...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Plant Physiology >Possible contribution of cell-wall-bound ferulic acid in drought resistance and recovery in triticale seedlings
【24h】

Possible contribution of cell-wall-bound ferulic acid in drought resistance and recovery in triticale seedlings

机译：小黑麦幼苗中细胞壁结合的阿魏酸可能对抗旱和恢复的贡献

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

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

摘要

Studies were undertaken to estimate whether the presence of free and cell-wall-bound ferulic acid in leaf tissues can support drought resistance and its recovery under rehydration. An experiment was carried out on two genotypes of winter triticale: Lamberto and Ticino, at the propagation phase. Lamberto exhibited high content of ferulic acid bound with carbohydrates of the cell-wall under drought and rehydration. The markedly better parameters of chlorophyll fluorescence for this variety under both treatments correlated strongly and positively with the high contents of cell-wall-bound ferulic acid. The photosynthetic apparatus of Lamberto, in relation to Ticino, proved to be the more efficient after 4 weeks of drought treatment. The after-effects of soil drought better elicited the function disturbances of the photosynthetic apparatus in Ticino, which did not fully recover in comparison to Lamberto. Ferulic acid covalently bound to carbohydrates of the cell wall may act as a light filter limiting mesophyll penetration under drought conditions and can also support drought adaptation by down-regulation of leaf growth. The observed increase in the content of cell-wall-bound ferulic acid, as a response to water deficit in the leaf, could be one of the protective mechanisms induced by drought conditions. The ability to accumulate phenolic compounds in dehydrated leaves might be an additional and reliable biochemical parameter indicating the resistance of plants to drought stress.
机译：进行了研究以估计叶片组织中游离和细胞壁结合的阿魏酸的存在是否可以支持抗旱性及其在补液条件下的恢复。在繁殖期对冬季黑小麦的两种基因型进行了实验：Lamberto和Ticino。兰伯托在干旱和水合作用下表现出高含量的阿魏酸与细胞壁的碳水化合物结合。在两种处理下，该品种的叶绿素荧光参数明显更好，与细胞壁结合的阿魏酸含量高有正相关。相对于提契诺州，兰伯托的光合作用设备经干旱处理4周后被证明效率更高。土壤干旱的后遗症更好地引发了提契诺州光合作用设备的功能障碍，与兰伯托相比，该障碍并未完全恢复。与细胞壁碳水化合物共价结合的阿魏酸可以充当滤光器，限制干旱条件下的叶肉渗透，还可以通过下调叶片生长来支持干旱适应。观察到的细胞壁结合阿魏酸含量的增加（作为对叶片水分缺乏的响应），可能是干旱条件引起的保护机制之一。在脱水叶片中积累酚类化合物的能力可能是表明植物对干旱胁迫具有抗性的附加且可靠的生化参数。

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