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Title: MOTHER OF FT and TFL1 regulates seed germination and fertility relevant to the brassinosteroid signaling pathway
Authors: Xi, W.
Yu, H. 
Keywords: Abscisic acid
Seed germination
Issue Date: Oct-2010
Citation: Xi, W., Yu, H. (2010-10). MOTHER OF FT and TFL1 regulates seed germination and fertility relevant to the brassinosteroid signaling pathway. Plant Signaling and Behavior 5 (10) : 1315-1317. ScholarBank@NUS Repository.
Abstract: Brassinosteroids (BRs) are a family of plant steroid hormones that play diverse roles in many aspects of plant growth and development. For example, BRs promote seed germination by counteracting the inhibitory effect of ABA and regulate plant reproductive development, thus affecting seed yield. We have recently reported that MOTHER OF FT AND TFL1 (MFT) regulates seed germination through a negative feedback loop modulating ABA signaling in Arabidopsis. Here, we show that MFT function is also relevant to the BR signaling pathway. In mft loss-of-function mutants, the application of BR could not fully antagonize the inhibitory effect of exogenous ABA on seed ermination, suggesting that BR promotes seed germination against ABA partly through MFT. In addition, mft enhances the lowfertility phenotype of det2 in which BR biosynthesis is blocked. This phenotype, together with the observation that MFT is expressed in gametophytes and developing seeds, suggests that MFT and BR play redundant roles in regulating fertility. Therefore, these results suggest that MFT affects seed germination and fertility relevant to the BR signaling pathway. © 2010 Landes Bioscience.
Source Title: Plant Signaling and Behavior
ISSN: 15592316
DOI: 10.4161/psb.5.10.13161
Appears in Collections:Staff Publications

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