NaHCO_(3)胁迫下对青稞幼苗抗氧化酶活性的影响  

Effect of antioxidant enzyme activities of hulless barley seedlings treated with NaHCO_(3) stress

作　　者：乔枫[1,2,3] 段国苹 许小宁 耿贵工 谢惠春[1,2,3] QIAO Feng;DUAN Guo-ping;XU Xiao-ning;GENG Gui-gong;XIE Hui-chun(Research Institute of plateau science and sustainable development,Qinghai Normal University,Xining 810008,China;Qinghai Key Laboratory of medicinal animal and plant resources on the Qinghai Tibet Plateau,Xining 810008,China;Key Laboratory of biodiversity formation mechanism and comprehensive utilization in Qinghai Tibet Plateau,Xining 810008,China;Qinghai Agricultural Project Gyidance Service Center,Xining 810008,China;Qinghai Academy of Agricultural and Forestry Sciences,Qinghai University,Xining 810016,China)

机构地区：[1]高原科学与可持续发展研究院,青海师范大学,青海西宁810008 [2]青海省青藏高原药用动植物资源重点实验室,青海西宁810008 [3]青海省青藏高原生物多样性形成机制与综合利用重点实验室,青海西宁810008 [4]青海省农业项目指导服务中心,青海西宁810008 [5]青海省农林科学院,青海西宁810016

出　　处：《青海师范大学学报（自然科学版）》2022年第1期51-56,共6页Journal of Qinghai Normal University(Natural Science Edition)

基　　金：青海师范大学校级中青年科研项目;青海省科技厅科技成果转化专项项目(2020-NK-125);中国科学院2018年度“西部之光”人才培养项目(人字[2018]99号)

摘　　要：以青稞幼苗为材料,利用不同浓度的碳酸氢钠(NaHCO_(3))溶液处理幼苗7d,研究青稞幼苗叶与根中抗氧化酶活性的变化.结果显示随着NaHCO_(3)胁迫浓度的增加,在幼苗叶中SOD活性先降后升,在根中先升后降;在叶与根中,POD活性逐渐增加,APX活性逐渐下降;在叶中CAT活性先升后降,在根中CAT活性下降;叶与根中可溶性蛋白含量增加.虽然NaHCO_(3)胁迫下青稞幼苗叶与根中抗氧化酶活性变化不同,但能共同协调维持植物细胞内的生理代谢,抵抗不良环境.In this paper,hulless barley seedlings were treated with different concentrations of sodium bicarbonate NaHCO_(3)solution for 7 days to study the changes of antioxidant enzyme activities in leaves and roots of seedlings.The results showed that with the increase of NaHCO_(3)stress concentration,SOD activity first decreased and then increased in leaves and first increased and then decreased in roots.In leaves and roots,POD activity increased and APX activity decreased.CAT activity first increased and then decreased in leaves and decreased in roots.The content of soluble protein in leaves and roots increased.Under NaHCO_(3)stress,the changes of antioxidant enzyme activities in leaves and roots of hulless barley seedlings arewere different,which were coordinated to maintain physiological metabolism in plant cells and resist adverse environment.

关 键 词：青稞 幼苗 NaHCO_(3)胁迫 抗氧化酶 

分 类 号：S512.3[农业科学—作物学]