期刊
PLANT SCIENCE
卷 252, 期 -, 页码 246-256出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.plantsci.2016.07.001
关键词
Capsicum annuum L.; Hsp70 family; Genome-wide identification; Expression analysis; Heat stress
资金
- National Key Research and Development Project [2016YFD0101901]
- National Natural Science Foundation of China [31272163, 31572114]
- Shaanxi Agriculture Science and Technology Projects [20141K01-14-01]
- Basic Fund for Scientific Research of Northwest AF University [2452015141]
- Opening Fund of Key Laboratory for Crop Biotechnology of Xinjiang Uygur Autonomous Region [XJYS0302-2014-03]
- Tang Zhongying Fund for Breeding of Northwest AF University
Hsp70s function as molecular chaperones and are encoded by a multi-gene family whose members play a crucial role in plant response to stress conditions, and in plant growth and development. Pepper (Capsicum annuum L.) is an important vegetable crop whose genome has been sequenced. Nonetheless, no overall analysis of the Hsp70 gene family is reported in this crop plant to date. To assess the functionality of Capsicum annuum Hsp70 (CaHsp70) genes, pepper genome database was analyzed in this research. A total of 21 CaHsp70 genes were identified and their characteristics were also described. The promoter and transcript expression analysis revealed that CaHsp70s were involved in pepper growth and development, and heat stress response. Ectopic expression of a cytosolic gene, CaHsp70-2, regulated expression of stress-related genes and conferred increased thermotolerance in transgenic Arabidopsis. Taken together, our results provide the basis for further studied to dissect CaHsp70s' function in response to heat stress as well as other environmental stresses. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
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