Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (10): 2219-2228.DOI: 10.3969/j.issn.1004-1524.20231186

• Horticultural Science • Previous Articles     Next Articles

Cloning and functional analysis of JcERF22 gene from Jatropha curcas

TANG Yuehui(), CHEN Shuying, HE Wenqiong, WANG Hanjin, BAO Xinxin, JIA Sainan, WANG Yaoyao, CHEN Yuyang, YANG Tongwen   

  1. College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou 466001, Henan, China
  • Received:2023-10-13 Online:2024-10-25 Published:2024-10-30

Abstract:

AP2/ERF transcription factors play an important role in growth, development and responding to abiotic stress processes of plant. The object of this study was to isolate a Jatropha curcas AP2/ERF gene JcERF22, to analyze its expression response to abiotic stress, and to identify its role in regulating abiotic stress in transgenic Arabidopsis thaliana, so as to provide the molecular basis for the cultivation of stress-tolerant varieties of J. curcas. In this study, the JcERF22 gene was cloned from J. curcas using reverse transcription PCR (RT-PCR) technique. The sequence of JcERF22 gene was analyzed by bioinformatics. The expression pattern of JcERF22 gene under abiotic stress was analyzed using real time fluorogenic quantitative PCR (qRT-PCR). JcERF22 overexpressing A. thaliana plants were constructed using the pollen dip method, and the phenotypes of the transgenic plants were analyzed under normal growth, phosphorus deficiency, and salt stress. The results showed that the coding sequence (CDS) length of JcERF22 gene was 1 074 bp, encoding 357 amino acids. Subcellular localization analysis showed that JcERF22 protein was located in the nucleus. The expression level of JcERF22 gene in the leaves of J. curcas was significantly decreased under phosphorus deficiency and salt stress. Under normal conditions, overexpression of JcERF22 gene did not affect the growth and development of A. thaliana, but increased the length and number of root hairs. Under phosphorus deficiency stress, the anthocyanin content in the leaves of JcERF22 overexpressing A. thaliana was significantly lower than that of wild type, and the expression levels of anthocyanin synthesis related genes (CHS, DFR, F3H, LDOX, FLS1, UF3GT) were also significantly lower than those of wild type. Under salt stress, the leaves of JcERF22 overexpressing A. thaliana were seriously albino, and the fresh weight was significantly lower than that of the wild type, and the expression levels of abiotic stress-related genes (AtHKT1;1, AtP5CS1 ) were significantly lower than those of wild type. In summary, the JcERF22 gene plays an important role in the response of J. curcas to phosphorus deficiency and salt stress.

Key words: Jatropha curcas, JcERF22 gene, AP2/ERF transcription factor, phosphorus deficiency, salt stress

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