Molecular evolution of flower development: diversification of the plant MADS-box regulatory gene family

Floral homeotic genes that control the specification of meristem and organ identity developing flowers have been isolated from both Arabidopsis thaliana and Antirrhinum majus. Most of these genes belong to a large family of regulatory genes and possess a characteristic DNA binding domain known as th...

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Bibliographic Details
Published in:Genetics (Austin) 1995-05, Vol.140 (1), p.345-356
Main Authors: Purugganan, M.D. (University of California at San Diego, La Jolla, CA.), Rounsley, S.D, Schmidt, R.J, Yanofsky, M.F
Format: Article
Language:English
Subjects:
ADN
Amino Acid Sequence
ANTIRRHINUM
Antirrhinum majus
ARABIDOPSIS THALIANA
Binding Sites
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
DNA, Plant - genetics
Evolution
FILOGENIA
Flowers & plants
GENE
Gene Expression Regulation, Developmental
GENES
Genes, Homeobox
Genes, Plant
Genes, Regulator
Genetics
Investigations
Molecular Sequence Data
Morphogenesis - genetics
PHYLOGENIE
Phylogeny
Plant Development
Plants - genetics
PROTEINAS
PROTEINE
Regulatory Sequences, Nucleic Acid
SECUENCIA NUCLEICA
Sequence Alignment
Sequence Homology, Amino Acid
SEQUENCE NUCLEIQUE
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Summary:Floral homeotic genes that control the specification of meristem and organ identity developing flowers have been isolated from both Arabidopsis thaliana and Antirrhinum majus. Most of these genes belong to a large family of regulatory genes and possess a characteristic DNA binding domain known as the MADS-box. Members of this gene family display primarily floral-specific expression and are homologous to transcription factors found in several animal and fungal species. Molecular evolutionary analyses reveal that there are appreciable differences in the substitution rates between different domains of these plant MADS-box genes. Phylogenetic analyses also demonstrate that members of the plant MADS-box gene family are organized into several distinct gene groups: the ACAMOUS, APETALA3/PISTILLATA and APETALA1/AGL9 groups. The shared evolutionary history of members of a gene group appear to reflect the distinct functional roles these MADS-box genes play in flower development. Molecular evolutionary analyses also suggest that these different gene groups were established in a relatively short span of evolutionary time and that the various floral homeotic loci originated even before the appearance of the flowering plants
ISSN:0016-6731
1943-2631
1943-2631
DOI:10.1093/genetics/140.1.345