An R2R3-type myeloblastosis transcription factor MYB103 is involved in phosphorus remobilization

文献类型： 外文期刊

第一作者： Yu, Fangwei

作者： Yu, Fangwei;Wang, Shenyun;Zhang, Wei;Wang, Hong;Yu, Li;Li, Jianbin;Fei, Zhangjun

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关键词： Brassica oleracea var; capitata L; Arabidopsis thaliana; Cell wall; Ethylene; Phosphorus; MYB103

期刊名称：FOOD PRODUCTION PROCESSING AND NUTRITION （ 影响因子：4.7； 五年影响因子：5.0 ）

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年卷期： 2020 年 2 卷 1 期

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收录情况： SCI

摘要： The members of myeloblastosis transcription factor (MYB TF) family are involved in the regulation of biotic and abiotic stresses in plants. However, the role of MYB TF in phosphorus remobilization remains largely unexplored. In the present study, we show that an R2R3 type MYB transcription factor, MYB103, is involved in phosphorus (P) remobilization. MYB103 was remarkably induced by P deficiency in cabbage (Brassica oleracea var. capitata L.). As cabbage lacks the proper mutant for elucidating the mechanism of MYB103 in P deficiency, another member of the crucifer family, Arabidopsis thaliana was chosen for further study. The transcript of its homologue AtMYB103 was also elevated in response to P deficiency in A. thaliana, while disruption of AtMYB103 (myb103) exhibited increased sensitivity to P deficiency, accompanied with decreased tissue biomass and soluble P concentration. Furthermore, AtMYB103 was involved in the P reutilization from cell wall, as less P was released from the cell wall in myb103 than in wildtype, coinciding with the reduction of ethylene production. Taken together, our results uncover an important role of MYB103 in the P remobilization, presumably through ethylene signaling.

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