Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species
文献类型：期刊论文
| 作者 | Feng, Yan-Lei; Wicke, Susann; Li, Jian-Wu; Han, Yu; Lin, Choun-Sea; Li, De-Zhu ; Zhou, Ting-Ting; Huang, Wei-Chang; Huang, Lu-Qi; Jin, Xiao-Hua
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| 刊名 | GENOME BIOLOGY AND EVOLUTION
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| 出版日期 | 2016-07-01 |
| 卷号 | 8期号:7页码:2164-2175 |
| 关键词 | heterotrophy plastid genome reduction Neottieae Orchidaceae relaxed selection |
| 英文摘要 | The plastid genome (plastome) of heterotrophic plants like mycoheterotrophs and parasites shows massive gene losses in consequence to the relaxation of functional constraints on photosynthesis. To understand the patterns of this convergent plastome reduction syndrome in heterotrophic plants, we studied 12 closely related orchids of three different lifeforms from the tribe Neottieae (Orchidaceae). We employ a comparative genomics approach to examine structural and selectional changes in plastomes within Neottieae. Both leafy and leafless heterotrophic species have functionally reduced plastid genome. Our analyses show that genes for the NAD(P)H dehydrogenase complex, the photosystems, and the RNA polymerase have been lost functionally multiple times independently. The physical reduction proceeds in a highly lineage-specific manner, accompanied by structural reconfigurations such as inversions or modifications of the large inverted repeats. Despite significant but minor selectional changes, all retained genes continue to evolve under purifying selection. All leafless Neottia species, including both visibly green and nongreen members, are fully mycoheterotrophic, likely evolved from leafy and partially mycoheterotrophic species. The plastomes of Neottieae span many stages of plastome degradation, including the longest plastome of a mycoheterotroph, providing invaluable insights into the mechanisms of plastome evolution along the transition from autotrophy to full mycoheterotrophy. |
| 类目[WOS] | Evolutionary Biology ; Genetics & Heredity |
| 研究领域[WOS] | Evolutionary Biology ; Genetics & Heredity |
| 关键词[WOS] | NEOTTIA-NIDUS-AVIS ; PHYLOGENETIC ANALYSIS ; PARASITIC PLANT ; NONPHOTOSYNTHETIC INDIVIDUALS ; MORPHOLOGICAL CHARACTERS ; HETEROTROPHIC ORCHIDS ; CORALLORHIZA-TRIFIDA ; MOLECULAR EVOLUTION ; LIMODORUM-ABORTIVUM ; MAXIMUM-LIKELIHOOD |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000381502000008 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/28573]  |
| 专题 | 昆明植物研究所_中国科学院东亚植物多样性与生物地理学重点实验室 |
| 推荐引用方式 GB/T 7714 | Feng, Yan-Lei,Wicke, Susann,Li, Jian-Wu,et al. Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species[J]. GENOME BIOLOGY AND EVOLUTION,2016,8(7):2164-2175. |
| APA | Feng, Yan-Lei.,Wicke, Susann.,Li, Jian-Wu.,Han, Yu.,Lin, Choun-Sea.,...&Jin, Xiao-Hua.(2016).Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species.GENOME BIOLOGY AND EVOLUTION,8(7),2164-2175. |
| MLA | Feng, Yan-Lei,et al."Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species".GENOME BIOLOGY AND EVOLUTION 8.7(2016):2164-2175. |
入库方式： OAI收割
来源：昆明植物研究所
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