...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ukrainian Biochemical Journal >Action of methyl jasmonate and salt stress on antioxidant system of Arabidopsis plants defective in jasmonate signaling genes
【24h】

Action of methyl jasmonate and salt stress on antioxidant system of Arabidopsis plants defective in jasmonate signaling genes

机译：茉莉酸甲酯和盐胁迫对茉莉酮酸信号基因缺陷的拟南芥植物抗氧化系统的作用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Role of jasmonate signaling in the regulation of stress-protective systems in Arabidopsis under salt stress remains insufficiently studied. For its clarification, comparative studies with mutants lacking various protein components of jasmonate signaling are advisable. In this connection, effects of methyl jasmonate (MJ, 50 μM) and salt stress (NaCl, 150 mM) on functioning of antioxidant and osmoprotective systems of wild-type Arabidopsis plants (Col-0) and ones defective in jasmonate signaling, namely coi1 (mutant for gene coding the protein COI1, which participates in removal of repressor proteins of transcription factors of jasmonate signaling) and jin1 (mutant defective in gene encoding the transcription factor JIN1/MYC2, one of the key in jasmonate signaling), were investigated. Salt stress inhibited growth of plants of all three genotypes. Treatment with MJ before salt stress positively influenced only the growth of wild-type plants. In contrast to mutants coi1 and jin1 , Col-0 plants treated with MJ, under conditions of salt stress, kept close to the control values of water and total chlorophylls content, and the content of carotenoids increased. The coi1 plants under normal conditions differed from wild-type plants and jin1 mutants by reduced activity of guaiacol peroxidase and catalase and increased proline content. Treatment with MJ did not affect the activity of antioxidant enzymes and proline content in both mutants defective in jasmonate signaling. Under salt stress, the activity of superoxide dismutase, catalase and guaiacol peroxidase, as well as the content of proline and anthocyanins, in wild-type plants treated with MJ, were significantly higher than in control plants. The role of jasmonate-dependent protective systems in resistance of Arabidopsis plants to salt stress is discussed.
机译：茉莉酸信号在盐胁迫下拟南芥中应力保护系统调控中的作用仍未得到充分研究。为澄清起见，建议对缺少茉莉酸酯信号传导的各种蛋白质成分的突变体进行比较研究。就此而言，茉莉酸甲酯（MJ，50μM）和盐胁迫（NaCl，150 mM）对野生型拟南芥植物（Col-0）和茉莉酸信号传导缺陷的抗氧化和渗透保护系统的功能的影响，即coi1分别研究了参与编码茉莉酸信号转导的阻遏蛋白的蛋白COI1的突变体和jin1（茉莉酸信号转导的关键之一，编码转录因子JIN1 / MYC2的基因的突变体）。盐胁迫抑制了所有三种基因型的植物的生长。在盐胁迫之前用MJ处理仅积极影响野生型植物的生长。与突变体coi1和jin1不同，用MJ处理的Col-0植物在盐胁迫下保持接近水和总叶绿素含量的对照值，并且类胡萝卜素的含量增加。正常条件下的coi1植物与野生型植物和jin1突变体的区别在于愈创木酚过氧化物酶和过氧化氢酶的活性降低，脯氨酸含量增加。用茉莉酸处理并没有影响茉莉酸酯信号转导的两个突变体中抗氧化酶的活性和脯氨酸含量。在盐胁迫下，MJ处理的野生型植物中的超氧化物歧化酶，过氧化氢酶和愈创木酚过氧化物酶的活性以及脯氨酸和花色苷的含量均显着高于对照植物。讨论了茉莉酸依赖性保护系统在拟南芥植物对盐胁迫的抗性中的作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号