Comprehensive analysis of formin gene family highlights candidate genes related to pollen cytoskeleton and male fertility in wheat (Triticum aestivum L.)
文献类型: 外文期刊
作者: Duan, Wen-jing 1 ; Liu, Zi-han 1 ; Bai, Jian-fang 1 ; Yuan, Shao-hua 1 ; Li, Yan-mei 1 ; Lu, Feng-kun 1 ; Zhang, Tian-bao 1 ; Sun, Jia-hui 1 ; Zhang, Feng-ting 1 ; Zhao, Chang-ping 1 ; Zhang, Li-ping 1 ;
作者机构: 1.Beijing Acad Agr & Forestry Sci, Beijing Engn & Tech Res Ctr Hybrid Wheat, Beijing 100097, Peoples R China
2.Municipal Key Lab Mol Genet Hybrid Wheat, Beijing 100097, Peoples R China
3.Capital Normal Univ, Coll Life Sci, Beijing 100048, Peoples R China
关键词: Wheat; Thermo-sensitive genic male sterile; Formin gene family; Cytoskeleton; MiRNA
期刊名称:BMC GENOMICS ( 影响因子:3.969; 五年影响因子:4.478 )
ISSN: 1471-2164
年卷期: 2021 年 22 卷 1 期
页码:
收录情况: SCI
摘要: Background Formin, a highly conserved multi-domain protein, interacts with microfilaments and microtubules. Although specifically expressed formin genes in anthers are potentially significant in research on male sterility and hybrid wheat breeding, similar reports in wheat, especially in thermo-sensitive genic male sterile (TGMS) wheat, remain elusive. Results Herein, we systematically characterized the formin genes in TGMS wheat line BS366 named TaFormins (TaFHs) and predicted their functions in inducing stress response. In total, 25 TaFH genes were uncovered, majorly localized in 2A, 2B, and 2D chromosomes. According to the neighbor-joining (NJ) method, all TaFH proteins from wheat and other plants clustered in 6 sub-groups (A-F). The modeled 3D structures of TaFH1-A/B, TaFH2-A/B, TaFH3-A/B and TaFH3-B/D were validated. And different numbers of stress and hormone-responsive regulatory elements in their 1500 base pair promoter regions were contained in the TaFH genes copies. TaFHs had specific temporal and spatial expression characteristics, whereby TaFH1, TaFH4, and TaFH5 were expressed highly in the stamen of BS366. Besides, the accumulation of TaFHs was remarkably lower in a low-temperature sterile condition (Nanyang) than fertile condition (Beijing), particularly at the early stamen development stage. The pollen cytoskeleton of BS366 was abnormal in the three stages under sterile and fertile environments. Furthermore, under different stress levels, TaFHs expression could be induced by drought, salt, abscisic acid (ABA), salicylic acid (SA), methyl jasmonate (MeJA), indole-3-acetic acid (IAA), polyethylene glycol (PEG), and low temperature. Some miRNAs, including miR167, miR1120, and miR172, interacts with TaFH genes; thus, we constructed an interaction network between microRNAs, TaFHs, phytohormone responses, and distribution of cytoskeleton to reveal the regulatory association between upstream genes of TaFH family members and sterile. Conclusions Collectively, this comprehensive analysis provides novel insights into TaFHs and miRNA resources for wheat breeding. These findings are, therefore, valuable in understanding the mechanism of TGMS fertility conversion in wheat.
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