The evolution of multi-gene families and metabolic pathways in the evening primroses (Oenothera: Onagraceae): A comparative transcriptomics approach.

Autor: Kariñho-Betancourt E; Department of Biology, University of Toronto Mississauga, Mississauga, Ontario, Canada., Carlson D; Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York, United States of America., Hollister J; Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York, United States of America., Fischer A; Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany., Greiner S; Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany., Johnson MTJ; Department of Biology, University of Toronto Mississauga, Mississauga, Ontario, Canada.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2022 Jun 24; Vol. 17 (6), pp. e0269307. Date of Electronic Publication: 2022 Jun 24 (Print Publication: 2022).
DOI: 10.1371/journal.pone.0269307
Abstrakt: The plant genus Oenothera has played an important role in the study of plant evolution of genomes and plant defense and reproduction. Here, we build on the 1kp transcriptomic dataset by creating 44 new transcriptomes and analyzing a total of 63 transcriptomes to present a large-scale comparative study across 29 Oenothera species. Our dataset included 30.4 million reads per individual and 2.3 million transcripts on average. We used this transcriptome resource to examine genome-wide evolutionary patterns and functional diversification by searching for orthologous genes and performed gene family evolution analysis. We found wide heterogeneity in gene family evolution across the genus, with section Oenothera exhibiting the most pronounced evolutionary changes. Overall, more significant gene family expansions occurred than contractions. We also analyzed the molecular evolution of phenolic metabolism by retrieving proteins annotated for phenolic enzymatic complexes. We identified 1,568 phenolic genes arranged into 83 multigene families that varied widely across the genus. All taxa experienced rapid phenolic evolution (fast rate of genomic turnover) involving 33 gene families, which exhibited large expansions, gaining about 2-fold more genes than they lost. Upstream enzymes phenylalanine ammonia-lyase (PAL) and 4-coumaroyl: CoA ligase (4CL) accounted for most of the significant expansions and contractions. Our results suggest that adaptive and neutral evolutionary processes have contributed to Oenothera diversification and rapid gene family evolution.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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