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dc.contributor.authorCai, Q.en
dc.contributor.authorYuan, Z.en
dc.contributor.authorChen, M.en
dc.contributor.authorYin, C.en
dc.contributor.authorLuo, Z.en
dc.contributor.authorZhao, X.en
dc.contributor.authorLiang, W.en
dc.contributor.authorHu, J.en
dc.contributor.authorZhang, D.en
dc.identifier.citationNature Communications, 2014; 5(1):3476-1-3476-13en
dc.descriptionPublished 19 March 2014en
dc.description.abstractThe spikelet is the basal unit of inflorescence in grasses, and its formation is crucial for reproductive success and cereal yield. Here, we report a previously unknown role of the plant hormone jasmonic acid (JA) in determining rice (Oryza sativa) spikelet morphogenesis. The extra glume 1 (eg1) and eg2 mutants exhibit altered spikelet morphology with changed floral organ identity and number, as well as defective floral meristem determinacy. We show that EG1 is a plastid-targeted lipase that participates in JA biosynthesis, and EG2/OsJAZ1 is a JA signalling repressor that interacts with a putative JA receptor, OsCOI1b, to trigger OsJAZ1's degradation during spikelet development. OsJAZ1 also interacts with OsMYC2, a transcription factor in the JA signalling pathway, and represses OsMYC2's role in activating OsMADS1, an E-class gene crucial to the spikelet development. This work discovers a key regulatory mechanism of grass spikelet development and suggests that the role of JA in reproduction has diversified during the flowering plant evolution.en
dc.description.statementofresponsibilityQiang Cai, Zheng Yuan, Mingjiao Chen, Changsong Yin, Zhijing Luo, Xiangxiang Zhao, Wanqi Liang, Jianping Hu and Dabing Zhangen
dc.publisherNature Publishing Groupen
dc.rights© 2014 Macmillan Publishers Limited. All rights reserved.en
dc.subjectOryza sativaen
dc.titleJasmonic acid regulates spikelet development in riceen
dc.typeJournal articleen
pubs.library.collectionAgriculture, Food and Wine publicationsen
dc.identifier.orcidZhang, D. [0000-0003-3181-9812]en
Appears in Collections:Agriculture, Food and Wine publications

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