期刊论文

Effects of Low Temperature Stress on the Antioxidant Enzyme Activities and Fatty Acid Contents in Zoysiagrass

中文

草地学报

1007-0435

2019

27

4

906-912

10.11733/j.issn.1007-0435.2019.04.015

湖南省教育厅项目(18C1105) 湖南省自然科学基金青年基金(2018JJ3223) 长沙市科技计划(KC1809004)资助。

本校为其他机构

为探讨不同纬度来源结缕草(Zoysia Willd)对低温的响应,本研究以两份结缕草种质LT-40(高纬度)和LT-22(低纬度)为材料,分析了适温(30℃/25℃)、亚适温(18℃/12℃)、冷害(8℃/2℃)和冻害(2℃/-4℃)4种温度对叶片电导率(Electrolyte leakage,EL)、叶绿素和丙二醛(M alondialdehyde,MDA)含量、抗氧化酶活性、叶片脂肪酸含量及不饱和指数的影响.结果 表明,随着温度的降低,EL增大,叶片中叶绿素含量降低、MDA含量升高,且在LT-22中变化更大;叶片超氧化物歧化酶、过氧化物酶、过氧化氢酶活性均随着温度的下降而逐渐升高,且在LT-40中表现更为显著;低温下叶片中棕榈酸含量呈下降趋势,而硬脂酸含量只在LT-40...

In order to investigate the effect of low temperature stress on the leaf electrolyte leakage(EL), chlorophyll content,malondialdehyde(MDA)content,antioxidant enzyme activity(SOD,POD,CAT),fatty acid content and index of unsaturated fatty acid,two genotypes of zoysiagrass originated from different latitudes,LT-40(from high latitude)and LT-22(from low latitude)were selected and treated under a range of temperatures:optimum (30℃/25℃),suboptimum (18℃/12℃),chilling(8℃/2℃)and freezing (2℃/-4℃)under environment-controlled growth chambers.The re...