Genome-Wide Identification and Expression Analysis of the R2R3-MYB Gene Family in Rubber Trees
文献类型： 外文期刊
作者： Liu, Mingyang 1 ; Yang, Hong 1 ; Fan, Songle 1 ; Guo, Bingbing 1 ; Dai, Longjun 1 ; Wang, Lifeng 1 ; Wang, Meng 2 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, State Key Lab Incubat Base Cultivat & Physiol Trop, Minist Agr & Rural Affairs,Key Lab Biol & Genet Re, Haikou 571101, Peoples R China
2.Hainan Univ, Sanya Nanfan Res Inst, Sanya 572025, Peoples R China
3.Hainan Univ, Sch Plant Protect, Haikou 570228, Peoples R China
关键词： Hevea brasiliensis Muell; Arg; HbMYB; powdery mildew; ethylene; phylogenetic analysis
期刊名称：FORESTS （ 影响因子：2.9； 五年影响因子：3.0 ）
ISSN：
年卷期： 2023 年 14 卷 4 期
页码：
收录情况： SCI
摘要： The plant MYB transcription factor family featured as highly conserved DNA-binding domains consisting of 1 to 4 imperfect repeats (R). Increasing evidence indicates that MYB genes participates in growth, differentiation, metabolism, and biotic and abiotic stress responses. However, the functions of MYB genes in the rubber tree remain to be deeply elucidated, especially R2R3-MYB gene family. In this study, molecular biology, bioinformatics, and qRT-PCR were used to identify and analyze HbR2R3-MYB gene family members in the rubber tree. A total of 132 members of the R2R3-MYB gene family were identified in the rubber tree based on genome-wide level. Most of the HbR2R3-MYBs were mapped to 17 rubber tree chromosomes except four genes. A phylogenetic analysis divided all the HbR2R3-MYBs into 20 subgroups with Arabidopsis thaliana. MEME analysis showed that the protein of HbR2R3-MYBs was characterized by 9 conserved motifs. Twenty-six representative R2R3 HbMYBs from different subgroups were selected for expression profiles analysis and the results revealed that the HbR2R3-MYBs members showed various expression patterns in different tissues, powdery mildew-infected and ethylene treatment, implying the diversity of their functions in rubber trees. These results provide fundamental knowledge for further studying the response of the HbR2R3-MYB family to stress and regulation latex flow in rubber tree.
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