Genome-Wide Identification and Expression Profile of the HD-Zip Transcription Factor Family Associated with Seed Germination and Abiotic Stress Response in Miscanthus sinensis
文献类型： 外文期刊
作者： Chen, Jiayi 1 ; Ran, Qifan 2 ; Yang, Zhongfu 1 ; Zhou, Ying 1 ; Yuan, Zhihang 1 ; Lai, Huiqi 1 ; Wang, Jing 1 ; Nie, Gang 1 ; Zhu, Yongqun 3 ;
作者机构： 1.Sichuan Agr Univ, Coll Grassland Sci & Technol, Dept Forage Breeding & Cultivat, Chengdu 611130, Peoples R China
2.Chongqing Acad Anim Sci, Inst Grassland Sci, Chongqing 402460, Peoples R China
3.Sichuan Acad Agr Sci, Inst Agr Resources & Environm, Chengdu 610066, Peoples R China
关键词： Miscanthus sinensis; HD-Zip transcription factor; abiotic stress; seed germination; gene expression
期刊名称：GENES （ 影响因子：4.141； 五年影响因子：4.474 ）
ISSN：
年卷期： 2022 年 13 卷 12 期
页码：
收录情况： SCI
摘要： Miscanthus sinensis is an ornamental grass, non-food bioenergy crop, and forage with high feeding value. It can adapt to many kinds of soil conditions due to its high level of resistance to various abiotic stresses. However, a low level of seed germination restricts the utilization and application of M. sinensis. It is reported that the Homeodomain-leucine zipper (HD-Zip) gene family participates in plant growth and development and ability to cope with outside environment stresses, which may potentially regulate seed germination and stress resistance in M. sinensis. In this study, a complete overview of M. sinensis HD-Zip genes was conducted, including gene structure, conserved motifs, chromosomal distribution, and gene duplication patterns. A total of 169 members were identified, and the HD-Zip proteins were divided into four subgroups. Inter-chromosomal evolutionary analysis revealed that four pairs of tandem duplicate genes and 72 segmental duplications were detected, suggesting the possible role of gene replication events in the amplification of the M. sinensis HD-Zip gene family. There was an uneven distribution of HD-Zip genes on 19 chromosomes of M. sinensis. Also, evolutionary analysis showed that M. sinensis HD-Zip gene family members had more collinearity with monocotyledons and less with dicotyledons. The gene structure analysis showed that there were 93.5% of proteins with motif 1 and motif 4, while motif 10 was only found in group IV. Based on the cis-elements analysis, it appeared that most of the genes were related to plant growth and development, various hormones, and abiotic stress. Furthermore, qRT-PCR analysis showed that Misin06G303300.1 was significantly expressed in seed germination and Misin05G030000.1 and Misin06G303300.1 were highly expressed under chromium, salt, and drought stress. Results in this study will provide a basis for further exploring the potential role of HD-Zip genes in stress responses and genetic improvement of M. sinensis seed germination.
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