文献类型： 外文期刊

作者： Zhu, Ling ¹ ; Yin, Tuo ¹ ; Zhang, Mengjie ² ; Yang, Xiuyao ¹ ; Wu, Jiexin ² ; Cai, Hanbing ¹ ; Yang, Na ² ; Li, Xulin ² ; Wen, Ke ² ; Chen, Daming ³ ; Zhang, Hanyao ¹ ; Liu, Xiaozhen ² ;

作者机构： 1.Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sout, Minist Educ, Kunming 650224, Peoples R China

2.Southwest Forestry Univ, Key Lab Biodivers Conservat Southwest China, Natl Forest & Grassland Adm, Kunming 650224, Peoples R China

3.Yunnan Acad Agr Sci, Res Inst Agr Ecol Hot Areas, Yuan Mou 651300, Yunnan, Peoples R China

关键词： Kiwifruit; GRAS transcription factors; Genome-wide analysis; Transcriptome; Salt stress; Expression patterns

期刊名称：BMC GENOMICS （ 影响因子：4.4； 五年影响因子：4.7 ）

ISSN： 1471-2164

年卷期： 2024 年 25 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundGRAS is a family of plant-specific transcription factors (TFs) that play a vital role in plant growth and development and response to adversity stress. However, systematic studies of the GRAS TF family in kiwifruit have not been reported.ResultsIn this study, we used a bioinformatics approach to identify eighty-six AcGRAS TFs located on twenty-six chromosomes and phylogenetic analysis classified them into ten subfamilies. It was found that the gene structure is relatively conserved for these genes and that fragmental duplication is the prime force for the evolution of AcGRAS genes. However, the promoter region of the AcGRAS genes mainly contains cis-acting elements related to hormones and environmental stresses, similar to the results of GO and KEGG enrichment analysis, suggesting that hormone signaling pathways of the AcGRAS family play a vital role in regulating plant growth and development and adversity stress. Protein interaction network analysis showed that the AcGRAS51 protein is a relational protein linking DELLA, SCR, and SHR subfamily proteins. The results demonstrated that 81 genes were expressed in kiwifruit AcGRAS under salt stress, including 17 differentially expressed genes, 13 upregulated, and four downregulated. This indicates that the upregulated AcGRAS55, AcGRAS69, AcGRAS86 and other GRAS genes can reduce the salt damage caused by kiwifruit plants by positively regulating salt stress, thus improving the salt tolerance of the plants.ConclusionsThese results provide a theoretical basis for future exploration of the characteristics and functions of more AcGRAS genes. This study provides a basis for further research on kiwifruit breeding for resistance to salt stress. RT-qPCR analysis showed that the expression of 3 AcGRAS genes was elevated under salt stress, indicating that AcGRAS exhibited a specific expression pattern under salt stress conditions.