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Heat shock protein TaHSP17.4, a TaHOP interactor in wheat, improves plant stress tolerance

文献类型： 外文期刊

作者： Wang, Yi-Xuan 1 ; Yu, Tai-Fei 2 ; Wang, Chun-Xiao 2 ; Wei, Ji-Tong 2 ; Zhang, Shuang-Xi 4 ; Liu, Yong-Wei 5 ; Chen, Jun 2 ; Zhou, Yong-Bin 2 ; Chen, Ming 2 ; Ma, You-Zhi 2 ; Lan, Jin-Hao 1 ; Zheng, Jia-Cheng 6 ; Li, Feng 3 ; Xu, Zhao-Shi 2 ;

作者机构： 1.Qingdao Agr Univ, Coll Agron, Qingdao 266109, Peoples R China

2.Chinese Acad Agr Sci CAAS, Inst Crop Sci, Key Lab Biol & Genet Improvement Triticeae Crops, Minist Agr,Natl Key Facil Crop Gene Resources & Ge, Beijing 100081, Peoples R China

3.Changsha Med Univ, Hunan Prov Key Lab Res & Dev Novel Pharmaceut Prep, Double Class Applicat Characterist Discipline Huna, Changsha 410219, Peoples R China

4.Ningxia Acad Agr & Forestry Sci, Inst Crop Sci, Yongning 750105, Peoples R China

5.Hebei Acad Agr & Forestry Sci, Inst Biotechnol & Food Sci, Plant Genet Engn Ctr Hebei Prov, Shijiazhuang 050051, Peoples R China

6.Anhui Sci & Technol Univ, Coll Agron, Fengyang 233100, Peoples R China

7.Chinese Acad Agr Sci, Natl Nanfan Res Inst Sanya, Hainan Yazhou Bay Seed Lab, Sanya 572024, Peoples R China

关键词： HSP family; Stress tolerance; Protein interaction; Molecular mechanism; Triticum aestivum L

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）

ISSN： 0141-8130

年卷期： 2023 年 246 卷

页码：

收录情况： SCI

摘要： Adaptation to drought and salt stresses is a fundamental part of plant cell physiology and is of great significance for crop production under environmental stress. Heat shock proteins (HSPs) are molecular chaperones that play a crucial role in folding, assembling, translocating, and degrading proteins. However, their underlying mechanisms and functions in stress tolerance remain elusive. Here, we identified the HSP TaHSP17.4 in wheat by analyzing the heat stress-induced transcriptome. Further analysis showed that TaHSP17.4 was significantly induced under drought, salt, and heat stress treatments. Intriguingly, yeast-two-hybrid analysis showed that TaHSP17.4 in-teracts with the HSP70/HSP90 organizing protein (HOP) TaHOP, which plays a significant role in linking HSP70 and HSP90. We found that TaHSP17.4- and TaHOP-overexpressing plants have a higher proline content and a lower malondialdehyde content than wild-type plants under stress conditions and display strong tolerance to drought, salt, and heat stress. Additionally, qRT-PCR analysis showed that stress-responsive genes relevant to reactive oxygen species scavenging and abscisic acid signaling pathways were significantly induced in TaHSP17.4- and TaHOP-overexpressing plants under stress conditions. Together, our findings provide insight into HSP functions in wheat and two novel candidate genes for improvement of wheat varieties.

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