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Genome-Wide Identification of MAPKK and MAPKKK Gene Family Members and Transcriptional Profiling Analysis during Bud Dormancy in Pear (Pyrus x bretschneideri)

文献类型: 外文期刊

作者: Liang, Qin 1 ; Lin, Xiaojie 1 ; Liu, Jinhang 1 ; Feng, Yu 1 ; Niu, Xianqian 3 ; Wang, Chao 1 ; Song, Keke 1 ; Yang, Chao 1 ; Li, Liang 4 ; Li, Yongyu 1 ;

作者机构: 1.Fujian Agr & Forestry Univ, Inst Nat Prod Hort Plants, Fuzhou 350002, Peoples R China

2.Guangan Modern Agr Ind Pk Serv Ctr, Guangan 638500, Peoples R China

3.Fujian Inst Trop Crops, Zhangzhou 363001, Peoples R China

4.Fujian Acad Agr Sci, Fruit Res Inst, Fuzhou 350002, Peoples R China

关键词: Pyrus; bud dormancy; MAPK member-mediated genes; gene family; bioinformatics analysis

期刊名称:PLANTS-BASEL ( 影响因子:4.658; 五年影响因子:4.827 )

ISSN:

年卷期: 2022 年 11 卷 13 期

页码:

收录情况: SCI

摘要: The mitogen-activated protein kinase (MAPK) cascade consisting of three types of reversibly major signal transduction module (MAPKKK, MAPKK, and MAPK) is distributed in eukaryotes. MAPK cascades participate in various aspects of plant development, including hormone responses, cell division and plant dormancy. Pear is one of the most economically important species worldwide, and its yield is directly affected by dormancy. In this study, genome-wide identification of MAPKK and MAPKKK gene family members in Pyrus x bretschneideri and transcriptional expression analysis of MAPK cascades during pear dormancy were performed. We identified 8 MAPKKs (PbrMKKs) and 100 MAPKKKs (PbrMAPKKKs) in Pyrus using recent genomic information. PbrMAPKKs were classified into four subgroups based on phylogenetic analysis, whereas PbrMAPKKKs were grouped into 3 subfamilies (MEKK, Raf, and ZIK). Most PbrMAPKKKs and PbrMAPKKs in the same subfamily had similar gene structures and conserved motifs. The genes were found on all 17 chromosomes. The comprehensive transcriptome analysis and quantitative real-time polymerase chain reaction (qRT-PCR) results showed that numerous MAPK cascade genes participated in pear bud dormancy. The interaction network and co-expression analyses indicated the crucial roles of the MAPK member-mediated network in pear bud dormancy. Overall, this study advances our understanding of the intricate transcriptional control of MAPKKK-MAPKK-MAPK genes and provides useful information on the functions of dormancy in perennial fruit trees.

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