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PMID: 10488233 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Regional expression of the rice KN1-type homeobox gene family during embryo, shoot, and flower development.

The Plant cell ·Vol. 11 ·No. 9 ·1999-09-00 ·Pages 1651-64

Sentoku N, Sato Y, Kurata N, Ito Y, Kitano H, Matsuoka M

Abstract

We report the isolation, sequence, and pattern of gene expression of members of the KNOTTED1 (KN1)-type class 1 homeobox gene family from rice. Phylogenetic analysis and mapping of the rice genome revealed that all of the rice homeobox genes that we have isolated have one or two direct homologs in maize. Of the homeobox genes that we tested, all exhibited expression in a restricted region of the embryo that defines the position at which the shoot apical meristem (SAM) would eventually develop, prior to visible organ formation. Several distinct spatial and temporal expression patterns were observed for the different genes in this region. After shoot formation, the expression patterns of these homeobox genes were variable in the region of the SAM. These results suggest that the rice KN1-type class 1 homeobox genes function cooperatively to establish the SAM before shoot formation and that after shoot formation, their functions differ.

MeSH Terms
Amino Acid Sequence Base Sequence Chromosome Mapping Cloning, Molecular DNA Primers/genetics Gene Expression Regulation, Developmental Gene Expression Regulation, Plant Genes, Homeobox Genes, Plant Homeodomain Proteins/genetics In Situ Hybridization Molecular Sequence Data Multigene Family Oryza/embryology,genetics,growth & development Phylogeny Plant Proteins/genetics Plant Shoots/growth & development RNA, Messenger/genetics,metabolism RNA, Plant/genetics,metabolism Sequence Homology, Amino Acid
Chemicals
DNA Primers Homeodomain Proteins Kn1 protein, plant Plant Proteins RNA, Messenger RNA, Plant
Authors & Affiliations
6 authors, click to expand affiliations / ORCID
Sentoku N
Nagoya University, BioScience Center, Chikusa, Nagoya 464-8601, Japan.
Sato Y
Kurata N
Ito Y
Kitano H
Matsuoka M
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Article Info
Journal
The Plant cell
Abbr.
Plant Cell
ISSN
1040-4651
DOI
10.1105/tpc.11.9.1651
Published
1999-09-00
Pages
1651-64
Language
English
Region
England
NLM ID
9208688
PMCID
PMC144314
Subset
IM
External Links
PubMed source DOI: 10.1105/tpc.11.9.1651 PMC Full Text View journal details
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