Overexpression of a cotton (Gossypium hirsutum) WRKY gene, GhWRKY34, in Arabidopsis enhances salt-tolerance of the transgenic plants

Plant Physiology and Biochemistry : PPB
Li ZhouXue-Bao Li

Abstract

Soil salinity is one of the most serious threats in world agriculture, and often influences cotton growth and development, resulting in a significant loss in cotton crop yield. WRKY transcription factors are involved in plant response to high salinity stress, but little is known about the role of WRKY transcription factors in cotton so far. In this study, a member (GhWRKY34) of cotton WRKY family was functionally characterized. This protein containing a WRKY domain and a zinc-finger motif belongs to group III of cotton WRKY family. Subcellular localization assay indicated that GhWRKY34 is localized to the cell nucleus. Overexpression of GhWRKY34 in Arabidopsis enhanced the transgenic plant tolerance to salt stress. Several parameters (such as seed germination, green cotyledons, root length and chlorophyll content) in the GhWRKY34 transgenic lines were significantly higher than those in wild type under NaCl treatment. On the contrary, the GhWRKY34 transgenic plants exhibited a substantially lower ratio of Na(+)/K(+) in leaves and roots dealing with salt stress, compared with wild type. Growth status of the GhWRKY34 transgenic plants was much better than that of wild type under salt stress. Expressions of the stress-related genes...Continue Reading

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Citations

Aug 1, 2018·International Journal of Molecular Sciences·Wei LiXian-Guo Cheng
Jan 15, 2020·Molecular Biology Reports·Abid UllahXiyan Yang
Sep 21, 2018·Genetics and Molecular Biology·Taciane FinattoAntonio Costa de Oliveira
Feb 26, 2019·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Zhe WangHeping Cao
Sep 30, 2017·Frontiers in Plant Science·Ke WangBei-Bei Jiang
Nov 21, 2019·International Journal of Molecular Sciences·Jianbo LiHuixia Jia
Oct 28, 2019·International Journal of Molecular Sciences·Qi GuoXinlian Shen
Sep 10, 2020·Plant Science : an International Journal of Experimental Plant Biology·Qinglong DongFengwang Ma

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