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Contradiction between Plastid Gene Transcription and Function Due to Complex Posttranscriptional Splicing: An Exemplary Study of ycf15 Function and Evolution in Angiosperms
Shi, Chao1,2,3; Liu, Yuan2,3; Huang, Hui2; Xia, En-Hua2,3; Zhang, Hai-Bin2,3; Gao, Li-Zhi2
2013-03-18
发表期刊PLOS ONE
ISSN1932-6203
卷号8期号:3页码:e59620
摘要Plant chloroplast genes are usually co-transcribed while its posttranscriptional splicing is fairly complex and remains largely unsolved. On basis of sequencing the three complete Camellia (Theaceae) chloroplast genomes for the first time, we comprehensively analyzed the evolutionary patterns of ycf15, a plastid gene quite paradoxical in terms of its function and evolution, along the inferred angiosperm phylogeny. Although many species in separate lineages including the three species reported here contained an intact ycf15 gene in their chloroplast genomes, the phylogenetic mixture of both intact and obviously disabled ycf15 genes imply that they are all non-functional. Both intracellular gene transfer (IGT) and horizontal gene transfer (HGT) failed to explain such distributional anomalies. While, transcriptome analyses revealed that ycf15 was transcribed as precursor polycistronic transcript which contained ycf2, ycf15 and antisense trnL-CAA. The transcriptome assembly was surprisingly found to cover near the complete Camellia chloroplast genome. Many non-coding regions including pseudogenes were mapped by multiple transcripts, indicating the generality of pseudogene transcriptions. Our results suggest that plastid DNA posttranscriptional splicing may involve complex cleavage of nonfunctional genes.
关键词Chloroplast Genome Sequence Complete Nucleotide-sequence Independent Transfers Horizontal Transfer Maximum-likelihood Flowering Plants Rna-metabolism Nucleus Dna Organization
资助信息Key Project of Natural Science Foundation of Yunnan Province [2010CC011]; Top Talents Program of Yunnan Province [20080A009]; Hundreds Oversea Talents Program of Yunnan Province, Hundreds Talents Program of Chinese Academy of Sciences; Chinese Academy of Science [KSCX2-YW-N-029]; Chinese Department of Science and Technology (973 Program) [2007CB815703]; startup grant of Kunming Institute of Botany, CAS
学科领域Science & Technology - Other Topics
收录类别SCI
语种英语
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000316411600068
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被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/16493
专题中国西南野生生物种质资源库
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species Southwest China, Plant Germplasm & Genom Ctr, Kunming, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
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Shi, Chao,Liu, Yuan,Huang, Hui,et al. Contradiction between Plastid Gene Transcription and Function Due to Complex Posttranscriptional Splicing: An Exemplary Study of ycf15 Function and Evolution in Angiosperms[J]. PLOS ONE,2013,8(3):e59620.
APA Shi, Chao,Liu, Yuan,Huang, Hui,Xia, En-Hua,Zhang, Hai-Bin,&Gao, Li-Zhi.(2013).Contradiction between Plastid Gene Transcription and Function Due to Complex Posttranscriptional Splicing: An Exemplary Study of ycf15 Function and Evolution in Angiosperms.PLOS ONE,8(3),e59620.
MLA Shi, Chao,et al."Contradiction between Plastid Gene Transcription and Function Due to Complex Posttranscriptional Splicing: An Exemplary Study of ycf15 Function and Evolution in Angiosperms".PLOS ONE 8.3(2013):e59620.
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