Foxtail millet SiCDPK7 gene enhances tolerance to extreme temperature stress in transgenic plants
文献类型: 外文期刊
作者: Wei, Ji-Tong 1 ; Hou, Ze-Hao 2 ; Wang, Ye 1 ; Hao, Jia-Min 2 ; Wang, Jiajie 1 ; Wang, Wei 3 ; Wang, Weiwei 3 ; Wang, Da-Ming 4 ; Xu, Zhao-Shi 2 ; Song, Xinyuan 4 ; Wang, Fengzhi 3 ; Li, Runzhi 1 ;
作者机构: 1.Beijing Univ Agr, Natl Expt Teaching Demonstrat Ctr Plant Prod, Beijing Key Lab New Technol Agr Applicat, Beijing 102206, Peoples R China
2.Inst Crop Sci, Chinese Acad Agr Sci, Key Lab Biol & Genet Improvement Triticeae Crops, Minist Agr,Natl Key Facil Crop Gene Resources & G, Beijing 100081, Peoples R China
3.Cangzhou Acad Agr & Forestry Sci, Hebei Key Lab Crop Salt alkali Stress Tolerance Ev, Cangzhou 061000, Peoples R China
4.Agrobiotechnol Res Inst, Jilin Acad Agr Sci, Changchun 130033, Peoples R China
关键词: Foxtail millet; CDPKs; Response mechanism; Temperature tolerance; Physiological and biochemical indexes
期刊名称:ENVIRONMENTAL AND EXPERIMENTAL BOTANY ( 影响因子:5.7; 五年影响因子:6.0 )
ISSN: 0098-8472
年卷期: 2023 年 207 卷
页码:
收录情况: SCI
摘要: Global climate change has resulted in increasingly harsh environments that have become the restriction factors for plants growth and development. Calcium-dependent protein kinases (CDPKs) in plants play critical roles in resisting various abiotic stresses, such as heat and cold stresses. Using the expression pattern analysis of foxtail millet CDPK family members under heat-and cold-treatments, respectively, and the SiCDPK7 was found to respond to extreme temperature stress and was selected for further study. The results suggested that over -expression of SiCDPK7 in Arabidopsis conferred tolerance to heat stress by increasing seedling survival rates and hypocotyl elongation compared with wild type (WT) plants, and also can enhance heat stress tolerance in foxtail millet. Analysis of physiological and biochemical indexes showed that SiCDPK7 transgenic plant lines had the markedly higher catalase (CAT) activity and the significantly lower malonaldehyde (MDA) content than WT plants. In addition, qRT-PCR analysis showed that the transcription levels of heat and cold stress-responsive genes were significantly increased in SiCDPK7 transgenic Arabidopsis and foxtail millet under stress condi-tions. This supporting evidence suggests that SiCDPK7 facilitated the extreme temperature tolerance capabilities in plants
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