Isolation and Characterization of New MIKC-Type MADS-Box Genes from the Moss Physcomitrella patens

Abstract MADS-box genes encode for a large family of transcription-regulating proteins, which were isolated from all groups of eukaryotic organisms. The plant-specific MIKC-type MADS-box genes have been intensively analyzed for their roles in controlling developmental processes. Well-known are the M...

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Published in:Plant biology (Stuttgart, Germany) Germany), 2005-05, Vol.7 (3), p.307-314
Main Authors: Riese, M., Faigl, W., Quodt, V., Verelst, W., Matthes, A., Saedler, H., Münster, T.
Format: Article
Language:English
Subjects:
Amino Acid Sequence
Base Sequence
Bryopsida - classification
Bryopsida - genetics
Chromosome Mapping
Cloning, Molecular
DNA Primers
DNA, Complementary
DNA, Plant - genetics
DNA, Plant - isolation & purification
evolution
Genome, Plant
MADS Domain Proteins - genetics
MADS-box gene
MIKC-type
Molecular Sequence Data
moss
Phylogeny
Physcomitrella patens
Plant Proteins - genetics
Research Paper
Reverse Transcriptase Polymerase Chain Reaction
Sequence Alignment
Sequence Homology, Amino Acid
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Summary:Abstract MADS-box genes encode for a large family of transcription-regulating proteins, which were isolated from all groups of eukaryotic organisms. The plant-specific MIKC-type MADS-box genes have been intensively analyzed for their roles in controlling developmental processes. Well-known are the MADS-box genes acting as homeotic selector genes in the differentiation of whorls of floral organs in seed plants. The MADS-box gene family has also been studied in non-flowering plants, such as lycophytes, pteridophytes, and bryophytes. The analysis of MADS-box genes in the moss PHYSCOMITRELLA PATENS led to the identification of a new class of MIKC-type genes, designated as MIKC*-type genes. The MIKC*-type genes possess a number of structural features which clearly distinguish them from the already known MIKC-type genes. Recently, orthologues of the PHYSCOMITRELLA MIKC*-type genes were found in ARABIDOPSIS THALIANA, demonstrating the conservation of these genes in tracheophytes. Here, we report the isolation of two new MIKC*-type MADS-box genes from PHYSCOMITRELLA. Structural features and expression patterns of these genes were analyzed. The contribution of our findings to a better understanding of the evolution of MIKC*-type genes in land plants is discussed.
ISSN:1435-8603
1438-8677
DOI:10.1055/s-2005-865640