Evolutionary and polymorphic organization of the knotted1 homeobox in cereals

Homeobox genes are the master control genes harbouring the homeobox which is crucial for developmental associated functions. One homeobox gene, knotted1, which has a role in leaf development, is conserved in plants and might have arisen from a single ancestral gene. Using PCR, we identified multiple...

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Bibliographic Details
Published in:Theoretical and applied genetics 1998-07, Vol.97 (1/2), p.135-140
Main Authors: Deshpande, A.D, Ramakrishna, W, Mulay, G.P, Gupta, V.S, Ranjekar, P.K
Format: Article
Language:English
Subjects:
Biological and medical sciences
Classical genetics, quantitative genetics, hybrids
duplication
Fundamental and applied biological sciences. Psychology
Genes
Genetic aspects
genetic polymorphism
Genetic polymorphisms
genetic regulation
Genetics of eukaryotes. Biological and molecular evolution
Grain
Homeobox genes
homeoboxes
Homeotic genes
introns
kn1 gene
leaves
nucleic acid hybridization
Oryza sativa
phylogeny
Physiological aspects
plant development
Plant genetics
Poaceae
Pteridophyta, spermatophyta
Southern blotting
Vegetals
wild relatives
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Summary:Homeobox genes are the master control genes harbouring the homeobox which is crucial for developmental associated functions. One homeobox gene, knotted1, which has a role in leaf development, is conserved in plants and might have arisen from a single ancestral gene. Using PCR, we identified multiple kn1 homeoboxes in diverse cereals and showed a cereal/ species-specific organization correlating them to evolutionary changes. We postulate the insertion of a large intron preceded by duplication of the kn1 homeobox in the lineage leading to rice.
ISSN:0040-5752
1432-2242
DOI:10.1007/s001220050877