Re-analyses of "Algal" Genes Suggest a Complex Evolutionary History of Oomycetes.
Wang, Qia1,2; Sun, Hang1; Huang, Jinling1,3,4
AbstractThe spread of photosynthesis is one of the most important but constantly debated topics in eukaryotic evolution. Various hypotheses have been proposed to explain the plastid distribution in extant eukaryotes. Notably, the chromalveolate hypothesis suggested that multiple eukaryotic lineages were derived from a photosynthetic ancestor that had a red algal endosymbiont. As such, genes of plastid/algal origin in aplastidic chromalveolates, such as oomycetes, were considered to be important supporting evidence. Although the chromalveolate hypothesis has been seriously challenged, some of its supporting evidence has not been carefully investigated. In this study, we re-evaluate the "algal" genes from oomycetes with a larger sampling and careful phylogenetic analyses. Our data provide no conclusive support for a common photosynthetic ancestry of stramenopiles, but show that the initial estimate of "algal" genes in oomycetes was drastically inflated due to limited genome data available then for certain eukaryotic lineages. These findings also suggest that the evolutionary histories of these "algal" genes might be attributed to complex scenarios such as differential gene loss, serial endosymbioses, or horizontal gene transfer.
KeywordPlastid Evolution Stramenopiles Endosymbiosis Horizontal Gene Transfer Eukaryotic Evolution
Subject AreaPlant Sciences
Indexed BySCI
WOS IDWOS:000409408200001
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Henan Univ, Inst Plant Stress Biol, State Key Lab Cotton Biol, Kaifeng, Peoples R China
4.East Carolina Univ, Dept Biol, Greenville, NC 27858 USA
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GB/T 7714
Wang, Qia,Sun, Hang,Huang, Jinling. Re-analyses of "Algal" Genes Suggest a Complex Evolutionary History of Oomycetes.[J]. FRONTIERS IN PLANT SCIENCE,2017,8:1540.
APA Wang, Qia,Sun, Hang,&Huang, Jinling.(2017).Re-analyses of "Algal" Genes Suggest a Complex Evolutionary History of Oomycetes..FRONTIERS IN PLANT SCIENCE,8,1540.
MLA Wang, Qia,et al."Re-analyses of "Algal" Genes Suggest a Complex Evolutionary History of Oomycetes.".FRONTIERS IN PLANT SCIENCE 8(2017):1540.
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