文献类型： 外文期刊
作者： Yan, Xiuxiu 1 ; Wu, Xiaojuan 1 ; Sun, Fengcheng 2 ; Nie, Hushuai 1 ; Du, Xiaohong 1 ; Li, Xiaolei 1 ; Fang, Yongyu 2 ; Zhai, Yongqing 1 ; Zhao, Yan 3 ; Fan, Bobo 1 ; Ma, Yanhong 1 ;
作者机构： 1.Inner Mongolia Agr Univ, Agr Coll, Hohhot 010019, Peoples R China
2.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot 010031, Peoples R China
3.Inner Mongolia Agr Univ, Coll Grassland Resources & Environm, Hohhot 010010, Peoples R China
关键词： Agropyron mongolicum; AmGDSL1 gene; drought resistance; antioxidant activity
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）
ISSN： 1661-6596
年卷期： 2024 年 25 卷 17 期
页码：
收录情况： SCI
摘要： Agropyron mongolicum Keng is a diploid perennial grass of triticeae in gramineae. It has strong drought resistance and developed roots that can effectively fix the soil and prevent soil erosion. GDSL lipase or esterases/lipase has a variety of functions, mainly focusing on plant abiotic stress response. In this study, a GDSL gene from A. mongolicum, designated as AmGDSL1, was successfully cloned and isolated. The subcellular localization of the AmGDSL1 gene (pCAMBIA1302-AmGDSL1-EGFP) results showed that the AmGDSL1 protein of A. mongolicum was only localized in the cytoplasm. When transferred into tobacco (Nicotiana benthamiana), the heterologous expression of AmGDSL1 led to enhanced drought tolerance. Under drought stress, AmGDSL1 overexpressing plants showed fewer wilting leaves, longer roots, and larger root surface area. These overexpression lines possessed higher superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and proline (PRO) activities. At the same time, the malondialdehyde (MDA) content was lower than that in wild-type (WT) tobacco. These findings shed light on the molecular mechanisms involved in the GDSL gene's role in drought resistance, contributing to the discovery and utilization of drought-resistant genes in A. mongolicum for enhancing crop drought resistance.
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