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SUPERMAN regulates floral whorl boundaries through control of auxin biosynthesis

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dc.contributor.author Xu, Yifeng en
dc.contributor.author Prunet, Nathanael en
dc.contributor.author Gan, Eng‐Seng ja
dc.contributor.author Wang, Yanbin en
dc.contributor.author Stewart, Darragh en
dc.contributor.author Wellmer, Frank en
dc.contributor.author Huang, Jiangbo en
dc.contributor.author Yamaguchi, Nobutoshi en
dc.contributor.author Tatsumi, Yoshitaka en
dc.contributor.author Kojima, Mikiko en
dc.contributor.author Kiba, Takatoshi en
dc.contributor.author Sakakibara, Hitoshi en
dc.contributor.author Jack, Thomas P en
dc.contributor.author Meyerowitz, Elliot M en
dc.contributor.author Ito, Toshiro en
dc.date.accessioned 2018-05-21T06:53:37Z en
dc.date.available 2018-05-21T06:53:37Z en
dc.date.issued 2018-05-15 en
dc.identifier.issn 1460-2075 en
dc.identifier.uri http://hdl.handle.net/10061/12552 en
dc.description.abstract Proper floral patterning, including the number and position of floral organs in most plant species, is tightly controlled by the precise regulation of the persistence and size of floral meristems (FMs). In Arabidopsis, two known feedback pathways, one composed of WUSCHEL (WUS) and CLAVATA3 (CLV3) and the other composed of AGAMOUS (AG) and WUS, spatially and temporally control floral stem cells, respectively. However, mounting evidence suggests that other factors, including phytohormones, are also involved in floral meristem regulation. Here, we show that the boundary gene SUPERMAN (SUP) bridges floral organogenesis and floral meristem determinacy in another pathway that involves auxin signaling. SUP interacts with components of polycomb repressive complex 2 (PRC2) and fine‐tunes local auxin signaling by negatively regulating the expression of the auxin biosynthesis genes YUCCA1/4 (YUC1/4). In sup mutants, derepressed local YUC1/4 activity elevates auxin levels at the boundary between whorls 3 and 4, which leads to an increase in the number and the prolonged maintenance of floral stem cells, and consequently an increase in the number of reproductive organs. Our work presents a new floral meristem regulatory mechanism, in which SUP, a boundary gene, coordinates floral organogenesis and floral meristem size through fine‐tuning auxin biosynthesis. ja
dc.language.iso en en
dc.publisher EMBO en
dc.subject auxin en
dc.subject floral meristem en
dc.subject floral organogenesis en
dc.subject H3K27me3 en
dc.subject polycomb repressive complexes en
dc.subject SUPERMAN en
dc.title SUPERMAN regulates floral whorl boundaries through control of auxin biosynthesis en
dc.type.nii Journal Article en
dc.contributor.transcription イトウ, トシロウ ja
dc.contributor.alternative 伊藤, 寿朗 ja
dc.textversion author en
dc.identifier.abstracturl http://emboj.embopress.org/content/early/2018/05/14/embj.201797499.abstract en
dc.identifier.ncid AA12024602 en
dc.identifier.jtitle The EMBO Journal en
dc.relation.doi 10.15252/embj.201797499 en
dc.identifier.NAIST-ID 74651431 en
dc.relation.pmid 29764982 en


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