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Overexpression of a maize SNF-related protein kinase gene, ZmSnRK2.11, reduces salt and drought tolerance in Arabidopsis

文献类型：外文期刊

作者： Zhang Fan ¹ ; Chen Xun-Ji ² ; Wang Jian-Hua ¹ ; Zheng Jun ² ;

作者机构： 1.China Agr Univ, Coll Agr & Biotechnol, Beijing 100193, Peoples R China

2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China

3.Xinjiang Acad Agr Sci, Inst Nucl Technol & Biotechnol, Urumqi 830091, Peoples R China

关键词： maize;salt and drought stresses;ZmSnRK2.11;SnRK2

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （影响因子：2.848；五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2015 年 14 卷 7 期

页码：

收录情况： SCI

摘要： Sucrose non-fermenting-1 related protein kinase 2 (SnRK2) is a unique family of protein kinases associated with abiotic stress signal transduction in plants. In this study, a maize SnRK2 gene ZmSnRK2.11 was cloned and characterized. The results showed that ZmSnRK2.11 is up-regulated by high-salinity and dehydration treatment, and it is expressed mainly in maize mature leaf. A transient expression assay using onion epidermal cells revealed that ZmSnRK2.11-GFP fusion proteins are localized to both the nucleus and cytoplasm. Overexpressing-ZmSnRK2.11 in Arabidopsis resulted in salt and drought sensitivity phenotypes that exhibited an increased rate of water loss, reduced relative water content, delayed stoma closure, accumulated less free proline content and increased malondialdehyde (MDA) content relative to the phenotypes observed in wild-type (WT) control. Furthermore, overexpression of ZmSnRK2.11 up-regulated the expression of the genes ABI1 and ABI2 and decreased the expression of DREB2A and P5CS1. Taken together, our results suggest that ZmSnRK2.11 is a possible negative regulator involved in the salt and drought stress signal transduction pathways in plants.

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