您好,欢迎访问四川省农业科学院 机构知识库!

ZmXTH, a xyloglucan endotransglucosylase/hydrolase gene of maize, conferred aluminum tolerance in Arabidopsis

文献类型: 外文期刊

作者: Du, Hanmei 1 ; Hu, Xiaoqi 1 ; Yang, Wei 1 ; Hu, Wanpeng 1 ; Yan, Weina 1 ; Li, Yushan 1 ; He, Wenzhu 2 ; Cao, Moju 1 ; Zhang 1 ;

作者机构: 1.Sichuan Agr Univ, Maize Res Inst, Key Lab Biol & Genet Improvement Maize Southwest, Minist Agr, Chengdu 611130, Peoples R China

2.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Peoples R China

关键词: Maize; Aluminum toxicity; ZmXTH; Arabidopsis thaliana; Cell wall

期刊名称:JOURNAL OF PLANT PHYSIOLOGY ( 影响因子:3.549; 五年影响因子:4.164 )

ISSN: 0176-1617

年卷期: 2021 年 266 卷

页码:

收录情况: SCI

摘要: Aluminum (Al) toxicity is one of the primary factors limiting crop production in acid soils worldwide. The cell wall is the major target of Al toxicity owing to the presence of many Al binding sites. Previous studies have found that XTH, encoding xyloglucan endohydrolase (XEH) and xyloglucan endotransglucosylase (XET), could participate in cell wall extension and affect the binding ability of the cell wall to Al by impeding the activities of these two enzymes. In this study, we found that ZmXTH, an XTH gene in maize, was involved in Al detoxification. The Al-induced up-regulation of ZmXTH occurred in the roots, prominently in the root tips. Additionally, the expression of ZmXTH was specifically induced by Al3+ but no other divalent or trivalent cations. Compared with the wild-type Arabidopsis, ZmXTH overexpressing plants grew more healthy and had decreased Al content in their root and root cell wall after Al stress. Overall, the results suggest that ZmXTH could confer the Al tolerance of transgenic Arabidopsis plants by reducing the Al accumulation in their roots and cell walls.

  • 相关文献
作者其他论文 更多>>