期刊文献+
共找到156篇文章
< 1 2 8 >
每页显示 20 50 100
海蓬子(Salicornia europaea)生态浮床对富营养化海水的净化效果研究
1
作者 罗梓峻 李秋芬 +2 位作者 田文杰 左涛 陈聚法 《生态与农村环境学报》 CAS CSCD 北大核心 2024年第4期548-555,共8页
因陆源污染输入和沿岸养殖业发展,我国近岸和入海口海域富营养化严重。该研究利用海蓬子(Salicornia europaea)高耐盐碱性、潮汐带生长的特点,通过浮床栽培探究了其对富营养海水的净化效果。实验构建褐牙鲆(Paralichthys olivaceus)养... 因陆源污染输入和沿岸养殖业发展,我国近岸和入海口海域富营养化严重。该研究利用海蓬子(Salicornia europaea)高耐盐碱性、潮汐带生长的特点,通过浮床栽培探究了其对富营养海水的净化效果。实验构建褐牙鲆(Paralichthys olivaceus)养殖池和浮床净化池的循环水净化系统,模拟持续污染的富营养化海水环境。通过在浮床上移植海蓬子幼苗,测定不同水体中氨氮(NH_(4)^(+)-N)、硝态氮(NO_(3)^(-)-N)、亚硝态氮(NO_(2)^(-)-N)和磷酸盐(PO_(4)^(3-)-P)浓度4种营养盐指标的变化情况及植物存活、生长状况,研究海蓬子的净化效果。实验结果表明,海蓬子对NH_(4)^(+)-N吸收效果显著(P<0.05),在12 h的水力停留时间下最高去除率为32.97%;对NO_(2)^(-)-N的净化效果显著(P<0.05),最高去除率为35.66%;对PO_(4)^(3-)-P和NO_(3)^(-)-N有去除效果,但不显著;浮床上的海蓬子存活率达93%以上,植株有明显生长,25 d总体长度增长12%,鲜重增加102%,干重增加83%。研究结果说明海蓬子可以作为生态浮床的工具植物,对近岸和入海口富营养化海水进行净化,为海洋生态环境保护提供技术支撑。 展开更多
关键词 海蓬子 生态浮床 生境修复 富营养化海水
下载PDF
A Network Pharmacology-Based Study on Antidepressant Effect of Salicornia europaea L.Extract with Experimental Support in Chronic Unpredictable Mild Stress Model Mice
2
作者 SUN Dan-chen WANG Ran-ran +4 位作者 XU Hao ZHU Xue-hui SUN Yan QIAO Shi-qing QIAO Wei 《Chinese Journal of Integrative Medicine》 SCIE CAS CSCD 2022年第4期339-348,共10页
Objective:To investigate the pharmacodynamic material basis,mechanism of actions and targeted diseases of Salicornia europaea L.(SE)based on the network pharmacology method,and to verify the antidepressant-like effect... Objective:To investigate the pharmacodynamic material basis,mechanism of actions and targeted diseases of Salicornia europaea L.(SE)based on the network pharmacology method,and to verify the antidepressant-like effect of the SE extract by pharmacological experiments.Methods:Retrieval tools including Chinese medicine(CM),PubMed,PharmMapper,MAS 3.0 and Cytoscape were used to search the components of SE,predict its targets and related therapeutic diseases,and construct the"Component-TargetPathway"network of SE for central nervous system(CNS)diseases.Further,protein-protein interaction(PPI)network,Kyoto Encyclopedia of Genes and Genomes(KEGG)and Gene Ontology(GO)function annotation of depression-related targets were analyzed to predict the antidepressant mechanism of SE.Chronic unpredictable mild stress(CUMS)model was used to construct a mouse model with depression-like symptoms.And the animals were randomly divided into 6 groups(n=10)including the normal group(nonstressed mice administered with distilled water),the CUMS group(CUMS mice administered with distilled water),the venlafaxine group(CUMS mice administered with venlafaxine 9.38 mg/kg),SE high-,medium-,and low-dose groups(CUMS mice administered with SE 1.8,1.35 and 0.9 g/kg,respectively).Then some relevant indicators were determined for experimental verification by the forced swim test(FST),the tail suspension test(TST)and open-field test(OFT).Dopamine(DA)concentration in hippocampus and cerebral cortex,IL-2 and corticosterone(CORT)levels in blood,and nuclear factor E2 related factor 2(Nrf2),kelch-like epichlorohydrin related protein 1(Keap1),NAD(P)H dehydrogenase[quinone]1(NQO1)and heme oxygenase-1(HO-1)levels in mice were measured by enzyme linked immunosorbent assay(ELISA)and Western blot respectively to explore the possible mechanisms.Results:The"target-disease"network diagram predicted by network pharmacology,showed that the potential target of SE involves a variety of CNS diseases,among which depression accounts for the majority.The experimental results showed that SE(1.8,1.35 g/kg)significantly decreased the immobility period,compared with the CUMS group in FST and TST in mice after 3-week treatment,while SE exhibited no significant effect on exploratory behavior in OFT in mice.Compared with CUMS group,the SE group(0.9 g/kg)showed significant differences(P<0.05)in DA levels in the hippocampus and cerebral cortex.In addition,compared with CUMS control group,SE(1.8 g/kg)group showed a significant effect on decreasing the activities of CORT(P<0.05),and serum IL-2level with no statistical significance.Finally,Western blot results showed that compared with the model group,Nrf2,Keap1,NQO1 and HO-1 protein expressions in SE group(1.8 g/kg)were up-regulated(all P<0.01).Conclusion:The SE extract may have an antidepressant effect,which appeared to regulate Nrf2-ARE pathway and increased levels of DA and CORT in the hippocampus and cortex. 展开更多
关键词 salicornia europaea l. network pharmacology tail suspension test forced swim test DEPRESSION
原文传递
Transplantation and Post-planting Tending and Management Techniques of Olive Trees(Olea europaea L.)
3
作者 Jianzhou QUAN Jing WANG +1 位作者 Wangnian LI Dezhi JIANG 《Agricultural Biotechnology》 CAS 2023年第4期22-24,共3页
This paper introduced the preparation work before transplanting big olive trees(Olea europaea L.),including key technical measures such as plant excavation,transportation,planting,and post-planting tending.The aim was... This paper introduced the preparation work before transplanting big olive trees(Olea europaea L.),including key technical measures such as plant excavation,transportation,planting,and post-planting tending.The aim was to provide scientific basis and feasible solutions for adjusting the density of olive trees in Shiyan City,and to assist in the high-quality development of the olive industry. 展开更多
关键词 Olea europaea l. Big trees TRANSPlANTATION Tending and management Survival rate
下载PDF
Predicting ADME/Tox properties of hydroxytyrosol in the leaves of Olea europaea L.
4
作者 Suzhen Jiang Xinghua Liu +3 位作者 Hongjian Yu Shihong Li Jingming Jia Anhua Wang 《Asian Journal of Traditional Medicines》 CAS 2023年第2期45-53,共9页
In order to study the possibility of hydroxytyrosol(HT)as a drug,we used SwissADME system to predict ADME of HT and pkCSM system to predict Tox of HT.The results show that hydroxytyrosol meets the Lipinski’s five pri... In order to study the possibility of hydroxytyrosol(HT)as a drug,we used SwissADME system to predict ADME of HT and pkCSM system to predict Tox of HT.The results show that hydroxytyrosol meets the Lipinski’s five principles of drug-like properties.With strong efficacy and pharmacological activity,HT has high drug-likeness degree.With good bioavailability,it can be easily absorbed by the gastrointestinal tract,though not absorbed by skin.Hydroxytyrosol has not only a strong potency and pharmacological activity,but also no liver toxicity and skin allergy.Tox data predicts that it has mutagenic potential,which may be the result of overreduction. 展开更多
关键词 Olea europaea l. hydroxytyrosol(HT) ADEM/Tox pharmacological activity
下载PDF
油橄榄(O.europaea L.)在四川的现状与开发研究 被引量:6
5
作者 徐作英 严伟 《四川师范大学学报(自然科学版)》 CAS CSCD 2002年第4期435-437,共3页
介绍了油橄榄树种的植物生物学特性、生长习性和对生长环境的生态因素的要求 ,对在四川各地零星散落的各个品种进行了相关因子的比较 ,并对各品种现状表现呈现差异性的原因进行了分析 ,为油橄榄作为退耕还林、生态重建和农村小康建设的... 介绍了油橄榄树种的植物生物学特性、生长习性和对生长环境的生态因素的要求 ,对在四川各地零星散落的各个品种进行了相关因子的比较 ,并对各品种现状表现呈现差异性的原因进行了分析 ,为油橄榄作为退耕还林、生态重建和农村小康建设的造林绿化经济植物的开发推广提出了一系列设想和措施 . 展开更多
关键词 油橄榄 造林绿化 开发研究
下载PDF
Arbuscular Mycorrhizal Fungal Diversity Associated with Olea europaea L. Growing in Yunnan Province, Southwestern China
6
作者 Yuebo Jing Jihua Mao Rongbo Li 《Phyton-International Journal of Experimental Botany》 SCIE 2022年第12期2719-2732,共14页
Olive(Olea europaea L.)is one of the most important and widely cultivated fruit trees,with high economic,ecological,cultural and scientific value.China began introducing and cultivating olive in the 1960s,and Yunnan P... Olive(Olea europaea L.)is one of the most important and widely cultivated fruit trees,with high economic,ecological,cultural and scientific value.China began introducing and cultivating olive in the 1960s,and Yunnan Province is one of the main growing areas.Improving the cultivation and productivity of this tree crop species is an important challenge.Olive is a typical mycotrophic species and the potential of arbuscular mycorrhizal fungi(AMF)for this plant is well recognized;nevertheless,studies of olive AMF in China are still very limited.Roots and rhizosphere soils of olive were sampled from five representative growing sites in the Yunnan Province of China to investigate the AMF colonization status in the root systems,the AMF community in the olive orchards and the edaphic factors influencing the arbuscular mycorrhizal(AM)parameters.Root samples of olive trees from different growing sites generally showed AMF colonization,suggesting that autochthonous AMF manifest a high efficiency in colonizing the roots of olive plants.The spore density on the five sites ranged from 81.6 to 350 spores per 20 g soil.Twenty-three AMF species from 9 genera were identified in total,and Glomeraceae was the dominant family.The findings of our study suggested a high AMF diversity harbored by olive growing in different areas of the Yunnan Province,Southwestern China.Furthermore,the hyphal colonization in roots positively correlated with soil pH and EC.The arbuscule colonization in olive roots negatively correlated with soil pH,EC,OM,TN,TP and AN.The spore density positively correlated with OM,TN,AN,AP and sand content.Finally,the Shannon index of AMF in the rhizosphere soil positively correlated with the clay content,but negatively correlated with soil pH,TN and silt content.The high diversity of autochthonous AMF in Yunnan is promising for screening AMF isolates for utilization in the efficient cultivation of this crop. 展开更多
关键词 AMF community spore identification edaphic factor Olea europaea l.
下载PDF
Effect of Foliar Spray of Fe, GA3, Cultivars and Their Interactions on Growth of Olive (Olea europaea L.) Transplants cvs. Khithairy and Sorany
7
作者 Azad Ahmed Mayi Amira Salih Abdulrhman Zulaikha Ramazan Ibrahim 《Journal of Agricultural Science and Technology(B)》 2013年第5期358-368,共11页
关键词 叶面喷施 相互作用 螯合铁 赤霉素 油橄榄 品种 移植 CVS
下载PDF
Modelling the impacts of cover crop management strategies on the water use,carbon exchange and yield of olive orchards
8
作者 Alvaro López-Bernal Omar García-Tejera +1 位作者 Luca Testi Francisco J.Villalobos 《Journal of Forestry Research》 SCIE CAS CSCD 2023年第1期283-295,共13页
Cover crops have long been proposed as an alternative soil management for minimizing erosion rates in olive stands while providing additional ecosystem services.However,the trade-off between these benefits and the com... Cover crops have long been proposed as an alternative soil management for minimizing erosion rates in olive stands while providing additional ecosystem services.However,the trade-off between these benefits and the competition for water with the trees makes the definition of optimal management practices a challenging task in semiarid climates.This work presents an improved version of OliveCan,a process-based simulation model of olive orchards that now can simulate the main impacts of cover crops on the water and carbon balances of olive orchards.Albeit simple in its formulation,the new model components were developed to deal with different cover crop management strategies.Examples are presented for simulation runs of a traditional olive orchard in the conditions of southern Spain,evaluating the effects of different widths for the strip occupied by the cover crop(Fcc)and two contrasting mowing dates.Results revealed that high Fccresulted in lower olive yields,but only when mowing was applied at the end of spring.In this regard,late mowing and high Fccwas associated with lower soil water content from spring to summer,coinciding with olive flowering and the earlier stages of fruit growth.Fccwas also negatively correlated with surface runoff irrespective of the mowing date.On the other hand,net ecosystem productivity(NEP)was substantially affected by both Fccand mowing date.Further simulations under future climate scenarios comparing the same management alternatives are also presented,showing substantial yield reductions by the end of the century and minor or negligible changes in NEP and seasonal runoff. 展开更多
关键词 Carbon exchange Cover crops Crop modelling EVAPOTRANSPIRATION Olea europaea l
下载PDF
Na_2CO_3和NaCl处理对盐角草生长和抗氧化酶活性的影响 被引量:5
9
作者 周峰 周泉澄 +1 位作者 华春 陈全战 《安徽农业科学》 CAS 北大核心 2007年第36期11748-11750,共3页
[目的]研究不同浓度Na2CO3和NaCl处理的盐生植物盐角草生长和抗氧化酶活性的变化,探究Na2CO3胁迫对盐生植物伤害的原因。[方法]以盐角草为实验材料,以相同Na+浓度的Na2CO3和NaCl处理盐角草,通过比较研究两种盐胁迫对盐角草生长和抗氧化... [目的]研究不同浓度Na2CO3和NaCl处理的盐生植物盐角草生长和抗氧化酶活性的变化,探究Na2CO3胁迫对盐生植物伤害的原因。[方法]以盐角草为实验材料,以相同Na+浓度的Na2CO3和NaCl处理盐角草,通过比较研究两种盐胁迫对盐角草生长和抗氧化酶系统的影响。[结果]NaCl处理显著促进盐角草生长和提高抗氧化酶系统中的超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性,而相同Na+浓度的Na2CO3却明显抑制盐角草生长,SOD、POD和CAT的活性也受到抑制,超氧阴离子(O2.-)和丙二醛(MDA)含量的增加程度明显高于等渗的NaCl处理。[结论]Na2CO3处理下,盐角草抗氧化酶活性的显著下降明显不同于NaCl处理,这是导致Na2CO3处理下盐角草生长量降低的原因之一。 展开更多
关键词 盐角草 NA2CO3 NACl 生长 抗氧化酶
下载PDF
武都地区初榨橄榄油酚类和脂肪酸组成对油脂氧化稳定性研究
10
作者 唐凤霞 李川 +3 位作者 周昊 陈虹霞 张昌伟 王成章 《林产化学与工业》 CAS CSCD 北大核心 2024年第1期111-119,共9页
对武都地区的白橄榄(U)、恩帕特雷(E)、奇迹(K)、阿斯(As)、中山24(Z)、云台14(Y)、皮瓜尔(P)、豆果(Arbe)、小苹果(M)、鄂植8(Ez)、阿尔伯萨拉(Arbo)、科拉蒂(C)、莱星(L)、佛奥(F)这14个品种初榨橄榄油的脂肪酸、酚类成分及油脂氧化... 对武都地区的白橄榄(U)、恩帕特雷(E)、奇迹(K)、阿斯(As)、中山24(Z)、云台14(Y)、皮瓜尔(P)、豆果(Arbe)、小苹果(M)、鄂植8(Ez)、阿尔伯萨拉(Arbo)、科拉蒂(C)、莱星(L)、佛奥(F)这14个品种初榨橄榄油的脂肪酸、酚类成分及油脂氧化稳定性进行检测和分析,单因素方差分析表明:品种间多酚和脂肪酸含量及油脂氧化稳定性存在显著性差异(p<0.05)。所有分析样品的脂肪酸组成均符合欧盟特级初榨橄榄油标准,初榨橄榄油中油酸质量分数在(56.12±0.24)%(豆果)和(71.45±0.42)%(科拉蒂)之间,亚油酸质量分数在(5.73±0.06)%(皮瓜尔)和(15.80±0.05)%(阿斯)之间,棕榈酸质量分数在(12.67±0.12)%(科拉蒂)和(18.76±0.04)%(豆果)之间。裂环烯醚萜类是主要的酚类成分,总酚质量分数最高为奇迹,为(471.35±29.34)mg/kg,最低为豆果,仅(165.65±8.08)mg/kg。主成分分析表明:富含橄榄苦苷苷元、女贞子苷元、橄榄裂环烯醚萜、油酸、芹菜素的品种氧化稳定性越高,而富含棕榈酸、亚油酸、酪醇、羟基酪醇、刺激醛的品种氧化稳定性越低。基于芹菜素、橄榄裂环烯醚萜、木犀草素和亚油酸建立的多元线性逐步回归模型可以预测90.70%的油脂氧化稳定性变化(p<0.001)。 展开更多
关键词 油橄榄 裂环烯醚萜类 脂肪酸 主成分分析 多元线性逐步回归分析
下载PDF
NaCl胁迫对盐角草不同阶段生长和水分生理的影响 被引量:4
11
作者 包灵 黄俊华 +1 位作者 杨文英 王锋 《山东农业科学》 2017年第6期48-53,共6页
采用室内盆栽方法研究了不同浓度NaCl处理对盐角草不同阶段(7、21、42 d)生长和水分生理的影响。结果表明:任一阶段中,随着盐浓度的升高,盐角草鲜重、束缚水含量呈先上升后下降趋势;水势、含水量(占鲜重)呈下降趋势;自由水/束缚水呈先... 采用室内盆栽方法研究了不同浓度NaCl处理对盐角草不同阶段(7、21、42 d)生长和水分生理的影响。结果表明:任一阶段中,随着盐浓度的升高,盐角草鲜重、束缚水含量呈先上升后下降趋势;水势、含水量(占鲜重)呈下降趋势;自由水/束缚水呈先下降后上升趋势。株高在处理7 d时随盐浓度升高而升高,21 d随盐浓度升高先上升后下降,42 d随盐浓度升高而下降。外渗物的量在1周内随盐浓度升高呈先下降后上升趋势,之后随盐浓度的升高而升高。自然饱和亏在短时间内(7 d)随盐浓度升高而下降,21 d时则随盐浓度升高先下降后升高,42 d随盐浓度升高呈现先上升后降低趋势。综上所述,盐角草的生长是需盐的,200~400mmol/L NaCl浓度对其生长是顺境,无盐或高盐(>400 mmol/L)环境对其生长是逆境。 展开更多
关键词 NACl胁迫 盐角草 不同阶段 水分生理
下载PDF
气象因子对油橄榄多孔横沟象种群动态的影响
12
作者 侯宝宏 冯刚刚 +1 位作者 陈源 马永祥 《安徽农业科学》 CAS 2024年第7期104-108,共5页
采用昆虫诱捕网对陇南市油橄榄多孔横沟象(Pimelocerus perforates Roelofs)种群动态进行了监测,并结合同期气象因子,分析影响其种群动态变化的关键气象因子。结果表明:陇南地区多孔横沟象一年发生2代,主要以老熟幼虫在枝干中越冬,个别... 采用昆虫诱捕网对陇南市油橄榄多孔横沟象(Pimelocerus perforates Roelofs)种群动态进行了监测,并结合同期气象因子,分析影响其种群动态变化的关键气象因子。结果表明:陇南地区多孔横沟象一年发生2代,主要以老熟幼虫在枝干中越冬,个别出现成虫在枝干中越冬,始见成虫为3月中旬,5月上旬和8月中下旬为盛发期,11月中旬开始进入越冬期。统计分析表明,多孔横沟象在不同危害时期主要影响气象因子不同,3月中旬至5月上旬影响成虫数量的主要气象因子是降雨量(P<0.01),5月中旬至8月下旬成虫数量与平均最高温显著负相关(P<0.01),而在9月上旬至11月上旬温度(平均温度、平均最高温、平均最低温)是该阶段影响成虫数量的关键气象因子,平均温度相关性最强。 展开更多
关键词 油橄榄 多孔横沟象 种群动态 气象因子 陇南市
下载PDF
应用电导率法及Logistic方程测定油橄榄品种的抗寒性 被引量:13
13
作者 令凡 李朝周 +2 位作者 回振龙 焦健 吕鹏 《广东农业科学》 CAS 2015年第1期13-17,共5页
对6个油橄榄品种进行低温胁迫(5、0、-5、-10℃)处理,应用电导率法及Logistic方程测定不同油橄榄品种的抗寒性。结果表明,油橄榄叶片相对电导率随着处理温度的不断降低而呈"S"型曲线变化,叶片伤害率变化趋势与叶片相对电导率... 对6个油橄榄品种进行低温胁迫(5、0、-5、-10℃)处理,应用电导率法及Logistic方程测定不同油橄榄品种的抗寒性。结果表明,油橄榄叶片相对电导率随着处理温度的不断降低而呈"S"型曲线变化,叶片伤害率变化趋势与叶片相对电导率基本一致;在相同处理温度下叶片伤害率和相对电导率有较大差异,间接反映了不同品种的抗寒性强弱,结合Logistic方程可计算油橄榄的半致死温度(LT50);油橄榄叶片SOD、POD、CAT酶活性随胁迫温度的降低总体上均呈先升高后下降的趋势,其中皮削利的3种酶活性均显著高于其他品种;6个品种的油橄榄抗寒性差异显著,由强到弱依次为皮削利>配多灵>莱星>阿斯>鄂植8号>佛奥。 展开更多
关键词 油橄榄 抗寒性 相对电导率 lOGISTIC方程 半致死温度
下载PDF
RLM-RACE法快速克隆盐角草胆碱单加氧酶cDN A5′末端全序列 被引量:2
14
作者 葛庆燕 吴凇 +1 位作者 苏乔 安利佳 《辽宁师范大学学报(自然科学版)》 CAS 北大核心 2005年第3期336-338,共3页
采用RLM-RACE法,根据已获得的盐角草胆碱单加氧酶基因的部分序列,设计2条特异性嵌套PCR引物,成功地克隆了该基因cDNA 5′末端全序列,测序结果显示该片段包括5′UTR 154个核苷酸和编码区606个核苷酸,编码N端202个氨基酸.Blast P结果表明... 采用RLM-RACE法,根据已获得的盐角草胆碱单加氧酶基因的部分序列,设计2条特异性嵌套PCR引物,成功地克隆了该基因cDNA 5′末端全序列,测序结果显示该片段包括5′UTR 154个核苷酸和编码区606个核苷酸,编码N端202个氨基酸.Blast P结果表明,该片段编码的蛋白序列与辽宁碱篷及其他藜科植物的胆碱单加氧酶同源性达到85%以上.同时找出了其转录起始位点,即为该序列的第1个碱基g. 展开更多
关键词 RlM-RACE 盐角草 胆碱单加氧酶 cDNA 5′末端 转录起始位点
下载PDF
Leaf morpho-physiology and phytochemistry of olive trees as affected by cultivar type and increasing aridity 被引量:1
15
作者 Said TOUATI Jawaher AYADI +4 位作者 Abdelhakim BOUAJILA Smail ACILA Rami RAHMANI Jalloul BOUAJILA Mohamed DEBOUBA 《Journal of Arid Land》 SCIE CSCD 2022年第10期1159-1179,共21页
The olive species(Olea europaea L.)is an ancient traditional crop grown under rainfed conditions in the Mediterranean Basin.In response to the growing national and international demand for olive oil,the olive cultivar... The olive species(Olea europaea L.)is an ancient traditional crop grown under rainfed conditions in the Mediterranean Basin.In response to the growing national and international demand for olive oil,the olive cultivars are introduced into highly arid new bioclimatic areas.Subsequently,the morpho-physiology and phytochemistry of olive trees are potentially changing among cultivar types and geographical conditions.In the present work,we have undertaken an assessment on the impacts of geographical location and cultivar types on the leaf morpho-physiology and phytochemistry of olive trees.Thus,leaves of the two most cultivated olive tree varieties,Chemlal and Sigoise,were collected from three geographical regions(Setif,Batna,and Eloued)with increasing aridity in Algeria.Leaf samples from the geographical regions were analyzed using the standard physiological experiment,colorimetric method,and a chromatography assay.Leaves of both cultivars exhibited a significant variance in terms of the leaf shape index but not for the leaf tissue density,specific leaf weight,and specific leaf area.Photosynthetic pigment contents were affected by both cultivar type and geographical location,with the lowest pigment content recorded in the Sigoise cultivar from the Setif region.Compared with the Setif and Batna regions,dried leaves of both cultivars from the Eloued region showed the higher levels of the total polyphenol,total flavonoid,and total tannin,as well as a better antioxidant capacity.Liquid chromatography-mass spectrometry analysis of all leaf extracts identified the following phenolic acids as major compounds:oleuropein,naringin,apigenin-7-O-glucoside,kaempferol,quercetin,quercitrin,luteolin-7-O-naringenin,and quinic acid.Lower contents were found for p-Coumaric acid,trans-Ferulic acid,hyperoside,rutin,apigenin,caffeic acid,protocatechuic acid,o-Coumaric acid,and gallic acid.Also,epicatechin and catechin+were not found in the leaf extracts of the Sigoise cultivar.The leaf organic extracts in both cultivars displayed promising anti-cancer activity that was affected by geographical location and organic solvent polarity.Briefly,although increasing aridity and soil organic and mineral deficiency affected the leaf morpho-physiological parameters,both cultivars sustained a chemical richness,a good antioxidant,and an anti-tumoral capacity in leaves.Furthermore,the findings revealed that regardless the olive tree genotype,there was a significant impact of geographical location on the leaf morpho-physiology,bioactivity,and chemical composition,which may consequently modulate the growth and oil production of olive trees. 展开更多
关键词 Olea europaea l. ARIDITY leaf morpho-physiology bioactivity olive cultivar geographical location Algeria
下载PDF
Protein Bodies in Cotyledon Cells Exhibit Differential Patterns of Legumin-Like Proteins Mobilization during Seedling Germinating States
16
作者 Jose C. Jimenez-Lopez Maria C. Hernandez-Soriano 《American Journal of Plant Sciences》 2013年第12期2444-2454,共11页
Olive (Olea europaea L.) tree is one of the most extensive and important agricultural crop in Mediterranean countries due to its beneficial health and nutritional properties and its high economic value. Currently, oli... Olive (Olea europaea L.) tree is one of the most extensive and important agricultural crop in Mediterranean countries due to its beneficial health and nutritional properties and its high economic value. Currently, olive tree constitutes the sixth most important cultivated plant in the world, spreading from the Mediterranean region of origin to new production areas such as Australia, South and North America and South Africa. However, the mobilization processes of storage materials i.e. reserve proteins during seed germination, which are largely involved in essential physiological process including plant growth and development, remain poorly understood. Morphometric and immunohistochemistry analyses of protein bodies contained in olive seed storage tissues, cotyledon and endosperm, were performed by using different microscopy techniques, including light (bright-field and fluorescence) microscopy and transmission electron microscopy. Furthermore, we used legumin-like proteins (11S-type globulins) as a molecular marker to study the mobilization of reserve proteins from PBs of cotyledons at germinating seedling stages by using immunofluorescence assays. Results demonstrated that cotyledon and endosperm are characterized by distinct PBs populations containing legumin-like proteins, distinctly discriminated by the number of PBs per cell and tissue, size, immunofluorescence and histochemical staining. These features reflect differential PBs biogenesis during development and maturation processes in olive seed tissues endosperm and cotyledon, in relation to proteins (polypeptides) final composition, SSPs processing and/or packaging during seed maturation. Three different mobilization patterns of legumin-like proteins were identified for the first time in cotyledon PBs during seedling germinating process. Mature proteins composition and/or processing, cell types and enzyme composition and/or differential activation have been discussed as key features determining how proteins mobilize from PBs for further degradation in the cotyledon. 展开更多
关键词 11S GlOBUlINS COTYlEDON Endosperm In Vitro Germination legumin-like PROTEINS Olea europaea l. Protein Bodies Seed PROTEINS MOBIlIZATION
下载PDF
盐角草(Salicornia europaea)对NaCl处理的生理响应 被引量:9
17
作者 张梅茹 马金彪 +2 位作者 姚银安 张选 肖薪龙 《中国沙漠》 CSCD 北大核心 2014年第2期441-447,共7页
用含有NaCl的Hoagland培养液处理盐角草(Salicornia europaea)11d。检测其鲜重,干重,离子含量,电导率,溶解性总固体(TDS)含量,超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性及丙二醛(MDA)浓度。结果表明:随着NaCl浓度的增... 用含有NaCl的Hoagland培养液处理盐角草(Salicornia europaea)11d。检测其鲜重,干重,离子含量,电导率,溶解性总固体(TDS)含量,超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性及丙二醛(MDA)浓度。结果表明:随着NaCl浓度的增加,盐角草干重和鲜重呈现先上升后下降的趋势,相对电导率、TDS、SOD、POD、CAT及MDA均呈现先下降后上升的趋势,在NaCl溶液浓度为200mmol·L-1左右时,干重和鲜重的值达到最大,电导率、TDS、SOD、POD、CAT、MDA含量达到最小值;500mmol·L-1和800mmol·L-1时,SOD和CAT活性下降,电导率、TDS、POD、MDA含量则急剧上升。由此说明,一定浓度的NaCl溶液促进了盐角草的生长,200mmol·L-1左右是其生长的最适浓度,500mmol·L-1和800mmol·L-1高盐浓度会对盐角草的膜结构、酶系统等造成不同程度的损伤。盐角草主要将Na+、K+积累在地上部,且随着NaCl处理浓度的增大,Na+含量逐渐增加、K+含量逐渐降低,这可能是盐角草调节细胞内离子平衡对抗盐胁迫的一种适应策略。 展开更多
关键词 盐角草(salicornia europaea) NACl 最适浓度 离子平衡
原文传递
土壤氮、盐浓度对盐角草(Salicornia europaea)生长发育及氮素吸收的影响 被引量:3
18
作者 尹海龙 田长彦 +2 位作者 任婧 陈春秀 黄建 《中国沙漠》 CSCD 北大核心 2014年第5期1277-1284,共8页
以盐生植物盐角草(Salicornia europaea)为材料,以NaCl模拟不同盐度环境,盆栽试验了氮(0.3g·kg-1,N1;0.6g·kg-1,N2;1.2g·kg-1,N3;2.4g·kg-1,N4)、盐(2.5g·kg-1,S1;5.0g·kg-1,S2;7.5g·kg-1,S3)处理... 以盐生植物盐角草(Salicornia europaea)为材料,以NaCl模拟不同盐度环境,盆栽试验了氮(0.3g·kg-1,N1;0.6g·kg-1,N2;1.2g·kg-1,N3;2.4g·kg-1,N4)、盐(2.5g·kg-1,S1;5.0g·kg-1,S2;7.5g·kg-1,S3)处理对其生长发育及氮素吸收利用的影响。结果表明:(1)不同盐度下施氮均可以显著促进盐角草的生长,地上部干质量均在N2处理下达到最大,而株高均在N1时达到最高,且施氮对盐角草生长的影响与盐度有关;(2)不同盐度环境下施氮所能达到的最高干物质产量及最高施氮限量不同,表现为S3<S1<S2,随着施氮量的增加,氮素生产力与氮素农学利用效率均表现出下降的趋势;(3)施氮显著增加了盐角草各器官含氮量及氮吸收量,同一施氮水平下盐角草各器官含氮量及氮吸收量均表现为同化枝>茎>根;(4)同一施氮水平下,随着盐度的增加,盐角草同化枝渗透势显著下降,同一盐度环境下,随着施氮量的增加,同化枝渗透势呈现出下降趋势,渗透调节能力增大;(5)3个盐度环境下,施氮均增加盐角草同化枝光合色素含量,从而提高光合效率,增强其对盐渍环境的适应能力。 展开更多
关键词 盐角草(salicornia europaea) 生长发育 渗透势
原文传递
Effect of Regulated Deficit Irrigation on Productivity,Quality and Water Use in Olive cv“Manzanilla”
19
作者 Raúl Leonel Grijalva-Contreras Rubén Macías-Duarte +3 位作者 Gerardo Martínez-Díaz Fabián Robles-Contreras Manuel de Jesús Valenzuela-Ruiz Fidel Nunez-Ramírez 《American Journal of Plant Sciences》 2013年第12期109-113,共5页
The objective of this experiment was to determine the effect of different regulated deficit irrigation (RDI) strategies on productivity, oil quality and water-use efficiency on olive grown in the Sonoran Desert. The e... The objective of this experiment was to determine the effect of different regulated deficit irrigation (RDI) strategies on productivity, oil quality and water-use efficiency on olive grown in the Sonoran Desert. The experiments were carried out in 2009 and 2010, and in a ten years old traditional (10 × 5 m) “Manzanilla” olive orchard. The control treatment was irrigated at 100% ETc during the whole season while RDI treatments were applied at 75% ETc or 50% ETc. The two RDI were applied during two phenological stages: at postharvest to evaluate the effect on table olive or from pit hardening to harvest to evaluate the effect on oil olive. Our results indicated that RDI applying 50% ETc during postharvest period reduced significantly fruit set and table olive yield, while applied during pit hardening to harvest period, it decreased oil yield but increased oil content. The RDI applying an ETc of 75% during the postharvest period gave similar table olive yield to the control, and applied form of pit hardening to harvest also gave similar oil yield to the control. The RDI using an ETc of 75% resulted in the highest water-use efficiency for oil or table olive production. 展开更多
关键词 Olea europaea l. Water Stress Yield and Quality Water Save
下载PDF
油橄榄雌性繁殖成功的花粉和资源限制
20
作者 罗长维 陈桂芳 +2 位作者 闫明旭 朱恒星 陈友 《云南大学学报(自然科学版)》 CAS CSCD 北大核心 2023年第6期1321-1330,共10页
雄全同株植物油橄榄(Olea europaea L.)鲜果肉为优质食用油原料,但存在结果率低下的问题.研究对油橄榄的开花特性进行观察,运用人工授粉、补施肥料、不同比例剪叶处理以及不同比例疏花处理研究了油橄榄花粉和资源限制对雌性繁殖成功的影... 雄全同株植物油橄榄(Olea europaea L.)鲜果肉为优质食用油原料,但存在结果率低下的问题.研究对油橄榄的开花特性进行观察,运用人工授粉、补施肥料、不同比例剪叶处理以及不同比例疏花处理研究了油橄榄花粉和资源限制对雌性繁殖成功的影响,并进一步探讨了该植物的“花多果少”的繁殖机制.结果表明:油橄榄单花序花期3~4 d,表现为完全花先熟,雄花后熟,有支持异交降低自交的倾向.油橄榄单株花期4~5 d,群体盛花期6~9 d,呈“集中开花模式”,花朵具芳香,能吸引多种昆虫前来访花,易造成自花授粉.异交人工授粉、风媒授粉与自然授粉3个处理间的结果率及单果重量没有显著差异,表明花粉来源与数量对油橄榄雌性繁殖成功没有影响.油橄榄雌性繁殖成功存在资源限制:补充施肥显著提高了植株的单生殖枝花序数、单花序完全花数、结果率与单果干重.随着剪除叶片比例增加,结果率显著下降,单果干重也显著降低,其中剪除叶片1/4的结果率与单果干重有所下降,但与对照差异不显著,而剪除叶片2/4、剪除叶片3/4及剪除全部叶片的结果率与单果干重均显著低于对照.随着疏花比例增加,初始花的结果率呈下降趋势,保留花的结果率则先降后升;单果干重则疏花1/4处理时增加,随着疏花比例继续增加,单果干重与对照差异不大.整体看来,油橄榄结果率极低,不同因子对其低水平坐果率可能产生相互作用.雄性功能假说和资源限制假说似乎是油橄榄“花多果少”繁殖策略的合理解释. 展开更多
关键词 油橄榄 花粉限制 资源限制 补充授粉 补充施肥 繁殖策略
下载PDF
上一页 1 2 8 下一页 到第
使用帮助 返回顶部