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  Molecular analysis of the LATERAL SUPPRESSOR gene in Arabidopsis reveals a conserved control mechanism for axillary meristem formation

Greb, T., Clarenz, O., Schafer, E., Mueller, D., Herrero, R., Schmitz, G., et al. (2003). Molecular analysis of the LATERAL SUPPRESSOR gene in Arabidopsis reveals a conserved control mechanism for axillary meristem formation. Genes & Development, 17(9), 1175-1187.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3CD1-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3CD2-7
Genre: Journal Article

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 Creators:
Greb, T.1, Author              
Clarenz, O., Author
Schafer, E., Author
Mueller, D.2, Author              
Herrero, R., Author
Schmitz, G.2, Author              
Theres, K.2, Author              
Affiliations:
1Dept. of Plant Breeding and Yield Physiology (Francesco Salamini), MPI for Plant Breeding Research, Max Planck Society, ou_1113570              
2Dept. of Plant Breeding and Genetics (Maarten Koornneef), MPI for Plant Breeding Research, Max Planck Society, ou_1113569              

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Free keywords: shoot branching; axillary meristem; LATERAL SUPPRESSOR; Arabidopsis thaliana
 Abstract: In seed plants, shoot branching is initiated by the formation of new meristems in the axils of leaves, which subsequently develop into new axes of growth. This study describes the genetic control of axillary meristem formation by the LATERAL SUPPRESSOR (LAS) gene in Arabidopsis thaliana.]as mutants show a novel phenotype that is characterized by the inability to form lateral shoots during vegetative development. The analysis shows that axillary meristem formation is differently regulated during different phases of development. During reproductive development, axillary meristems initiate in close proximity to the shoot apical meristem and do not require LAS function. In contrast, during the vegetative phase, axillary meristems initiate at a distance to the SAM and require LAS function. This control mechanism is conserved between the distantly related species tomato and Arabidopsis. Monitoring the patterns of LAS and SHOOT MERISTEMLESS transcript accumulation allowed us to identify early steps in the development of leaf axil identity, which seem to be a prerequisite for axillary meristem initiation. Other regulators of shoot branching, like REVOLUTA and AUXIN RESISTANT 1, act downstream of LAS. The results are discussed in the context of the "detached meristem" and the "de novo formation" concepts of axillary meristem formation.

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Language(s): eng - English
 Dates: 2003-05-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 28834
ISI: 000182671500011
 Degree: -

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Title: Genes & Development
  Alternative Title : Genes Dev.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 17 (9) Sequence Number: - Start / End Page: 1175 - 1187 Identifier: ISSN: 0890-9369