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http://purl.uniprot.org/citations/12949148http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/12949148http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/12949148http://www.w3.org/2000/01/rdf-schema#comment"MADS-box genes encode transcription factors involved in various important aspects of development and differentiation in land plants, metazoans, and other organisms. Three types of land plant MADS-box genes have been reported. MIKCC- and MIKC*-type genes both contain conserved MADS and K domains but have different exon/intron structures. M-type genes lack a K domain. Most MADS-box genes previously analyzed in land plants are expressed in the sporophyte (diploid plant body); few are expressed in the gametophyte (haploid plant body). Land plants are believed to have evolved from a gametophyte (haploid)-dominant ancestor without a multicellular sporophyte (diploid plant body); most genes expressed in the sporophyte probably originated from those used in the gametophyte during the evolution of land plants. To analyze the evolution and diversification of MADS-box genes in land plants, gametophytic MADS-box genes were screened using macroarray analyses for 105 MADS-box genes found in the Arabidopsis genome. Eight MADS-box genes were predominantly expressed in pollen, the male gametophyte; all but one of their expression patterns was confirmed by Northern analyses. Analyses of the exon/intron structure of these seven genes revealed that they included two MIKCC-type, one M-type, and four MIKC*-type MADS-box genes. Previously, MIKC*-type genes have been reported only from a moss and a club moss, and this is the first record in seed plants. These genes can be used to investigate the unknown ancestral functions of MADS-box genes in land plants. The macroarray analyses did not detect expression of 56 of 61 M-type MADS-box genes in any tissues examined. A phylogenetic tree including all three types of Arabidopsis MADS-box genes with representative genes from other organisms showed that M-type genes were polyphyletic and that their branch lengths were much longer than for the other genes. This finding suggests that most M-type genes are pseudogenes, although further experiments are necessary to confirm this possibility. Our global phylogenetic analyses of MADS-box genes did not support the previous classification of MADS-box genes into type I and II groups, based on smaller scale analyses. An evolutionary scenario for the evolution of MADS-box genes in land plants is discussed."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.org/dc/terms/identifier"doi:10.1093/molbev/msg216"xsd:string
http://purl.uniprot.org/citations/12949148http://purl.org/dc/terms/identifier"doi:10.1093/molbev/msg216"xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Ito M."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Ito M."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Kondo K."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Kondo K."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Ueda K."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Ueda K."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Yamasaki M."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Yamasaki M."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Hasebe M."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Hasebe M."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Kofuji R."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Kofuji R."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Sumikawa N."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/author"Sumikawa N."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/date"2003"xsd:gYear
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/date"2003"xsd:gYear
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/name"Mol. Biol. Evol."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/name"Mol. Biol. Evol."xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/pages"1963-1977"xsd:string
http://purl.uniprot.org/citations/12949148http://purl.uniprot.org/core/pages"1963-1977"xsd:string
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