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题名: Evidence for horizontal transfer of mitochondrial DNA to the plastid genome in a bamboo genus
作者: Ma, Peng-Fei1, 2; Zhang, Yu-Xiao1, 2; null(郭振华)2; null(李德铢)1, 2
刊名: SCIENTIFIC REPORTS
英文摘要: In flowering plants, three genomes (nuclear, mitochondrial, and plastid) coexist and intracellular horizontal transfer of DNA is prevalent, especially from the plastid to the mitochondrion genome. However, the plastid genomes are generally conserved in evolution and have long been considered immune to foreign DNA. Recently, the opposite direction of DNA transfer from the mitochondrial to the plastid genome has been reported in two eudicot lineages. Here we sequenced 6 plastid genomes of bamboos, three of which are neotropical woody species and three are herbaceous ones. Several unusual features were found, including the duplication of trnT-GGU and loss of one copy of rps19 due to contraction of inverted repeats (IRs). The most intriguing was the similar to 2.7 kb insertion in the plastid IR regions in the three herbaceous bamboos. Furthermore, the insertion was documented to be horizontally transferred from the mitochondrial to the plastid genome. Our study provided evidence of the mitochondrial-to-plastid DNA transfer in the monocots, demonstrating again that this rare event does occur in other angiosperm lineages. However, the mechanism underlying the transfer remains obscure, and more studies in other plants may elucidate it in the future.
出版日期: 2015-06-23
卷号: 5, 页码:11608
语种: 英语
收录类别: SCI
学科分类: Multidisciplinary Sciences
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/21361
Appears in Collections:中国西南野生生物种质资源库_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Plant Germplasm & Genom Ctr, Kunming 650201, Yunnan, Peoples R China
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