Wang Shucai, Chen Jin-Gui
Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University Changchun, China.
Biosciences Division, Oak Ridge National Laboratory Oak Ridge, TN, USA.
Front Plant Sci. 2014 Apr 8;5:133. doi: 10.3389/fpls.2014.00133. eCollection 2014.
MYB transcription factors regulate multiple aspects of plant growth and development. Among the large family of MYB transcription factors, single-repeat R3 MYBs are characterized by their short sequence (<120 amino acids) consisting largely of the single MYB DNA-binding repeat. In the model plant Arabidopsis, R3 MYBs mediate lateral inhibition during epidermal patterning and are best characterized for their regulatory roles in trichome and root hair development. R3 MYBs act as negative regulators for trichome formation but as positive regulators for root hair development. In this article, we provide a comprehensive review on the role of R3 MYBs in the regulation of cell type specification in the model plant Arabidopsis.
MYB转录因子调控植物生长发育的多个方面。在庞大的MYB转录因子家族中，单重复R3 MYB的特点是其序列较短（<120个氨基酸），主要由单个MYB DNA结合重复序列组成。在模式植物拟南芥中，R3 MYB在表皮模式形成过程中介导侧向抑制作用，并且因其在毛状体和根毛发育中的调控作用而最为人所知。R3 MYB作为毛状体形成的负调控因子，但作为根毛发育的正调控因子。在本文中，我们全面综述了R3 MYB在模式植物拟南芥细胞类型特化调控中的作用。
