Type I MADS-box genes have experienced faster birth-and-death evolution than type II MADS-box genes in angiosperms
SCIE
SCOPUS
- Title
- Type I MADS-box genes have experienced faster birth-and-death evolution than type II MADS-box genes in angiosperms
- Authors
- Nam, J; Kim, J; Lee, S; An, GH; Ma, H; Nei, MS
- Date Issued
- 2004-02-17
- Publisher
- NATL ACAD SCIENCES
- 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 approximate to15-20 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12728
- DOI
- 10.1073/pnas.0308430100
- ISSN
- 0027-8424
- Article Type
- Article
- Citation
- PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 101, no. 7, page. 1910 - 1915, 2004-02-17
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