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Lateral transfers of large DNA fragments spread functional genes among grasses
Dunning, Luke T.1; Olofsson, Jill K.1; Parisod, Christian2; Choudhury, Rimjhim Roy2; Moreno-Villena, Jose J.1,7; Yang, Yang3; Dionora, Jacqueline4; Paul Quick, W.1,4; Park, Minkyu5; Bennetzen, Jeffrey L.5; Besnard, Guillaume6; Nosil, Patrik1; Osborne, Colin P.1; Christin, Pascal-Antoine1
2019-03-05
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
Volume116Issue:10Pages:4416-4425
AbstractA fundamental tenet of multicellular eukaryotic evolution is that vertical inheritance is paramount, with natural selection acting on genetic variants transferred from parents to offspring. This lineal process means that an organism's adaptive potential can be restricted by its evolutionary history, the amount of standing genetic variation, and its mutation rate. Lateral gene transfer (LGT) theoretically provides a mechanism to bypass many of these limitations, but the evolutionary importance and frequency of this process in multicellular eukaryotes, such as plants, remains debated. We address this issue by assembling a chromosome-level genome for the grass Alloteropsis semialata, a species surmised to exhibit two LGTs, and screen it for other grass-to-grass LGTs using genomic data from 146 other grass species. Through stringent phylogenomic analyses, we discovered 57 additional LGTs in the A. semialata nuclear genome, involving at least nine different donor species. The LGTs are clustered in 23 laterally acquired genomic fragments that are up to 170 kb long and have accumulated during the diversification of Alloteropsis. The majority of the 59 LGTs in A. semialata are expressed, and we show that they have added functions to the recipient genome. Functional LGTs were further detected in the genomes of five other grass species, demonstrating that this process is likely widespread in this globally important group of plants. LGT therefore appears to represent a potent evolutionary force capable of spreading functional genes among distantly related grass species.
Keywordadaptation genome Poaceae horizontal gene transfer phylogenetics
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/65156
Collection中国西南野生生物种质资源库
Corresponding AuthorChristin, Pascal-Antoine
Affiliation1.Univ Sheffield, Anim & Plant Sci, Western Bank, Sheffield S10 2TN, S Yorkshire, England
2.Univ Bern, Inst Plant Sci, CH-3013 Bern, Switzerland
3.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
4.Int Rice Res Inst, Syst Physiol Cluster, Manila 1301, Philippines
5.Univ Georgia, Dept Genet, Athens, GA 30602 USA
6.Inst Rech Dev, CNRS, Lab Evolut & Diversite Biol, EDB,UMR5174, F-31062 Toulouse, France
7.Yale Univ, Dept Ecol & Evolutionary Biol, New Haven, CT 06511 USA
Recommended Citation
GB/T 7714
Dunning, Luke T.,Olofsson, Jill K.,Parisod, Christian,et al. Lateral transfers of large DNA fragments spread functional genes among grasses[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(10):4416-4425.
APA Dunning, Luke T..,Olofsson, Jill K..,Parisod, Christian.,Choudhury, Rimjhim Roy.,Moreno-Villena, Jose J..,...&Christin, Pascal-Antoine.(2019).Lateral transfers of large DNA fragments spread functional genes among grasses.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(10),4416-4425.
MLA Dunning, Luke T.,et al."Lateral transfers of large DNA fragments spread functional genes among grasses".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.10(2019):4416-4425.
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