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一种Cys2His2锌指转录因子正向调控[具体物种]中的盐胁迫。

A Cys2His2 Zinc Finger Transcription Factor Positively Modulates Salt Stress in .

作者信息

Zhang Xi, Guo Qing, Qin Linlin, Li Li

机构信息

State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China.

出版信息

Front Plant Sci. 2022 May 25;13:823547. doi: 10.3389/fpls.2022.823547. eCollection 2022.

DOI:10.3389/fpls.2022.823547
PMID:35693173
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9174930/
Abstract

Zinc finger proteins (ZFPs) are widely involved in plant growth and abiotic stress responses, however, few of these proteins have been functionally characterized in tree species. In this study, we cloned and characterized the gene encoding a C2H2-type ZFP from . is a transcription factor localized in the nucleus, with a transcription activation domain located at the N-terminus. was predominantly expressed in stems and was induced by salt. We generated transgenic birch lines displaying overexpression (OE) or RNAi silencing (Ri) of and exposed these along with wild-type birch seedlings to salinity. Phenotypic and physiological parameters such as superoxide dismutase, peroxisome, HO content, proline content, water loss rate, and malondialdehyde content were examined. Overexpression of in birch conferred increased salt tolerance. Chromatin immunoprecipitation-qPCR and RNA-seq showed that BpSZA1 binds to the GAGA-motif in the promoter of downstream target genes including , , , and to activate their transcription. also participates in abscisic acid (ABA) biosynthesis, proline biosynthesis, and the ABA/jasmonic acid pathway to enhance the salt stress of .

摘要

锌指蛋白（ZFPs）广泛参与植物生长和非生物胁迫反应，然而，这些蛋白在树种中的功能表征却很少。在本研究中，我们从[具体树种名称未给出]克隆并鉴定了一个编码C2H2型锌指蛋白的基因。[具体蛋白名称未给出]是一种定位于细胞核的转录因子，其转录激活域位于N端。[具体蛋白名称未给出]主要在茎中表达，并受盐诱导。我们构建了过表达（OE）或RNA干扰沉默（Ri）[具体蛋白名称未给出]的转基因桦树株系，并将这些株系与野生型桦树幼苗一起进行盐处理。检测了超氧化物歧化酶、过氧化物酶体、过氧化氢含量、脯氨酸含量、失水率和丙二醛含量等表型和生理参数。桦树中[具体蛋白名称未给出]的过表达赋予了其更高的耐盐性。染色质免疫沉淀-qPCR和RNA测序表明，BpSZA1与包括[具体基因名称未给出]、[具体基因名称未给出]、[具体基因名称未给出]和[具体基因名称未给出]在内的下游靶基因启动子中的GAGA基序结合，以激活它们的转录。[具体蛋白名称未给出]还参与脱落酸（ABA）生物合成、脯氨酸生物合成以及ABA/茉莉酸途径，以增强[具体树种名称未给出]的盐胁迫耐受性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/0db42718219d/fpls-13-823547-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/9e7ab6966ba2/fpls-13-823547-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/eb1913ea463a/fpls-13-823547-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/e7375a862549/fpls-13-823547-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/16c85e9e0b5f/fpls-13-823547-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/56bda3dc608c/fpls-13-823547-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/4e76e0ca685a/fpls-13-823547-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/fbcc5fcfbeea/fpls-13-823547-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/0db42718219d/fpls-13-823547-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/9e7ab6966ba2/fpls-13-823547-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/eb1913ea463a/fpls-13-823547-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/e7375a862549/fpls-13-823547-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/16c85e9e0b5f/fpls-13-823547-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/56bda3dc608c/fpls-13-823547-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/4e76e0ca685a/fpls-13-823547-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/fbcc5fcfbeea/fpls-13-823547-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6540/9174930/0db42718219d/fpls-13-823547-g008.jpg

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