RRC ID 72082
著者 Schley RJ, Pellicer J, Ge XJ, Barrett C, Bellot S, Guignard MS, Novák P, Suda J, Fraser D, Baker WJ, Dodsworth S, Macas J, Leitch AR, Leitch IJ.
タイトル The ecology of palm genomes: repeat-associated genome size expansion is constrained by aridity.
ジャーナル New Phytol
Abstract Genome size varies 2400-fold across plants, influencing their evolution through changes in cell size and cell division rates which impact plants' environmental stress tolerance. Repetitive element expansion explains much genome size diversity, and the processes structuring repeat 'communities' are analogous to those structuring ecological communities. However, which environmental stressors influence repeat community dynamics has not yet been examined from an ecological perspective. We measured genome size and leveraged climatic data for 91% of genera within the ecologically diverse palm family (Arecaceae). We then generated genomic repeat profiles for 141 palm species, and analysed repeats using phylogenetically informed linear models to explore relationships between repeat dynamics and environmental factors. We show that palm genome size and repeat 'community' composition are best explained by aridity. Specifically, Ty3-gypsy and TIR elements were more abundant in palm species from wetter environments, which generally had larger genomes, suggesting amplification. By contrast, Ty1-copia and LINE elements were more abundant in drier environments. Our results suggest that water stress inhibits repeat expansion through selection on upper genome size limits. However, elements that may associate with stress-response genes (e.g. Ty1-copia) have amplified in arid-adapted palm species. Overall, we provide novel evidence of climate influencing the assembly of repeat 'communities'.
巻・号 236(2)
ページ 433-446
公開日 2022-10-1
DOI 10.1111/nph.18323
PMID 35717562
PMC PMC9796251
MeSH Arecaceae* / genetics Evolution, Molecular Genome Size Genome, Plant Phylogeny Retroelements* Sequence Analysis, DNA
IF 8.512
リソース情報
GBIF Plant specimens of Ishikawa Museum of Natural History Plant specimens of Toyota City Nature Sanctuary Plant specimens of Horaiji-san Museum of Natural History Toji K. collection Vascular plant specimens of Akita Prefectural Museum Vascular plants database of Atsugi City Museum Herbarium, University Archives and Collections, Fukushima University, Japan (FKSE) Angiospermatatophytina Collection of Saitama Museum of Natural History Vascular plant specimens of Iida City Museum Vascular Plant Collection of Natural History Museum and Institute, Chiba Herbarium Specimens of Museum of Nature and Human Activities, Hyogo Pref., Japan Vascular Plant Specimens of Kochi Prefectural Makino Botanical Garden Vascular Plant Specimen database of Kanagawa Prefectural Museum of Natural History Gunma Museum of Natural History, Vascular Plant Specimen Vascular plants collection of Hiratsuka City Museum Herbarium Specimens of Bonin and Ryukyu Islands Occurrence data of woody plants in the Ginkakuzi-san National Forest Plant specimens of Parthenon Tama Museum (PTHM) Tracheophyta collection of Biodiversity Center of Japan, Ministry of the Environment Plant specimens of Toyota City Nature Sanctuary (from non-museum circle) Vascular plant specimens of Toyama Science Museum Spermatophyta collection of Museum of Natural and Environmental History, Shizuoka Ibaraki Nature Museum, Vascular Plants collection Vascular plant specimens of National Museum of Nature and Science (TNS) Plant Specimens of Kurashiki Museum of Natural History Herbarium Specimens of Tokushima Prefectural Museum, Japan Herbarium of Kitakyushu Museum of Natural History and Human History Vascular Plants Collection of Sagamihara City Museum Plant specimens in the Museum of Nature and Human Activities, Hyogo Prefecture, Japan Plant specimens deposited in Osaka Museum of Natural History, Japan