cinerea within the concentration range, and the relative induced effect had different degrees of improvement after treatment. The induced effect was the best as B. cinerea was challenged to inoculate at the third day after using 150 mg/L SA in tomato plants, and the duration of resistance was 10 -15 d. After treated by SA, CAT, POD, PPO and PAL first increased and then decreased in systemic induced resistance against B. cinerea, which were significantly higher than control. Meanwhile, MDA content showed ascendant trend in wavy line form. [ Conclusion ] The use of SA within a certain concentration range is safe; CAT, POD, PPO and PAL activities have positive correlation with induced resistance against B. cinerea, the increase of MDA content also has close relationship with the imvrovement of disease resistance. 展开更多
关键词 TOMATO Gray mold Salicylic acid Mechanism of systemic resistance Systemic induced resistance China
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Blast Resistance of Rice Induced by Ag-antibiotic 702
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作者 Hu Neng Yang Shuai +3 位作者 Lei Zhihuo Tu Xiaorong Tu Guoquan Huang Lin 《Plant Diseases and Pests》 CAS 2017年第3期21-24,42,共5页
To explore rice blast resistance induced by Ag-antibiotic 702, different concentrations of Ag-antibiotic 702 were spayed on susceptible variety Luliangyou 996 at three-leaf and one-heart stage, to screen the optimal c... To explore rice blast resistance induced by Ag-antibiotic 702, different concentrations of Ag-antibiotic 702 were spayed on susceptible variety Luliangyou 996 at three-leaf and one-heart stage, to screen the optimal concentration for inducing rice blast resistance. Ag-antibiotic 702 was sprayed at seven different growth stages of rice, to determine the best growth stage for induced blast resistance and duration of blast resistance. Various treatments were inoculated with spore fluid of Magnaporthe grisea at 4 d post spraying, and disease index and incidence rate as well as induction effect of different treatments were investigated after 7 d. The results showed that six concentrations of Ag-antibiotic 702 could induce rice resistance against blast, and 15 μg/mL led to the highest blast resistance; spraying 15 μg/mL Ag-antibiotic 702 at seven different growth stages could induce rice resistance against blast ; the three-leaf and one-heart stage was the best growth stage for inducing rice blast resistance, and the relative induction effect reached 56.56% ; rice blast resistance was the highest at 48 -96 h post spraying, and duration of induced rice blast resistance exceeded 144 h. The study will provide useful experimental data for further development of Ag-antibiotic 702 and application of pre- vention and control methods against rice blast. 展开更多
关键词 Ag-antibiotic 702 RICE Rice blast induced blast resistance
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Study on Exogenous Ethylene Induced Rice Resistance to Rhizoctonia solani
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作者 Yang Shuo Zhong Qing-yan +7 位作者 Xu Xiao-feng Yang Ming-xiu Liu Lian-fu Shu Yu-wei Wang Meng Mukadasi·Rexiti Yang Song-run Zhang Jun-hua 《Journal of Northeast Agricultural University(English Edition)》 CAS 2022年第2期1-9,共9页
Rice sheath blight is one of the main diseases in rice production in China,which can make rice unable to absorb and utilize nutrients,and has a serious impact on rice yield and quality.In this study,exogenous ethylene... Rice sheath blight is one of the main diseases in rice production in China,which can make rice unable to absorb and utilize nutrients,and has a serious impact on rice yield and quality.In this study,exogenous ethylene was used to induce rice resistance against rice sheath blight,aiming at exploring a new environment-friendly control method of rice sheath blight.The results showed that within a range of certain concentrations,ethylene had no significant effects on mycelium growth,but it could induce resistance to sheath blight in rice.The optimum concentration was 0.2 mmol•L^(-1) and the relative control was 86.17%.It was found that ethylene could effectively increase the activities of peroxidase(POD),phenylalanine ammonia-lyase(PAL),β-1,3-glucanase and reduce the contents of malondialdehyde(MDA),which could enhance the resistance of rice against Rhizoctonia solani.In addition,qRT-PCR detected the expressions of rice defense genes,which indicated that the expressions of the POX,PAL and OsPR1b genes were up-regulated. 展开更多
关键词 rice sheath blight exogenous ethylene induced disease resistance
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Evaluation of Selected Chemical,Biological Fungicides,and Induced Resistance to Control White Rot(Sclerotium rolfsii Sacc.)on Tomato
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作者 Penghaing Ly Kim Eang Tho +6 位作者 RabyNget Socheath Ong Chanthin Ouk Savry Poeng Phanta Seng Theary Leng Socheat Chheum 《Journal of Environmental Science and Engineering(A)》 2022年第2期62-69,共8页
Tomato(Solanum lycopersicum)is one of the most widely grown and consumed as fresh vegetable in the world.Sclerotium rolfsii Sacc.is one of the most destructive diseases and affects more than 500 plant species.This stu... Tomato(Solanum lycopersicum)is one of the most widely grown and consumed as fresh vegetable in the world.Sclerotium rolfsii Sacc.is one of the most destructive diseases and affects more than 500 plant species.This study was conducted for“Evaluation of Selected Chemical,Biological Fungicides,and Induced Resistant to Control White Rot(Sclerotium rolfsii Sacc.)on Tomato”.The experiment was conducted at the Royal University of Agriculture and divided into two sections.The first section conducted under in vitro condition consists of four treatments T1 control treatment,T2 copper hydroxide,T3 azoxystrobin+difenoconazole,T4 metalaxyl+mancozeb in Nagoya Laboratory,and had been starting from 11st May to 15th May 2020.Section two was conducted in a pot in net-house which started from 1st January 2019 to 19th February 2019 and 1st January to 19th February 2020 and arranged in RCBD(Randomized Completely Block Design)with six replications and nine treatments.T0 negative control,T1 inoculate but not treatment,T2 metalaxyl+mancozeb,T3 azoxystrobin+difenoconazole,T4 copper hydroxide,T5 acibenzolar-S-methyl,T6 chicken dung+Trichoderma harzianum,T7 acibenzolar-S-methyl+chicken dung+Trichoderma harzianum,T8 acibenzolar-S-methyl+metalaxyl+mancozeb.Data were collected on colonizing diameter in vitro.For pot experiment collected on disease incidence,incubation period Based on the result under in vitro condition metalaxyl+mancozeb highly inhibited germination of Sclerotium rolfsii when compared with another treatment.However,the application of copper hydroxide seems less effective compared with control.For in pot experiment,when treated after symptom of southern blight appeared to seem less effective on the severity of southern blight.In contrast,when applied as a protectant and curative when symptoms appeared only systemic fungicide azoxystrobin+difenoconazole significantly reduced the severity of Sclerotium rolfsii and delayed incubation period while compared with other treatments(p<0.05)and was followed by metalaxyl+mancozeb,whereas,copper hydroxide,acibenzolar-S-methyl,chicken dung+Trichoderma harzianum,acibenzolar-S-methyl+chicken dung+Trichoderma harzianum,acibenzolar-S-methyl+metalaxyl+mancozeb were less effective(p>0.05).Based on the three experiments we can assume that fungicide is more effective in reducing the growth of the pathogen and delaying the incubation period of fungal colonization when compared with biological control and induced resistance. 展开更多
关键词 Sclerotium rolfsii Sacc. biological control Trichoderma hazianum induced resistance chemical control
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Resistance and Reactance of Monopole Fields Induced by a Test Charge Drifting Off-Axis in a Cold and Collisional Cylindrical Plasma
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作者 M.S.Bawa'aneh A.M.Al-Khateeb Y.-c.Ghim 《Chinese Physics Letters》 SCIE CAS CSCD 2018年第8期49-53,共5页
We study the interaction of a uniform, cold and collisional plasma with a test charged particle moving off-axis at a constant speed down a cylindrical tube with a resistive thick metallic wall. Upon matching the elect... We study the interaction of a uniform, cold and collisional plasma with a test charged particle moving off-axis at a constant speed down a cylindrical tube with a resistive thick metallic wall. Upon matching the electromagnetic field components at all interfaces, the induced monopole electromagnetic fields in the plasma are obtained in the frequency domain. An expression for the plasma electric resistance and reactance is derived and analyzed numerically for some representative parameters. Near the plasma resonant frequency, the plasma resistance evolves with frequency like a parallel RLC resonator with peak resistance at the plasma frequency pe, while the plasma reactance can be capacitive or inductive in nature depending on the frequency under consideration. 展开更多
关键词 In Resistance and Reactance of Monopole Fields induced by a Test Charge Drifting Off-Axis in a Cold and Collisional Cylindrical Plasma
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Response of Moderate Pest Resistant and Susceptible Cultivar of Sugarcane to Silicon Application
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作者 Michelle Vilela Jair Campos Moraes +3 位作者 Mariane Coelho Jonas Francoso Terezinha Monteiro dos Santos-Cividanes Roney Sakomura 《American Journal of Plant Sciences》 2014年第26期3823-3828,共6页
In this study, the effects of a silicon (Si) application on the biomass, chlorophyll level and silicon level of sugarcane moderate pest resistance (RB72454) and susceptible (SP801842) cultivars were tested. Investigat... In this study, the effects of a silicon (Si) application on the biomass, chlorophyll level and silicon level of sugarcane moderate pest resistance (RB72454) and susceptible (SP801842) cultivars were tested. Investigations were also carried out to assess the effect of silicon on Diatraea saccharalis infestation. The experiments were conducted in a greenhouse using the treatments consisting moderate pest resistant and susceptible culivar, with or without silicon application. The silicon was applied to the soil around the plants. The experiment was laid in complete randomized design with 4 treatments and 10 replicates. The data were subjected to an analysis of variance, and the averages were compared using the Tukey test (p ≤ 0.05). Significant changes were observed in the fresh and dry masses of the aerial portions and the root system, as well as in the plant chlorophyll and silicon levels. The silicon content increased in the susceptible variety which was significantly equal for moderate resistance variety. Chlorophyll content increased in silicon treated cultivars. Sixty days after the last application, 10 adult D. saccharalis moths were released onto each pot. However, due to the low infestation, the effects of silicon on the insect incidence could not be determined. One can conclude that silicon is beneficial for the growth of the aerial portions of sugarcane and causes a significant increase in chlorophyll levels. 展开更多
关键词 INSECT Diatraea saccharalis induced Resistance IPM
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Preliminary Studies on Induced Resistance of Cucumber to Downy Mildew 被引量:1
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作者 Wen Jingzhi, Yang Jianhua(Northeast Agricultural Vniversity, Harbin 150030. P R C) 《Journal of Northeast Agricultural University(English Edition)》 CAS 1996年第2期117-120,共4页
1 mL of sporangial suspensions (5 x 10 5spporangia per milliliter) of Pseudoperonospora cubensis was droplet-inoculated on the surface of the second leaf of the plant grown in greenhouse ( inducing inoculatoin), then ... 1 mL of sporangial suspensions (5 x 10 5spporangia per milliliter) of Pseudoperonospora cubensis was droplet-inoculated on the surface of the second leaf of the plant grown in greenhouse ( inducing inoculatoin), then the lower surfaces of the third, the forth and the fifth leaves were uniformly sprayed with inoculum of the same fungi (5 x 10 4sporangia per milliliter, about 5 mL per plant) every 3 days interval (challenge inoculation). Plants were moistened at 18- 22 C for 18 h, then kept at room temperature (24 - 28 C) and supplemented with cool-white fluorescent lights. All three challenge leaves were collected after 7 days of challenge to measure the amount of sporulation and area of necrosis. Plants prior inoculated with P. cubensis were protected 38% (based on the area of necrosis) against disaesc caused by subsequent foliar challenge with the pathogen. Protective action was about 12% after 3 days, and maintained this level until 9 days, suddenly reached 34% after 12 days, and came to a maximum after 15 days, then dropped down slowly. 展开更多
关键词 CUCUMBER induced resistance downy mildew
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2,3-Butanediol from the leachates of pine needles induces the resistance of Panax notoginseng to the leaf pathogen Alternaria panax 被引量:1
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作者 Tian-Yao Li Chen Ye +8 位作者 Yi-Jie Zhang Jun-Xing Zhang Min Yang Xia-Hong He Xin-Yue Mei Yi-Xiang Liu You-Yong Zhu Hui-Chuan Huang Shu-Sheng Zhu 《Plant Diversity》 SCIE CAS CSCD 2023年第1期104-116,共13页
Compared with the use of monocultures in the field,cultivation of medicinal herbs in forests is an effective strategy to alleviate disease.Chemical interactions between herbs and trees play an important role in diseas... Compared with the use of monocultures in the field,cultivation of medicinal herbs in forests is an effective strategy to alleviate disease.Chemical interactions between herbs and trees play an important role in disease suppression in forests.We evaluated the ability of leachates from needles of Pinus armandii to induce resistance in Panax notoginseng leaves,identified the components via gas chromatography-mass spectrometry(GC-MS),and then deciphered the mechanism of 2,3-Butanediol as the main component in the leachates responsible for resistance induction via RNA sequencing(RNA-seq).Prespraying leachates and 2,3-Butanediol onto leaves could induce the resistance of P.notoginseng to Alternaria panax.The RNA-seq results showed that prespraying 2,3-Butanediol onto leaves with or without A.panax infection upregulated the expression of large number of genes,many of which are involved in transcription factor activity and the mitogen-activated protein kinase(MAPK) signaling pathway.Specifically,2,3-Butanediol spraying resulted in jasmonic acid(JA)-mediated induced systemic resistance(ISR) by activating MYC2 and ERF1.Moreover,2,3-Butanediol induced systemic acquired resistance(SAR) by upregulating pattern-triggered immunity(PTI)-and effector-triggered immunity(ETI)-related genes and activated camalexin biosynthesis through activation of WRKY33.Overall,2,3-Butanediol from the leachates of pine needles could activate the resistance of P.notoginseng to leaf disease infection through ISR,SAR and camalexin biosynthesis.Thus,2,3-Butanediol is worth developing as a chemical inducer for agricultural production. 展开更多
关键词 Pinus armandii ALLELOPATHY HERBS Induce resistance Diversity Leaf disease
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Colonization by Klebsiella variicola FH-1 stimulates soybean growth and alleviates the stress of Sclerotinia sclerotiorum
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作者 ZHAI Qian-hang PAN Ze-qun +6 位作者 ZHANG Cheng YU Hui-lin ZHANG Meng GU Xue-hu ZHANG Xiang-hui PAN Hong-yu ZHANG Hao 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2023年第9期2729-2745,共17页
Sclerotinia stem rot,caused by Sclerotinia sclerotiorum,is a destructive soil-borne disease leading to huge yield loss.We previously reported that Klebsiella variicola FH-1 could degrade atrazine herbicides,and the ve... Sclerotinia stem rot,caused by Sclerotinia sclerotiorum,is a destructive soil-borne disease leading to huge yield loss.We previously reported that Klebsiella variicola FH-1 could degrade atrazine herbicides,and the vegetative growth of atrazine-sensitive crops(i.e.,soybean)was significantly increased in the FH-1-treated soil.Interestingly,we found that FH-1 could promote soybean growth and induce resistance to S.sclerotiorum.In our study,strain FH-1 could grow in a nitrogen-free environment,dissolve inorganic phosphorus and potassium,and produce indoleacetic acid and a siderophore.The results of pot experiments showed that K.variicola FH-1 promoted soybean plant development,substantially improving plant height,fresh weight,and root length,and induced resistance against S.sclerotiorum infection in soybean leaves.The area under the disease progression curve(AUDPC)for treatment with strain FH-1 was significantly lower than the control and was reduced by up to 42.2%within 48 h(P<0.001).Moreover,strain FH-1 rcovered the activities of catalase,superoxide dismutase,peroxidase,phenylalanine ammonia lyase,and polyphenol oxidase,which are involved in plant protection,and reduced malondialdehyde accumulation in the leaves.The mechanism of induction of resistance appeared to be primarily resulted from the enhancement of transcript levels of PR10,PR12,AOS,CHS,and PDF1.2 genes.The colonization of FH-1 on soybean root,determined using CLSM and SEM,revealed that FH-1 colonized soybean root surfaces,root hairs,and exodermis to form biofilms.In summary,K.variicola FH-1 exhibited the biological control potential by inducing resistance in soybean against S.sclerotiorum infection,providing new suggestions for green prevention and control. 展开更多
关键词 sclerotinia stem rot of soybean Klebsiella variicola FH-1 inducing resistance root colonization BIOFILM
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Research Progress in Biological Control of Soft Rot of Amorphophallus konjac
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作者 Lisha NIU Tongshu DAI +6 位作者 Zhenliang CAO Boxuan JIA Bo HUANG Lijuan DENG Shuanglin YANG Zhen REN Yu ZHONG 《Asian Agricultural Research》 2023年第5期41-43,共3页
In this paper,the main control methods of soft rot of Amorphophallus konjac are reviewed,with a focus on the current research status of using plant growth promoting rhizobacteria for biological control of soft rot of ... In this paper,the main control methods of soft rot of Amorphophallus konjac are reviewed,with a focus on the current research status of using plant growth promoting rhizobacteria for biological control of soft rot of A.konjac,and future research directions are looked forward to. 展开更多
关键词 Amorphophallus konjac Soft rot Plant growth promoting rhizobacteria induced resistance
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机械损伤和昆虫取食诱导杨树叶片内过氧化氨的代谢与相关酶活性的变化 被引量:11
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作者 安钰 沈应柏 张志翔 《Journal of Forestry Research》 SCIE CAS CSCD 2009年第2期156-160,I0003,共6页
The changes of hydrogen peroxide (H2O2) metabolism and antioxidant enzyme activities in a hybrid poplar (Populus simonii xp. pyramidalis 'Opera 8277') in response to rnechanical damage (MD) and herbivore wound... The changes of hydrogen peroxide (H2O2) metabolism and antioxidant enzyme activities in a hybrid poplar (Populus simonii xp. pyramidalis 'Opera 8277') in response to rnechanical damage (MD) and herbivore wounding (HW) were investigated to determine whether H2O2 could function as the secondary messenger in the signaling of systemic resistance. Results show that H2O2 was generated in wounded leaves through MD and HW treatments and systemically in unwounded leaves around the wounded leaves. The activities of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) were also enhanced. However, the H2O2 accumulation and antioxidant enzyme activities were inhibited in MD leaves through the pretreatment with DPI (which is a specific inhibitor of NADPH oxidase). The results of this study suggest that H2O2 could be systemically induced by MD and HW treatments, and H2O2 metabolism was closely related to the change in SOD, APX and CAT activities. A high level of antioxidant enzymes could decrease membrane lipid peroxidation levels and effectively induce plant defense responses. 展开更多
关键词 antioxidant enzymes herbivore wound induced resistance mechanical damage reactive oxygen species
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5种化学试剂诱导黄瓜抗霜霉病的研究(英文) 被引量:1
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作者 刘高峰 《Plant Diseases and Pests》 CAS 2011年第5期11-13,17,共4页
[ Objectlve] The paper was to compare the induced resistance of several chemicals on cucumber against Pseudoperonospora cubensis [ Method ] When the cucumber seedlings grew to 4-leaf stage, the second true leaf was tr... [ Objectlve] The paper was to compare the induced resistance of several chemicals on cucumber against Pseudoperonospora cubensis [ Method ] When the cucumber seedlings grew to 4-leaf stage, the second true leaf was treated with salicylic acid, oxalate, chitosan, calcium nitrate and Na2HPO4, the activity of protective enzymes in the third leaf was determined after 7 d. At the same time, inoculation test was also conducted after induced treatment, and the disease condi- tion was coumed. [ Result ] These chemical treatments promoted protective enzyme activities (POD, SOD, PAL, PPO) in different degree, improved the ultra-weak luminescence, and reduced the disease index of cucumber leaves. [ Conclusion] Five chemical treatments expressed good effects on induced resistance. Among the treatments, oxalate had the best induced effect, followed by salicylic acid, chitosan, Na2 HPO4 and calcium nitrate. 展开更多
关键词 CUCUMBER Pseudoperonospora cubens/s induced resistance Ultraweak luminescence China
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Advances on Rare Earth Application in Pollution Ecology 被引量:28
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作者 黄晓华 周青 张光生 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第1期5-11,共7页
The use of rare earth for inducing plant resistance was reviewed. The important developments in recent years were described, and rare earth can alleviate the pollution of acid rain, ozone, pesticide, heavy metals etc.... The use of rare earth for inducing plant resistance was reviewed. The important developments in recent years were described, and rare earth can alleviate the pollution of acid rain, ozone, pesticide, heavy metals etc. in environment. The authors suggest that the mechanism of rare earth to inducing plant resistance and reducing plant injury is to control biochemical metabolism web in plant cell, to adjust its protection system of free radical, to maintain its photosynthesis, to protect cell membrane system and to carry through its function on mineral metabolism. Meanwhile some problems in the field were discussed as well. 展开更多
关键词 pollution ecology resistance pollution function inducing plants resistance plant rare earths
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Postharvest Chitosan Treatment Induces Resistance in Potato Against Fusarium sulphureum 被引量:25
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作者 SUN Xiao-juan BI Yang +2 位作者 LI Yong-cai HAN Rui-feng GE Yong-hong 《Agricultural Sciences in China》 CAS CSCD 2008年第5期615-621,共7页
The effects of chitosan treatment and inoculation on dry rot in tubers and slices of potato were studied. The results showed that chitosan treatment significantly reduced the lesion diameter of potato inoculated with ... The effects of chitosan treatment and inoculation on dry rot in tubers and slices of potato were studied. The results showed that chitosan treatment significantly reduced the lesion diameter of potato inoculated with Fusarium sulphureum. The treatment at 0.25% showed the best effect. Chitosan at 0.25% increased the activities of peroxidase and polyphenoloxidase, and the contents of flavonoid compounds and lignin in tissues. Increased activities of 13-1,3-glucanase, and phenylalanine ammonialyase were observed, but there were no significant differences between the treated and the control. These findings suggested that the effects of chitosan could be associated with the induced resistance against Fusarium dry rot in potato. 展开更多
关键词 CHITOSAN POTATO DECAY induced resistance
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Postharvest Treatment with β-Aminobutyric Acid Induces Resistance Against Dry Rot Caused by Fusarium sulphureum in Potato Tuber 被引量:25
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作者 YIN Yan LI Yong-cai +5 位作者 BI Yang CHEN Song-jiang LI Ying-chao YUAN Li WANG Yi WANG Di 《Agricultural Sciences in China》 CAS CSCD 2010年第9期1372-1380,共9页
The effectiveness ofpostharvest β-aminobutyric acid (BABA) treatment was studied for inducing resistance against dry rot caused by Fusarium sulphureum in tubers and slices of two potato cultivars (resistant cultiv... The effectiveness ofpostharvest β-aminobutyric acid (BABA) treatment was studied for inducing resistance against dry rot caused by Fusarium sulphureum in tubers and slices of two potato cultivars (resistant cultivar Shepody and susceptible cultivar Xindaping). The results showed that BABA at 100 mmol L-1 significantly reduced lesion diameter in inoculated both tubers and slices. The chemical at 100 mmol L-1 showed an effective reduction in infection ability ofF. sulphureum inoculated 48 and 72 h after treatment in slices of resistant cultivar, and 72 and 96 h in susceptible ones. BABA increased the activitives of peroxidase (POD), polyphenoloxidase (PPO) and phenylalanine ammonialyase (PAL), and accumulated the contents of lignin, flavonoids and phenolics in slices. The resistant cultivar had a stronger resistant response than the susceptible one. These findings suggest that the BABA treatment can induce the resistance in potato tubers, however, the inducing degree depends on the original level of resistance present in each cultivar. 展开更多
关键词 ELICITORS POTATO postharvest disease induced resistance
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Induction of Tolerance to Fusarium Wilt and Defense-Related Mechanisms in the Plantlets of Susceptible Berangan Banana Pre-Inoculated with Pseudomonas sp.(UPMP3) and Burkholderia sp.(UPMB3) 被引量:16
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作者 Elya Masya Mohd Fishal Sariah Meon Wong Mui Yun 《Agricultural Sciences in China》 CAS CSCD 2010年第8期1140-1149,共10页
This study is aimed at assessing the ability of two endophytic bacteria originally isolated from healthy oil palm roots, Pseudomonas sp. (UPMP3) and Burkholderia sp. (UPMB3) to induce resistance in susceptible Ber... This study is aimed at assessing the ability of two endophytic bacteria originally isolated from healthy oil palm roots, Pseudomonas sp. (UPMP3) and Burkholderia sp. (UPMB3) to induce resistance in susceptible Berangan banana against Fusarium oxysporum race 4 (FocR4). Increased accumulation of resistance-related enzymes such as peroxidase (PO), phenylalanine ammonia lyase (PAL), lignithioglycolic acid (LTGA), and pathogenesis-related (PR) proteins (ehitinase and β-1,3-glucanase) has been observed in plantlets treated with endophytic bacteria UPMP3 and UPMB3 singly or as mixture under glasshouse conditions. Pre-inoculation of banana plantlets with UPMP3 showed a significant reduction in Fusarium wilt incidence 72 d after challenged inoculation with FocR4. UPMB3 was less effective in suppressing Fusarium wilt compared to UPMP3, whereas, the mixture of both endophytes showed an intermediate effect. Based on these results, it is concluded that UPMP3 could be a promising biological control agent that can trigger resistance against Fusarium wilt in susceptible Berangan banana. 展开更多
关键词 BANANA Pseudomonas sp. Burkholderia sp. induce resistance Fusarium wilt
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Induces Resistance Against Fusarium and Pink Rots by Acibenzolar-S-Methyl in Harvested Muskmelon (cv.Yindi) 被引量:19
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作者 GE Yong-hong BI Yang LI Xuan LI Mei 《Agricultural Sciences in China》 CAS CSCD 2008年第1期58-64,共7页
Acibenzolar-S-methyl (ASM) is a chemical activator of systematic resistance in many plants. The effect of preharvest and postharvest application of ASM was evaluated for its ability to induce resistance in muskmelon... Acibenzolar-S-methyl (ASM) is a chemical activator of systematic resistance in many plants. The effect of preharvest and postharvest application of ASM was evaluated for its ability to induce resistance in muskmelon fruit. The results indicated that 50 and 100 mg L^-1 ASM or 1 mL L^-1 imazalil at 1 week or 1 day before harvest were effective in reducing the lesion area with 100 mg L^-1 ASM the most effective. No treatment inhibited the infection rate. The postharvest results showed that 50 and 100 mg L^-1 ASM, and 0.1 mL L^-1 imazalil were effective in reducing the lesion area with 100 mg L^-1 ASM the most effective. No treatment inhibited the infection rate. There was a clear time-dependent response of the fruit to postharvest ASM treatment, in which treatments applied 1, 3, and 5 day before inoculation provided the best results. ASM did not demonstrate any fungicide effect in vitro and suppressed lesion area in treated muskmelons, indicating that disease resistance was induced. The protection of ASM was associated with the activation of peroxidase (POD) in treated muskmelons. 展开更多
关键词 acibenzolar-S-methyl (ASM) induced resistance MUSKMELON peroxidase (POD)
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Hot air treatment activates defense responses and induces resistance against Botrytis cinerea in strawberry fruit 被引量:10
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作者 JIN Peng ZHENG Cong +3 位作者 HUANG Yu-ping WANG Xiao-li LUO Zi-sheng ZHENG Yong-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2016年第11期2658-2665,共8页
The effect of hot air(HA, 45°C, 3.5 h) treatment on reducing gray mold caused by Botrytis cinerea in strawberry fruit and the possible mechanisms were investigated. The results showed that HA treatment signific... The effect of hot air(HA, 45°C, 3.5 h) treatment on reducing gray mold caused by Botrytis cinerea in strawberry fruit and the possible mechanisms were investigated. The results showed that HA treatment significantly reduced lesion diameter and enhanced activities of chitinase(CHI), β-1,3-glucanase and phenylalanine ammonia-lyase(PAL) in strawberry fruit. Total phenolic contents were also increased by HA treatment. The activities of antioxidant enzymes including superoxide dismutase(SOD), catalase(CAT) and ascorbate peroxidase(APX) were higher in HA treated strawberry fruit than those in control. Expression of three defense related genes such as CAT, CCR-1 allele and PLA6 was greatly induced in HA treated strawberry fruit with or without inoculation by B. cinerea. In addition, the in vitro experiment showed that HA treatment inhibited spore germination and tube growth of B. cinerea. These results suggested that HA treatment directly activated disease resistance against B. cinerea in strawberry fruit without priming response and directly inhibiting growth of B. cinerea. 展开更多
关键词 STRAWBERRY hot air postharvest disease induced resistance Botrytis cinerea
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