| Abstract Detail
Recent Topics Posters Schulz, Christian [1], Little, Damon [2], Brenner, Eric [3], Stevenson, Dennis Wm. [4]. Identity genes for male and female organs in Cryptograms: preliminary investigations in MADS-box genes in the lycophyte Selaginella. MADS-box genes encode transcription factors which play an import role in developmental control in plants. Some plant MADS-box gene groups such as B- and C-class genes function as male and female organ identity genes. Gymnosperms and angiosperms may have homologous organ identity genes. Extensive studies of MADS-box genes in angiosperms have undertaken and a few functional comparison between other land plants have been made. Whereas organ identity genes are poorly understand in cryptograms, preliminary investigations have shown that the lycophyte, Selaginella, has at least 18 MADS-box genes distributed in three clades – genes from the fern Ceratopteris and the moss Physomitrella are also found in these clades. If the male and female identity genes in Cryptograms are encoded by MADS-box genes, one of these clades may represent organ identity genes. Further investigation is needed to determine the connection between the organ identity genes of stamen/carpel in angiosperms and identity genes of the sporangia in ferns and lycophytes.
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1 - The New York Botanical Garden, Gymnosperm Genomics Project, 2900 Southern Blvd., Bronx, New York, 10458, United States
2 - The New York Botanical Garden, Lewis B. and Dorothy Cullman Program for Molecular Systematic Studies, 200th St. & Southern Blvd., Bronx, New York, 10458-5126, USA
3 - The New York Botanical Garden, Genomics, 200th St. and Kazimiroff Blvd, Bronx, New York, 10458, USA
4 - New York Botanical Garden, Institute of Systematic Botany, 200Th Street & Southern Boulevard, Bronx, New York, 10458-5126, USA
Keywords:
MADS-box gene
MADS genes
selaginella
Physomitrella
sporangia
organ identity
phylogenetic tree
cryptograms
evolution
evo-devo
Evolutionary Developmental Genetics.
Presentation Type: Recent Topics Poster
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P79026
Abstract ID:2657 |
