Proceedings of Fukuoka International Symposium on Population Genetics--Comparative genomics of chalcone synthase and Myb genes in the grass family
-
- Oberholzer Virginia
- Department of Botany & Plant Sciences University of California
-
- Durbin Mary L.
- Department of Botany & Plant Sciences University of California
-
- Clegg Michael T.
- Department of Botany & Plant Sciences University of California
書誌事項
- タイトル別名
-
- Comparative genomics of chalcone synthase and Myb genes in the grass family.
この論文をさがす
抄録
Most plant genes occur as members of multigene families where new copies arise through duplication. Duplicate genes that do not confer an adaptive advantage to the plant are expected to rapidly erode into pseudogenes owing to the accumulation of transpositions, insertion/deletion mutations and nucleotide changes. Nonfunctional copies will drift to fixation within a few million years and ultimately erode beyond recognition. Duplicate genes that are retained over longer periods of evolutionary time must be positively selected based on some adaptive advantage conferred on the plant species. We explore the dynamics of the recruitment of new duplicate genes for chalcone synthase, the enzyme that catalyzes the first committed step of flavonoid biosynthesis, and for the myb family of transcriptional activators. Our analyses show that new chs genes are recruited into the genome of grasses at a rate of one new copy every 15 to 25 million years. In contrast, the myb gene family is much older and many duplicate copies appear to predate the separation of the angiosperm lineage from other seed plants. The general pattern suggests a rapid adaptive proliferation of new chs genes but a more ancient elaboration of regulatory gene functions. Our analyses also reveal accelerated rates of protein evolution following gene duplication and evidence is presented for interlocus exchange among duplicate gene loci.<br>
収録刊行物
-
- Genes & Genetic Systems
-
Genes & Genetic Systems 75 (1), 1-16, 2000
日本遺伝学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282680422411392
-
- NII論文ID
- 10004957086
-
- NII書誌ID
- AA11077421
-
- DOI
- 10.1266/ggs.75.1
-
- COI
- 1:CAS:528:DC%2BD3cXktVGqt7o%3D
-
- ISSN
- 18805779
- 13417568
-
- NDL書誌ID
- 5337239
-
- PubMed
- 10846616
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可