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Expression of maize KNOTTED1 related homeobox genes in the shoot apical meristem predicts patterns of morphogenesis in the vegetative shoot
Abstract
In this paper we describe the expression patterns of a family of homeobox genes in maize and their relationship to organogenic domains in the vegetative shoot apical meristem. These genes are related by sequence to KNOTTED1, a gene characterized by dominant neomorphic mutations which perturb specific aspects of maize leaf development. Four members of this gene family are expressed in shoot meristems and the developing stem, but not in determinate lateral organs such as leaves or floral organs. The genes show distinct expression patterns in the vegetative shoot apical meristem that together predict the site of leaf initiation and the basal limit of the vegetative ‘phytomer’ or segmentation unit of the shoot. These genes are also expressed in the inflorescence and floral meristems, where their patterns of expression are more similar, and they are not expressed in root apical meristems. These findings are discussed in relation to other studies of shoot apical meristem organization as well as possible commonality of homeobox gene function in the animal and plant kingdoms.
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A member of the KNOTTED class of homeodomain proteins encoded by the STM gene of Arabidopsis
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The Lateral Organ Boundaries Gene Defines a Novel, Plant-Specific Gene Family
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KNAT1 induces lobed leaves with ectopic meristems when overexpressed in Arabidopsis.
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Self-citationLAX and SPA : Major regulators of shoot branching in rice
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Initiation of Axillary and Floral Meristems in Arabidopsis
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Phillips, K. A., Skirpan, A. L., Liu, X., Christensen, A., Slewinski, T. L., Hudson, C., Barazesh, S., Cohen, J. D., Malcomber, S., & McSteen, P. (2011) · The Plant Cell · doi:10.1105/tpc.110.075267 · Cited by 286
grassy tillers1 promotes apical dominance in maize and responds to shade signals in the grasses
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Self-citationThe Relationship between Auxin Transport and Maize Branching
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Self-citationThe maize mutant barren stalk1 is defective in axillary meristem development
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Gene expression patterns in seed plant shoot meristems and leaves: homoplasy or homology?
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The role of auxin transport during inflorescence development in maize (Zea mays, Poaceae)
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Metadata
- Authors
- Jackson, D., Veit, B., & Hake, S.
- Venue
- Development
- Publisher
- The Company of Biologists
- Published
- 1994-02-01
- Volume
- 120
- Issue
- 2
- Pages
- 405-413
- ISSN
- 0950-1991 (ISSN-L)
- 1477-9129
- OpenAlex
- W1873185334
- Cited by
- 754
- References
- 0
- FWCI
- 42.23
- Type
- journal article
- Language
- en
- Open access
- closed
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