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MAX4 and RMS1 are orthologous dioxygenase-like genes that regulate shoot branching in Arabidopsis and Pea

Sorefan, K., Booker, J., Haurogné, K., Goussot, M., Bainbridge, K., Foo, E., Chatfield, S., Ward, S., Beveridge, C., Rameau, C. and Leyser, O. (2003) MAX4 and RMS1 are orthologous dioxygenase-like genes that regulate shoot branching in Arabidopsis and Pea. Genes and Development, 17 (12). pp. 1469-1474. ISSN 0890-9369

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Abstract

Shoot branching is inhibited by auxin transported down the stem from the shoot apex. Auxin does not accumulate in inhibited buds and so must act indirectly. We show that mutations in the MAX4 gene of Arabidopsis result in increased and auxin-resistant bud growth. Increased branching in max4 shoots is restored to wild type by grafting to wild-type rootstocks, suggesting that MAX4 is required to produce a mobile branch-inhibiting signal, acting downstream of auxin. A similar role has been proposed for the pea gene, RMS1. Accordingly, MAX4 and RMS1 were found to encode orthologous, auxin-inducible members of the polyene dioxygenase family.

Item Type: Article
Keywords: Auxin; Arabidopsis; CCD; pea; shoot branching
Academic Units: The University of York > Biology (York)
Depositing User: York RAE Import
Date Deposited: 03 Sep 2009 09:27
Last Modified: 03 Sep 2009 09:35
Published Version: http://dx.doi.org/10.1101/gad.256603
Status: Published
Publisher: Elsevier
Identification Number: 10.1101/gad.256603
URI: http://eprints.whiterose.ac.uk/id/eprint/6128

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