我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|本期目录/Table of Contents|

SNP和cPTIO对NaCl胁迫下拟南芥的生理影响

《广西植物》[ISSN:1000-3142/CN:45-1134/Q]

期数:
2010年05期
页码:
666-671
栏目:
植物生理学与分子生物学
出版日期:
2010-09-15

文章信息/Info

Title:
Effects of SNP and cPTIO on physiology of Arabidopsis seedling under NaCl stress
作者:
吴 嘉1 杨红玉1* 杨明挚2 李 湘3 夏绍嫘3
1.昆明学院 生命科学与技术系, 昆明 650214; 2.云南大学 生命科学学院, 昆明 650091; 3.云南师范大学 生命科学学院, 昆明 650092
Author(s):
WU Jia1 YANG HongYu1* YANG MingZhi2 LI Xiang3 XIA ShaoLei3
1.College of Life Sciences and Technology, Kunming University, Kunming 650214, China; 2.College of Life Sciences, Yunnan University, Kunming 650091, China; 3.School of Life Sciences, Yunnan Normal University, Kunming 650092, China
关键词:
一氧化氮 cPTIO 盐胁迫 拟南芥
Keywords:
nitric oxide(NO) cPTIO NaCl stress Arabidopsis thaliana
分类号:
-
DOI:
-
文献标识码:
-
摘要:
以拟南芥为材料,研究了0.5 mmol/L的外源一氧化氮供体硝普纳(SNP)和200 mmol/L的一氧化氮专一清除剂(cPTIO)对200 mmol/L NaCl胁迫下对拟南芥的生理影响。0.5 mmol/L SNP和200 mmol/L cPTIO预处理2 h后,加入200 mmol/L NaCl。不同处理的拟南芥加入200 mmol/L NaCl后,每隔12 h取样一次,观察叶片生长情况、测定过氧化物酶(POD)、超氧化物歧化酶(SOD)、丙二醛(MDA)和超氧阴离子(O2)的变化。结果表明0.5 mmol/L的SNP能缓解200 mmol/L NaCl胁迫伤害,促进盐胁迫下幼苗的生长,显著提高抗氧化酶系统中POD和SOD活性,显著降低MDA和O2的含量,从而提高植株的抗盐性,而NO专一清除剂cPTIO能逆转SNP的上述效应。
Abstract:
Three groups of 8weekold Arabidopsis seedlings were cultured,they were respectively pretreated with water,0.5 mmol/L SNP and 200 mmol/L cPTIO for 2 h,after that,200 mmol/L NaCl was added. Fresh NaCl solution was applied every day and some physiological indices such as peroxidase(POD),superoxide dismutase(SOD),malondialdehyde(MDA)and superoxide anion(O2)were determined 12 h later. The results showed that SNP could relieve NaCl stress injuries,and promote the growth of seedlings under salt stress,significantly improve the antioxidant enzyme system,POD and SOD activity,significantly reduce MDA and O2 content,thereby enhancing the salt tolerance of plants,while the NO specific scavenger cPTIO could reverse the above effects of SNP.

参考文献/References

-

备注/Memo

备注/Memo:
-
更新日期/Last Update: 2010-09-01