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氮磷钾肥对烟草根结线虫病抗性研究 被引量:11
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作者 贾利华 文国松 +1 位作者 李永忠 徐兴阳 《现代农业科学》 2009年第3期62-65,共4页
通过对氮、磷、钾肥对烟草根结线虫病抗性研究表明,烟株的氮肥营养对该病有很好的抑制效果,充足的氮肥能明显推迟初始发病时间和降低整个生育期的病情。磷、钾肥营养对该病有一定的抑制效果,对推迟初始发病时间效果不明显,但可以适当减... 通过对氮、磷、钾肥对烟草根结线虫病抗性研究表明,烟株的氮肥营养对该病有很好的抑制效果,充足的氮肥能明显推迟初始发病时间和降低整个生育期的病情。磷、钾肥营养对该病有一定的抑制效果,对推迟初始发病时间效果不明显,但可以适当减轻整个生育期的病情;田间进一步增施或减少磷、钾肥用量,对抑制该病的效果影响不明显。 展开更多
关键词 烟草 根结线虫病 营养抗性
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水稻抗稻瘿蚊的离子组研究
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作者 蒋哲 范晓苏 +5 位作者 曹振宇 周桂花 陈英之 莫怿 覃宝祥 邱永福 《南方农业学报》 CAS CSCD 北大核心 2023年第2期424-433,共10页
【目的】探索水稻中不同营养元素响应稻瘿蚊取食的差异,为稻瘿蚊防治及水稻抗稻瘿蚊机理阐释提供新思路。【方法】以稻瘿蚊抗性近等基因系43W-NIL和感性品系9311为材料,利用电感耦合等离子体质谱(ICP-MS)测定抗感水稻材料在接种稻瘿蚊后... 【目的】探索水稻中不同营养元素响应稻瘿蚊取食的差异,为稻瘿蚊防治及水稻抗稻瘿蚊机理阐释提供新思路。【方法】以稻瘿蚊抗性近等基因系43W-NIL和感性品系9311为材料,利用电感耦合等离子体质谱(ICP-MS)测定抗感水稻材料在接种稻瘿蚊后第0、5、7和9 d时植株体内的营养元素含量;利用水培法验证关键元素受稻瘿蚊取食诱导的变化;通过qRT-PCR测定与营养元素代谢相关基因在抗感材料中的表达量。【结果】离子组分析共鉴定25种营养元素,大部分元素在抗感材料及稻瘿蚊取食前后差异明显。接种稻瘿蚊后,与9311的第0 d相比,43W-NIL中Ti、K、P和S元素含量较高,而Pb、Sr和Ca元素含量较低。离子组的主成分分析发现,PC1和PC2分量分别解释40.0%和24.7%的变异。主成分载荷分析结果表明,Ca、Sr、Co、Pb、Be、Sb、Fe、Ti、P、S和K的含量变化可以区分抗性和感性材料,且影响稻瘿蚊抗性最重要的5种元素依次为Ca、Sr、P、K、Co。水培植株的接虫试验发现,高浓度的外源Ca处理可促进稻瘿蚊幼虫在抗性水稻中生长,而低浓度P、K处理会抑制稻瘿蚊幼虫在感性材料中生长。qRT-PCR结果显示,钙调蛋白基因(OsCML20)表达量与Ca2+含量的变化趋势相同;钾转运蛋白基因(OsHAK12)的表达量在抗感材料中均表现为先下降后上升。【结论】Ca、P和K等3种元素可能在水稻响应稻瘿蚊取食中发挥关键作用。OsHAK12和OsCML20基因可能是稻瘿蚊抗性表达机制中的重要基因。离子组学可从元素、营养的角度发现水稻在被稻瘿蚊取食时的差异,为植物抗虫机理研究提供新思路。 展开更多
关键词 水稻 稻瘿蚊 离子组 营养抗性 基因表达
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维生素E对实验性迟发性运动障碍的防治作用及可能机制 被引量:7
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作者 张冰洁 李艳丽 +7 位作者 王志仁 李佳 王月婵 张向阳 杨甫德 周东丰 张秀军 谭云龙 《中国神经精神疾病杂志》 CAS CSCD 北大核心 2016年第6期347-351,共5页
目的分析维生素E(vitamin E,Vit E)对迟发性运动障碍(tardive dyskinesia,TD)大鼠模型口周异常不自主运动(vacuous chewing movements,VCM)、血清脑源性营养因子(brain derived neurotrophic factor,BDNF)和总抗氧化能力(total antioxid... 目的分析维生素E(vitamin E,Vit E)对迟发性运动障碍(tardive dyskinesia,TD)大鼠模型口周异常不自主运动(vacuous chewing movements,VCM)、血清脑源性营养因子(brain derived neurotrophic factor,BDNF)和总抗氧化能力(total antioxidant capacity,TAC)水平的影响,探索TD可能的防治机制。方法将32只雄性大鼠随机分为TD组[腹腔注射氟哌啶醇(haloperidol,Hal)2 mg/kg+第5周始灌胃5 m L/kg生理盐水(normal saline,NS)]、Vit E预防组(P-Vit E组,腹腔注射Hal 2 mg/kg+灌胃5 m L/kg Vit E溶液)、Vit E治疗组(T-Vit E组,腹腔注射Hal2 mg/kg+第5周始灌胃5 m L/kg Vit E溶液)、对照组(腹腔注射NS 2 m L/kg+第5周始灌胃5 m L/kg NS),每组8只,共观察10周,每周第7天进行VCM评分。第10周末,分别采用酶联免疫吸附法、分光光度法检测大鼠血清BDNF、TAC水平。结果第2周末TD组和T-Vit E组VCM评分较干预前VCM评分增加(P<0.05),并在第5周末达峰值;第6周后T-Vit E组VCM评分逐步下降;第10周末T-Vit E组VCM评分(6.5±3.3)与TD组(27.9±5.8)差异有统计学意义(P<0.01),与对照组(3.5±1.9)无统计学差异(P>0.05)。P-Vit E组与对照组在10个评估点上VCM评分差异均无统计学意义(P>0.05)。第10周末,TD组血清BDNF[(6.9±1.0)pg/m L]、TAC[(11.9±3.2)U/m L]水平低于对照组[BDNF(8.6±2.5)pg/m L,TAC(18.2±5.5)U/m L]和T-Vit E组[BDNF(8.7±2.0)pg/m L,TAC(18.6±5.9)U/m L](均P<0.01),与P-Vit E组差异无统计学意义(P>0.05)。结论Vit E可能通过缓解自由基损伤而对TD模型大鼠VCM症状具有防治作用。 展开更多
关键词 迟发运动障碍 物质诱发 维生素E 脑源营养因子氧化
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2000年烟草病毒病大发生概况与原因分析 被引量:37
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作者 李淑君 王海涛 +2 位作者 陈玉国 黄元炯 范艺宽 《烟草科技》 EI CAS 2001年第1期44-46,共3页
介绍了 2 0 0 0年河南省烟草病毒病流行的概况和新特点 ,分析了病毒病大发生的原因。苗期持续干旱、高温天气及 5月异常冷气流是 2 0 0 0年病毒病大发生的最大诱因 ,烟蚜提前迁飞、蚜虫防治不彻底、烟田有机质含量逐年下降、防病栽培措... 介绍了 2 0 0 0年河南省烟草病毒病流行的概况和新特点 ,分析了病毒病大发生的原因。苗期持续干旱、高温天气及 5月异常冷气流是 2 0 0 0年病毒病大发生的最大诱因 ,烟蚜提前迁飞、蚜虫防治不彻底、烟田有机质含量逐年下降、防病栽培措施未采纳。 展开更多
关键词 烟草 病毒病 烟蚜 营养抗性 防病栽培 2000年 河南
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Nutritional Analysis and Physiological Activity Evaluation of Pneumatophorus japonicus Sauce 被引量:1
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作者 JIANG Jin-jin JIA Qiang +2 位作者 LIN Wan-ling LIANG Lan-lan LAI Zi-jian 《Agricultural Science & Technology》 CAS 2019年第1期49-54,共6页
The nutritional composition of Pneumatophorus japonicus sauce was analyzed and compared with other fish sauces. The sodium chloride content of the sample Pneumatophorus japonicus sauce was greater than 25%. The total ... The nutritional composition of Pneumatophorus japonicus sauce was analyzed and compared with other fish sauces. The sodium chloride content of the sample Pneumatophorus japonicus sauce was greater than 25%. The total soluble nitrogen content was greater than 2.1 g/100mL, and the amino nitrogen content was greater than 1.2 g/100mL. The mineral content was abundant in the Pneumatophorus japonicus sauce, the calcium content and the magnesium content were 391.50±0.03 and 375.00±0.02 mg/L respectively, much higher than those in other samples. The iron content and the zinc content were 22.30±0.04 and 2.80±0.03 mg/L, respectively. The content of free amino acids was 5 552.17 mg/100mL, the content of essential amino acids was 2 666.00 mg/100mL,The taurine content was 113.05 mg/100mL. The antioxidant activity of the fermentation broth was 90.48%, while the TCA soluble peptide content was 29.04 mg/mL. Pneumatophorus japonicus sauce is nutritionally rich and has special physiological activity. 展开更多
关键词 Pneumatophorus japonicus sauce Nutritional composition TAURINE Antioxidant activity
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Why bortezomib cannot go with ‘green'? 被引量:1
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作者 Li Jia Feng-Ting Liu 《Cancer Biology & Medicine》 SCIE CAS CSCD 2013年第4期206-213,共8页
Eat more‘green’or eat‘five a day’is one of the most important healthy lifestyle behaviours in the 21 century.Aiming to fight cancer effectively,more than half patients use vitamins or herbs concurrently with conve... Eat more‘green’or eat‘five a day’is one of the most important healthy lifestyle behaviours in the 21 century.Aiming to fight cancer effectively,more than half patients use vitamins or herbs concurrently with conventional anticancer treatment.Flavonoids or polyphenols existing in vegetables,fruits and green tea are common plant pigments with antioxidant properties and considered acting as cancer preventing or anti-cancer agents.Recently it was found that some flavonoids and vitamin C in diet or supplements have antagonistic effect with the anti-cancer drug bortezomib.Bortezomib is a specific inhibitor for proteasome and is currently used for treatment of relapsed and refractory multiple myeloma.Despite its successful rates in treating multiple myeloma and other solid tumors,it is unable to kill leukemic cells in the blood.It was recently revealed that some flavonoids and vitamin C present in green leaves and green teas in the blood can neutralize bortezomib by directly interaction between two chemicals.Here we summarize why dietary flavonoids should be avoided in patients who take bortezomib as chemotherapeutic drug. 展开更多
关键词 BORTEZOMIB FLAVONOIDS POLYPHENOLS MYELOMA
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Dietary Fiber, Phytonutrients and Antioxidant Activity of Common Fruit Peels as Potential Functional Food Ingredientw
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作者 Priscilla Alice L. Samonte Trinidad P. Trinidad 《Journal of Chemistry and Chemical Engineering》 2013年第1期70-75,共6页
Mangiferaindica L. (carabao mango), AnnonaMuricata L. (soursop), Citrofortunellamicrocarpa(calamansi), and Musa acuminate x balbisianaColla (ABB Group) (plantain banana) have long been used in the processed ... Mangiferaindica L. (carabao mango), AnnonaMuricata L. (soursop), Citrofortunellamicrocarpa(calamansi), and Musa acuminate x balbisianaColla (ABB Group) (plantain banana) have long been used in the processed food industries. However, the peelsof these fruits are normally disposed as waste or at most used as fertilizer and feeds. The objective of the study is to characterize the peels of these fruits as functional food/ingredient. Freeze-dried fruits peels of carabao mango, soursop, calamansi and plantain banana were analyzed for proximate composition, dietary fiber and phytonutrients contents, fermentability invitro and antioxidant activity. Results showed soursop peels having significantly higher soluble (12.75 g/100 g sample) and insoluble (62.55 g/100 g sample) dietary fiber among the fruit peels studied. All peels produced significant amounts of short chain fatty acids, propionate 〉 acetate 〉 butyrate. Carabao mango peels produced the highest amount of acetate while calamansipeels, the highest propionate (215.8± 3.6 mg/100 g). Carabao mango and soursop peels have significantly greater total polyphenols, flavonoids, anthocyanidins andantioxidant activity. The study showed that fruit peels of carabao mango, soursop, calamansi and plantain banana can be potential functional food ingredients. 展开更多
关键词 MANGO soursop calamansi PLANTAIN peels functional foods
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