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Molecular cloning and expression of a novel MYB transcription factor gene in rubber tree

文献类型： 外文期刊

作者： Qin, Bi 1 ; Zhang, Yu 2 ; Wang, Meng 2 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Key Lab Biol & Genet Resources Rubber Tree, Minist Agr, Rubber Res Inst, Danzhou 571737, Hainan, Peoples R China

2.Hainan Univ, Coll Environm & Plant Protect, Haikou 570228, Hainan, Peoples R China

关键词： MYB transcription factor;Hevea brasiliensis;Tapping panel dryness (TPD);Phytohormone

期刊名称：MOLECULAR BIOLOGY REPORTS （ 影响因子：2.316； 五年影响因子：2.357 ）

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收录情况： SCI

摘要： MYB family proteins regulate a variety of cellular processes in plants. Tapping panel dryness (TPD) in rubber tree (Hevea brasiliensis Muell. Arg.) affects latex biosynthesis and causes serious losses to rubber producers. In this study, a novel SANT/MYB transcription factor gene down-regulated in TPD rubber tree, named as HbSM1, was isolated from rubber tree. The complete HbSM1 open reading frame (ORF) was 948 bp in length. The deduced HbSM1 protein is 315 amino acids. HbSM1 belonged to 1RMYB subfamily with a single SANT domain. Sequence alignment revealed that HbSM1 had high homology with MYB members from Ricinus communis and Manihot esculenta, with 72 and 78 % identity, respectively. Moreover, HbSM1 shared 56 % identity with Glycine max GmMYB176. Phylogenetic analysis revealed that HbSM1, GmMYB176, rice OsMYBS2, and OsMYBS3 fell into the same cluster with 93 % bootstrap support value. Comparing expression among different tissues demonstrated that HbSM1 was ubiquitously expressed in all tissues, but it appeared to be preferentially expressed in leaf and latex. Furthermore, HbSM1 transcripts were significantly induced by various phytohormones (including gibberellic acid, ethephon, methyl jasmonate, salicylic acid, and abscisic acid) and wounding treatments. These results suggested that HbSM1 might play multiple roles in plant development via different phytohormones signaling pathways.

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[1]Association of decreased expression of a Myb transcription factor with the TPD (tapping panel dryness) syndrome in Hevea brasiliensis. Chen, SC,Peng, SQ,Huang, GX,Wu, KX,Fu, XH,Chen, ZQ.

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[7]Transcriptome-Wide Identification and Characterization of MYB Transcription Factor Genes in the Laticifer Cells of Hevea brasiliensis. Wang, Ying,Zhan, Di-Feng,Li, Hui-Liang,Guo, Dong,Zhu, Jia-Hong,Peng, Shi-Qing,Zhan, Di-Feng. 2017

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[20]Effects of powdery mildew infection on chloroplast and mitochondrial functions in rubber tree. Wang, Li-Feng,Wang, Meng,Zhang, Yu.

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