Genome-wide analysis of AP2/ERF gene and functional analysis of CqERF24 gene in drought stress in quinoa
文献类型: 外文期刊
第一作者: Zhu, Xiaolin
作者: Zhu, Xiaolin;Wang, Baoqiang;Wei, Xiaohong;Wang, Xian;Du, Xuefeng;Liu, Haixun;Zhu, Xiaolin;Wang, Baoqiang;Wei, Xiaohong;Wang, Xian;Du, Xuefeng;Liu, Haixun;Zhu, Xiaolin;Wang, Baoqiang;Wei, Xiaohong;Wang, Xian;Du, Xuefeng;Liu, Haixun;Liu, Wenyu
作者机构:
关键词: Quinoa; AP2/ERF; ought; Subcellular localization; CqERF24; Gene function
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 253 卷
页码:
收录情况: SCI
摘要: Quinoa is a crop with high nutritional value and strong stress resistance. AP2/ERF transcription factors play a key role in plant growth and development. In this study, 148 AP2/ERF genes were identified in quinoa, which were divided into 5 subfamilies, including ERF, AP2, DREB, RAV and Soloist. The results showed that the number of introns ranged from 0 to 11, and the Motif 1-Motif 4 was highly conserved in most CqAP2/ERF proteins. The 148 CqAP2/ERF genes were distributed on 19 chromosomes. There were 93 pairs of duplicating genes in this family, and gene duplication played a critical role in the expansion of this family. Protein-protein interaction indicated that the proteins in CqAP2/ERF subfamily exhibited complex interactions, and GO enrichment analysis indicated that 148 CqAP2/ERF proteins were involved in transcription factor activity. In addition, CqAP2/ERF gene contains a large number of elements related to hormones in promoter region (IAA, GA, SA, ABA and MeJA) and stresses (salt, drought, low temperature and anaerobic induction). Transcriptome analysis under drought stress indicated that most of the CqAP2/ERF genes were responsive to drought stress, and subcellular localization indicated that CqERF24 was location in the nucleus, qRT-PCR results also showed that most of the genes such as CqERF15, CqERF24, CqDREB03, CqDREB14, CqDREB37 and CqDREB43 also responded to drought stress in roots and leaves. Overexpression of CqERF24 in Arabidopsis thaliana enhanced drought resistance by increasing antioxidant enzyme activity and activation-related stress genes, and the gene is sensitive to ABA, while silencing CqERF24 in quinoa decreased drought tolerance. In addition, overexpression of CqERF24 in quinoa calli enhanced resistance to mannitol. These results lay a solid foundation for further study on the role of AP2/ERF family genes in quinoa under drought stress.
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