4.6 Article

Effective root responses to salinity stress include maintained cell expansion and carbon allocation

期刊

NEW PHYTOLOGIST
卷 238, 期 5, 页码 1942-1956

出版社

WILEY
DOI: 10.1111/nph.18873

关键词

carbon partitioning; cell expansion; halophytes; root growth; salt stress; Schrenkiella parvula

向作者/读者索取更多资源

Acclimation of root growth is crucial for plants to survive salt stress. The halophyte Schrenkiella parvula exhibits better root growth response and physiological adjustments under salt stress compared to Arabidopsis thaliana, which provides insights into potential strategies for improving salt tolerance in plants. Transcriptomic analysis revealed the induction of sugar transporters and genes regulating cell expansion and suberization in S. parvula roots under salt stress.
Acclimation of root growth is vital for plants to survive salt stress. Halophytes are great examples of plants that thrive even under severe salinity, but their salt tolerance mechanisms, especially those mediated by root responses, are still largely unknown.We compared root growth responses of the halophyte Schrenkiella parvula with its glycophytic relative species Arabidopsis thaliana under salt stress and performed transcriptomic analysis of S. parvula roots to identify possible gene regulatory networks underlying their physiological responses.Schrenkiella parvula roots do not avoid salt and experience less growth inhibition under salt stress. Salt-induced abscisic acid levels were higher in S. parvula roots compared with Arabidopsis. Root transcriptomic analysis of S. parvula revealed the induction of sugar transporters and genes regulating cell expansion and suberization under salt stress. C-14-labeled carbon partitioning analyses showed that S. parvula continued allocating carbon to roots from shoots under salt stress while carbon barely allocated to Arabidopsis roots. Further physiological investigation revealed that S. parvula roots maintained root cell expansion and enhanced suberization under severe salt stress.In summary, roots of S. parvula deploy multiple physiological and developmental adjustments under salt stress to maintain growth, providing new avenues to improve salt tolerance of plants using root-specific strategies.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据