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LEAFY Controls Auxin Response Pathways in Floral Primordium Formation

Li, Wuxing and Zhou, Yun and Liu, Xing and Yu, Peng and Cohen, Jerry D. and Meyerowitz, Elliot M. (2013) LEAFY Controls Auxin Response Pathways in Floral Primordium Formation. Science Signaling, 6 (270). Art. No. ra23. ISSN 1937-9145. PMCID PMC4122305.

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The transcription factor LEAFY is a master regulator of flowering and of flower development. It acts as a component of a switch that mediates the transition from the vegetative to the reproductive phase of plant development. Auxin is a plant hormone with many different roles in plant growth, including the induction of new primordia of both leaves and flowers at the shoot apex. We report that LEAFY acts in part by controlling the auxin response pathway in new primordia. Therefore, regulation of flower development by transcriptional master regulators and hormonal control of morphogenesis appear to be interacting processes. We found that hormone perception not only controls but is also controlled by the transcriptional signals that create plant form.

Item Type:Article
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URLURL TypeDescription;6/270/ra23?view=abstractPublisherArticle CentralArticle
Liu, Xing0000-0002-0506-6821
Meyerowitz, Elliot M.0000-0003-4798-5153
Additional Information:© 2013 American Association for the Advancement of Science. Submitted 3 January 2013; Accepted 15 March 2013; Final Publication 9 April 2013. We thank the members of the Meyerowitz laboratory for comments and discussion. We thank A. Roeder for technical assistance with mapping, Z. Nimchuk for technical assistance with construct preparation, V. Chickarmane for assistance in statistical analysis, M. Heisler for technical assistance with imaging, and A. Garda for plant care. We thank Y. Watanabe for the pTA7002 binary vector and The Arabidopsis Information Resource (TAIR) for essential genome information. Funding: Work at the California Institute of Technology was supported by the Department of Energy Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences grant DE-FG02-88ER13873 (E.M.M.). Work at the University of Minnesota was supported by the NSF (grants MCB-0725149, IOS-PGRP-0923960, IOS-PGRP-1238812, and MCB-1203438), the Minnesota Agricultural Experiment Station, and the Gordon and Margaret Bailey Endowment for Environmental Horticulture. Author contributions: W.L. and E.M.M. conceived the project; W.L., Y.Z., X.L., and P.Y. performed the experiments; and W.L. and E.M.M. wrote the manuscript. X.L. and J.D.C. developed the method for auxin analysis, and J.D.C. reviewed the mass spectral data and interpreted the analytical results. Competing interests: The authors declare that they have no competing interests. Data and materials availability: Requests for materials should be addressed to E.M.M.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-88ER13873
NSFIOS-PGRP- 0923960
Minnesota Agricultural Experiment StationUNSPECIFIED
Gordon and Margaret Bailey Endowment for Environmental HorticultureUNSPECIFIED
Issue or Number:270
PubMed Central ID:PMC4122305
Record Number:CaltechAUTHORS:20130509-105151392
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:38386
Deposited By: Jason Perez
Deposited On:09 May 2013 18:39
Last Modified:09 Mar 2020 13:19

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