Lateral transfers of large DNA fragments spread functional genes among grasses

Proceedings of the National Academy of Sciences of the United States of America
Luke T DunningPascal-Antoine Christin

Abstract

A 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 th...Continue Reading

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Citations

Apr 6, 2019·Journal of Experimental Botany·Luke T DunningPascal-Antoine Christin
Mar 22, 2020·American Journal of Botany·Luke T Dunning, Pascal-Antoine Christin
Mar 7, 2020·Annual Review of Plant Biology·Urte Schlüter, Andreas P M Weber
Aug 30, 2020·Annals of the New York Academy of Sciences·Toni Gabaldón
Jun 11, 2020·Molecular Biology and Evolution·Chatchawal PhansopaPascal-Antoine Christin
Mar 15, 2020·Nature Communications·Hua-Hao ZhangClément Gilbert
Jul 28, 2019·The New Phytologist·David A Wickell, Fay-Wei Li
Sep 11, 2020·Evolutionary Applications·Virginie Courtier-OrgogozoChristophe Boëte
Jul 22, 2020·Nature Plants·Philipp E BayerDavid Edwards
May 16, 2020·Journal of Experimental Botany·Sophie N R YoungMarjorie R Lundgren
Nov 11, 2020·Proceedings. Biological Sciences·Matheus E BianconiPascal-Antoine Christin
Nov 5, 2019·Current Biology : CB·Jill K OlofssonPascal-Antoine Christin
Feb 11, 2021·Molecular Biology and Evolution·Lina KloubMukul S Bansal
Oct 16, 2020·Molecular Ecology Resources·Michael D NowakChristian Brochmann
Jan 24, 2021·The Plant Journal : for Cell and Molecular Biology·Václav MahelkaJan Šafář
Apr 23, 2021·The New Phytologist·Samuel G S HibdigeLuke T Dunning
May 1, 2021·International Journal of Molecular Sciences·Ewa Filip, Lidia Skuza
May 9, 2021·Molecular Biology and Evolution·Minkyu ParkJeffrey L Bennetzen
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Jul 2, 2021·Plant, Cell & Environment·Mariana A S Artur, Kaisa Kajala
Aug 28, 2021·Life·Emilie AubinOlivier Panaud
Jan 27, 2022·Proceedings. Biological Sciences·Emma V CurranPascal-Antoine Christin

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Methods Mentioned

BETA
RNA-Seq

Software Mentioned

BUSCO
BLAST

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