Plant Mol Biol (2017) 93:299–311 DOI 10.1007/s11103-016-0562-8 Two MYB-related transcription factors play opposite roles in sugar signaling in Arabidopsis 1 1 1 1 1 Yi-Shih Chen · Yi-Chi Chao · Tzu-Wei Tseng · Chun-Kai Huang · Pei-Ching Lo · Chung-An Lu Received: 24 May 2016 / Accepted: 10 November 2016 / Published online: 19 November 2016 © Springer Science+Business Media Dordrecht 2016 Abstract and MYBS2, were investigated in Arabidopsis. Subcellu- Key message Sugar regulation of gene expression has lar localization analysis showed that MYBS1 and MYBS2 profound effects at all stages of the plant life cycle. were localized in the nucleus. Rice embryo transient Although regulation at the transcriptional level is one expression assays indicated that both MYBS1 and MYBS2 of the most prominent mechanisms by which gene could recognize the sugar response element, TA-box, in expression is regulated, only a few transcription factors the promoter and induced promoter activity. mybs1 mutant have been identified and demonstrated to be involved exhibited hypersensitivity to glucose, whereas mybs2 seed- in the regulation of sugar-regulated gene expression. lings were hyposensitive to it. MYBS1 and MYBS2 are OsMYBS1, an R1/2-type MYB transcription factor, involved in the control of glucose-responsive gene expres- has been demonstrated to be involved in sugar- and sion,
Plant Molecular Biology – Springer Journals
Published: Nov 19, 2016
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