文献类型：期刊文献

中文题名：亚精胺对盐胁迫下黄华占水稻幼苗根系抗氧化酶活性及Na^(+)稳态的影响

英文题名：Effects of Spermidine on Antioxidant Enzyme Activity and Na^(+) Homeostasis of Seedlings Roots of Huanghuazhan Rice under Salt Stress

作者：黄婷婷[1,2];郑殿峰[1,2];冯乃杰[1,2];赵黎明[1,2];周鸿凯[1,2];沈雪峰[1,2]

机构：[1]广东海洋大学滨海农业学院,广东湛江524088;[2]国家耐盐碱水稻技术创新中心华南中心,广东湛江524088

年份：2023

卷号：29

期号：2

起止页码：43

中文期刊名：中国稻米

外文期刊名：China Rice

收录：CSTPCD、、北大核心、北大核心2020

基金：广东海洋大学国家级创新创业训练计划项目(CXXL2020013);广东海洋大学科研启动费资助项目(R20062);广东省重点领域研发计划项目(2020B020219004)。

语种：中文

中文关键词：水稻;外源Spd;盐胁迫;抗氧化防御;Na^(+)

外文关键词：rice;exogenous spermidine;salt stress;antioxidant defense;Na^(+)

中文摘要：以黄华占种子为材料,研究盐胁迫条件下,外源亚精胺(Spd)对水稻幼苗根系的生长、抗氧化酶活性、活性氧(ROS)代谢、丙二醛(MDA)以及Na^(+)稳态的影响。结果表明,经100 mmol/L NaCl溶液处理水稻幼苗根系的ROS、·O_(2)^(-)、H_(2)O_(2)、Na^(+)和MDA含量显著升高,过氧化物酶(POD)和过氧化氢酶(CAT)活性显著降低;在盐胁迫条件下,施用0.1 mmol/L Spd显著提高水稻幼苗根系的CAT和POD活性,显著降低ROS、·O_(2)^(-)、H_(2)O_(2)、Na^(+)和MDA含量,从而减轻Na^(+)毒害和过氧化造成的膜损伤,保护生物膜系统的稳定,维持细胞的稳态。

外文摘要：The effects of exogenous spermidine (Spd) on rice seedling growth,antioxidant enzyme activity,reactive oxygen species(ROS)metabolism,malonic dialdehyde (MDA)and Na^(+)homeostasis were studied with rice variety Huanghuazhan as the material.The results showed that the content of ROS、·O_(2)^(-)、H_(2)O_(2)、Na^(+)and MDA were significantly increased in the root of rice seedlings by treated with 100 mmol·L-1NaCl,meanwhile,the activities of catalase(CAT)and peroxidase(POD)were remarkably reduced.However,the activities of CAT and POD were significantly enhanced by using 0.1 mmol·L-1Spd,and the content of ROS、·O_(2)^(-)、H_(2)O_(2)、Na^(+)and MDA were remarkably decreased.So,the damage of Na^(+)toxicity and membrane oxidation were alleviated,the stability of biofilm system was protected,and the steady state of cells was maintained with Spd under salt stress condition.