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拟南芥中bZIP28与HSFA2在热响应信号调控中的协同作用。

Coordination between bZIP28 and HSFA2 in the regulation of heat response signals in Arabidopsis.

作者信息

Kataoka Ryo, Takahashi Misato, Suzuki Nobuhiro

机构信息

a Department of Materials and Life Sciences, Faculty of Science and Technology , Sophia University , Chiyoda-ku, Tokyo , Japan.

出版信息

Plant Signal Behav. 2017 Nov 2;12(11):e1376159. doi: 10.1080/15592324.2017.1376159. Epub 2017 Sep 5.

DOI:10.1080/15592324.2017.1376159
PMID:28873003
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5703228/
Abstract

Heat stress can have detrimental effects on yield production worldwide. Although bZIP28 and HSFA2 were identified as putative heat sensors in plants, coordination between them has not been uncovered. In this study, the deficiency in bZIP28 did not affect heat tolerance in plants. However, the plants lacking bZIP28 showed enhanced activation of APXs-, MBF1c-and HSPs-dependent pathways as well as higher level of HsfA2 transcripts and HO accumulation, suggesting that these pathways might compensate for the deficiency in bZIP28 during heat stress. In addition, requirement of HSFA2 for the activation of APXs-dependent pathway during heat stress was supported by the analyses of plants lacking HSFA2. Our study demonstrated the flexible mode of heat response pathways involving bZIP28, HSFA2 and ROS-dependent signals.

摘要

热应激会对全球作物产量产生不利影响。尽管bZIP28和HSFA2被确定为植物中假定的热传感器，但它们之间的协调作用尚未被揭示。在本研究中，bZIP28的缺陷并不影响植物的耐热性。然而，缺乏bZIP28的植物显示出APXs-、MBF1c-和HSPs依赖途径的激活增强，以及HsfA2转录本和HO积累水平更高，这表明这些途径可能在热应激期间弥补bZIP28的缺陷。此外，对缺乏HSFA2的植物的分析支持了热应激期间HSFA2对激活APXs依赖途径的必要性。我们的研究证明了涉及bZIP28、HSFA2和ROS依赖信号的热响应途径的灵活模式。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b1e/5703228/f57c60041a06/kpsb-12-11-1376159-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b1e/5703228/255043223eb5/kpsb-12-11-1376159-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b1e/5703228/87e22059d0ee/kpsb-12-11-1376159-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b1e/5703228/f57c60041a06/kpsb-12-11-1376159-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b1e/5703228/255043223eb5/kpsb-12-11-1376159-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b1e/5703228/87e22059d0ee/kpsb-12-11-1376159-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b1e/5703228/f57c60041a06/kpsb-12-11-1376159-g003.jpg

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