The response of enzyme and non-enzymatic antioxidants of Mn hyperaccumuator, Polygonum hydropiper (P. hydropiper), to Mn stress was studied using hydroponics culture experiments to explore the mechanism of Mn tolera...The response of enzyme and non-enzymatic antioxidants of Mn hyperaccumuator, Polygonum hydropiper (P. hydropiper), to Mn stress was studied using hydroponics culture experiments to explore the mechanism of Mn tolerance in this species. Results showed that both chlorophyll and carotenoid contents significantly (p〈0.05) decreased with increasing Mn treatment levels (0, 0.5, 1, 2, 4, and 8 mg/L) in hydroponics. The concentrations of malondialdehyde (MDA) and hydrogen peroxide (H202) in the root and shoot of P hydropiper were accumulated under Mn stress. Meanwhile, the anti-oxidative functions of several important enzymes, including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POD) in plants were stimulated by Mn spike in leaves and roots, especially at low Mn stress; while sulfhydryl group (--SH) and glutathion (GSH) were likely involved in Mn detoxification ofP. hydropiper under high Mn stress.展开更多
辣蓼(Polygonum hydropiper L. )中的天然产物蓼二醛((一)-Polygodial)具有很好的昆虫拒食活性。本文介绍了提取、分离的方法和含量测定。结果表明,我国辣蓼叶中含有蓼二醛约为0.08%。合成的蓼二醛在室内对空气、光和热的半衰期分别为3...辣蓼(Polygonum hydropiper L. )中的天然产物蓼二醛((一)-Polygodial)具有很好的昆虫拒食活性。本文介绍了提取、分离的方法和含量测定。结果表明,我国辣蓼叶中含有蓼二醛约为0.08%。合成的蓼二醛在室内对空气、光和热的半衰期分别为34.6天、33.8天和15.6天。室内外生测结果表明,天然蓼二醛的乙醚提取物对蚜虫有很好的拒食活性。展开更多
基金Project(41161057)supported by the National Natural Science Foundation of ChinaProject(Guikezhuan 14122008-2)supported by Guangxi Provincial Science and Technology Development,China+2 种基金Project(2014GXNSFAA118303)supported by the Natural Science Foundation of Guangxi Province,ChinaProjects(YRHJ15K002,YRHJ15Z026)supported by Key Laboratory of Karst Ecology and Environment Change of Guangxi Normal University,ChinaProject(2016JJ6135)supported by the Natural Science Foundation of Hunan Province,China
文摘The response of enzyme and non-enzymatic antioxidants of Mn hyperaccumuator, Polygonum hydropiper (P. hydropiper), to Mn stress was studied using hydroponics culture experiments to explore the mechanism of Mn tolerance in this species. Results showed that both chlorophyll and carotenoid contents significantly (p〈0.05) decreased with increasing Mn treatment levels (0, 0.5, 1, 2, 4, and 8 mg/L) in hydroponics. The concentrations of malondialdehyde (MDA) and hydrogen peroxide (H202) in the root and shoot of P hydropiper were accumulated under Mn stress. Meanwhile, the anti-oxidative functions of several important enzymes, including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POD) in plants were stimulated by Mn spike in leaves and roots, especially at low Mn stress; while sulfhydryl group (--SH) and glutathion (GSH) were likely involved in Mn detoxification ofP. hydropiper under high Mn stress.
文摘辣蓼(Polygonum hydropiper L. )中的天然产物蓼二醛((一)-Polygodial)具有很好的昆虫拒食活性。本文介绍了提取、分离的方法和含量测定。结果表明,我国辣蓼叶中含有蓼二醛约为0.08%。合成的蓼二醛在室内对空气、光和热的半衰期分别为34.6天、33.8天和15.6天。室内外生测结果表明,天然蓼二醛的乙醚提取物对蚜虫有很好的拒食活性。