Genome-wide analysis of evolution and expression profiles of NAC transcription factor gene family inJuglans regiaL.

文献类型： 外文期刊

第一作者： Khan, Hanif

作者： Khan, Hanif;Yan, Feng;Yan, Yujie;Chen, Pengpeng;Xi, Ruimin;Ullah, Irfan;Zhao, Peng;Peng, Xiaobang;Luo, Xiang;Yue, Ming

作者机构：

关键词： Juglans regia; NACtranscription factor; Expression profile; q-PCR; Flowering

期刊名称：ANNALS OF FOREST SCIENCE （ 影响因子：2.583； 五年影响因子：3.148 ）

ISSN： 1286-4560

年卷期： 2020 年 77 卷 3 期

页码：

收录情况： SCI

摘要： Key message NACtranscription factors may play important roles in the biological processes in Persian walnut. A total of 102JrNACs were identified in Persian walnut. The conserved domains, transcriptome profile, expression analysis, and interaction network suggest thatJrNAC1-4plays potential roles in Persian walnut flowering development. Context NACsare plant-specific transcription factors that participate in various plant developmental processes such as flowering, plant growth regulation, and development. We identified and analyzed the evolution and expression profiles ofNACgenes inJuglans regia. Aims The main objectives were to identify theNACtranscription factors and verify the expression levels in different tissues and female flowers in developmental stages in Persian walnut. Methods We identifiedNACtranscription factors inJ. regiabased on the genome-wide analysis. We analyzed the phylogenetic relationships, conserved domain, chromosome location, gene structure, and gene collinearity ofJrNACs. We also verified theJrNACexpression levels based on transcriptome analysis and qRT-PCR. Results We identified 102NACgenes inJ. regiaand divided them into ten subfamilies. A total of 30 pairs ofJrNACgenes were expanded by whole-genome duplications (WGDs) and one pair of genes (JrNAC2-10andJrNAC9-8) as a tandem duplication in Persian walnut. Collinearity analysis results indicate that a large number of syntenic relationship events existed betweenJ. regiaandPopulus trichocarpa. We found thatJrNAC1-4andJrNAC2-6were expressed significantly higher in female flowers based on both transcriptome and qPCR analysis. We further identified thatJrNAC2-9andJrNAC9-6were highly expressed at the end period of flowering stages. Conclusion A total of 102JrNACs were identified in the Persian walnut genome. These genes were conserved in plants for collinearity analysis, which was performed within the genome and other genomes (P. trichocarpa,Olea europaea, andQuercus robur). A total of 24NACtranscription factors were highly expressed in female and male flowers, and these transcription factors play a role inJ. regiaflowering.

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