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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lee, Shinyoung Ma, Hong Kim, Joonyul Nam, Jongmin An, Gynheung Nei, Masatoshi |
| Description | Author Affiliation: Nam J ( Institute of Molecular Evolutionary Genetics and Department of Biology, Pennsylvania State University, University Park, PA 16802, USA.); |
| Abstract | Plant MADS-box genes form a large gene family for transcription factors and are involved in various aspects of developmental processes, including flower development. They are known to be subject to birth-and-death evolution, but the detailed features of this mode of evolution remain unclear. To have a deeper insight into the evolutionary pattern of this gene family, we enumerated all available functional and nonfunctional (pseudogene) MADS-box genes from the Arabidopsis and rice genomes. Plant MADS-box genes can be classified into types I and II genes on the basis of phylogenetic analysis. Conducting extensive homology search and phylogenetic analysis, we found 64 presumed functional and 37 nonfunctional type I genes and 43 presumed functional and 4 nonfunctional type II genes in Arabidopsis. We also found 24 presumed functional and 6 nonfunctional type I genes and 47 presumed functional and 1 nonfunctional type II genes in rice. Our phylogenetic analysis indicated there were at least about four to eight type I genes and approximately 15-20 type II genes in the most recent common ancestor of Arabidopsis and rice. It has also been suggested that type I genes have experienced a higher rate of birth-and-death evolution than type II genes in angiosperms. Furthermore, the higher rate of birth-and-death evolution in type I genes appeared partly due to a higher frequency of segmental gene duplication and weaker purifying selection in type I than in type II genes. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 7 |
| Volume Number | 101 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2004-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Angiosperms Genetics Evolution, Molecular Genes, Plant MADS Domain Proteins Arabidopsis Genome, Plant Oryza Sativa Phylogeny Plant Proteins Protein Structure, Tertiary Pseudogenes Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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