期刊
GENOME BIOLOGY AND EVOLUTION
卷 6, 期 5, 页码 1166-1173出版社
OXFORD UNIV PRESS
DOI: 10.1093/gbe/evu087
关键词
Tmesipteris; Dicksonia; ferns and fern allies; chloroplast genomes; generation time effect; mutation rates
资金
- NZ Marsden Fund
We report the chloroplast genomes of a tree fern (Dicksonia squarrosa) and a fern ally (Tmesipteris elongata), and show that the phylogeny of early land plants is basically as expected, and the estimates of divergence time are largely unaffected after removing the fastest evolving sites. The tree fern shows the major reduction in the rate of evolution, and there has been a major slowdown in the rate of mutation in both families of tree ferns. We suggest that this is related to a generation time effect; if there is a long time period between generations, then this is probably incompatible with a high mutation rate because otherwise nearly every propagule would probably have several lethal mutations. This effect will be especially strong in organisms that have large numbers of cell divisions between generations. This shows the necessity of going beyond phylogeny and integrating its study with other properties of organisms.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据