...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Botany >OsWRKY45 alleles play different roles in abscisic acid signalling and salt stress tolerance but similar roles in drought and cold tolerance in rice.
【24h】

OsWRKY45 alleles play different roles in abscisic acid signalling and salt stress tolerance but similar roles in drought and cold tolerance in rice.

机译：OsWRKY45 等位基因在脱落酸信号传导和盐胁迫耐性中发挥不同的作用，但在水稻的干旱和耐寒性中起相似的作用。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Although allelic diversity of genes has been shown to contribute to many phenotypic variations associated with different physiological processes in plants, information on allelic diversity of abiotic stress-responsive genes is limited. Here it is shown that the alleles OsWRKY45-1 and OsWRKY45-2 play different roles in abscisic acid (ABA) signalling and salt stress adaptation in rice. The two alleles had different transcriptional responses to ABA and salt stresses. OsWRKY45-1-overexpressing lines showed reduced ABA sensitivity, whereas OsWRKY45-1-knockout lines showed increased ABA sensitivity. OsWRKY45-1 transgenic plants showed no obvious difference from negative controls in response to salt stress. In contrast, OsWRKY45-2-overexpressing lines showed increased ABA sensitivity and reduced salt stress tolerance, and OsWRKY45-2-suppressing lines showed reduced ABA sensitivity and increased salt stress tolerance. OsWRKY45-1 and OsWRKY45-2 transgenic plants showed differential expression of a set of ABA- and abiotic stress-responsive genes, but they showed similar responses to cold and drought stresses. These results suggest that OsWRKY45-1 negatively and OsWRKY45-2 positively regulates ABA signalling and, in addition, OsWRKY45-2 but not OsWRKY45-1 negatively regulates rice response to salt stress. The different roles of the two alleles in ABA signalling and salt stress may be due to their transcriptional mediation of different signalling pathways.
机译：尽管已显示基因的等位基因多样性促成许多与植物中不同生理过程相关的表型变异，但有关非生物胁迫响应基因的等位基因多样性的信息仍然有限。此处显示等位基因 OsWRKY45-1 和 OsWRKY45-2 在水稻的脱落酸（ABA）信号传导和盐胁迫适应中发挥不同的作用。这两个等位基因对ABA和盐胁迫具有不同的转录反应。 OsWRKY45-1 -过表达系显示ABA敏感性降低，而 OsWRKY45-1 -敲除系显示ABA敏感性提高。在盐胁迫下， OsWRKY45-1 转基因植物与阴性对照无明显差异。相比之下， OsWRKY45-2 -过表达系显示出更高的ABA敏感性和降低的盐胁迫耐受性，而 OsWRKY45-2 -抑制系显示出降低的ABA敏感性和增加的盐胁迫耐受性。 OsWRKY45-1 和 OsWRKY45-2 转基因植物显示出一组ABA和非生物胁迫响应基因的差异表达，但它们对寒冷和干旱胁迫表现出相似的响应。这些结果表明， OsWRKY45-1 负调控， OsWRKY45-2 正调控ABA信号传导，此外， OsWRKY45-2 但不调控 OsWRKY45-1 负调节水稻对盐胁迫的反应。这两个等位基因在ABA信号传导和盐胁迫中的不同作用可能是由于它们在不同信号传导途径的转录介导下产生的。

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