Polyploidy: an evolutionary and ecological force in stressful times

The Plant Cell, Journal Year: 2020, Volume and Issue: 33(1), P. 11 - 26

Published: Dec. 1, 2020

Polyploidy has been hypothesized to be both an evolutionary dead-end and a source for innovation species diversification. Although polyploid organisms, especially plants, abound, the apparent nonrandom long-term establishment of genome duplications suggests link with environmental conditions. Whole-genome seem correlate periods extinction or global change, while polyploids often thrive in harsh disturbed environments. Evidence is also accumulating that biotic interactions, instance, pathogens mutualists, affect differently than nonpolyploids. Here, we review recent findings insights on effect abiotic stress versus nonpolyploids propose response general important even determining factor success polyploidy.

Language: Английский

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Tectonics, climate and the diversification of the tropical African terrestrial flora and fauna

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2020, Volume and Issue: 96(1), P. 16 - 51

Published: Sept. 13, 2020

ABSTRACT Tropical Africa is home to an astonishing biodiversity occurring in a variety of ecosystems. Past climatic change and geological events have impacted the evolution diversification this biodiversity. During last two decades, around 90 dated molecular phylogenies different clades across animals plants been published leading increased understanding speciation processes generating tropical African In parallel, extended palaeoclimatic records together with detailed numerical simulations refined our past changes Africa. To date, these important advances not reviewed within common framework. Here, we critically review synthesize climate, tectonics terrestrial throughout Cenozoic mid‐Pleistocene, drawing on recent Earth life sciences. We first six major geo‐climatic periods defining by synthesizing 89 phylogeny studies. Two factors impacting sub‐Saharan biota are highlighted. First, underwent numerous fluctuations at ancient more timescales, tectonic, greenhouse gas, orbital forcing stimulating diversification. Second, aridification since Late Eocene led extinction events, but also provided unique opportunities shaping current landscape. then studies animal plant discuss three models speciation: ( i ) geographic via vicariance (allopatry); ii ecological climate changes, iii genomic genome duplication. Geographic has most widely documented date model conclude four challenges faced research: increase knowledge gathering basic fundamental information; improve modelling geophysical better constraints downscaling approaches; precision phylogenetic reconstruction dating using next generation sequencing approaches fossil calibrations; iv finally, as done here, integrate data from sciences focusing interdisciplinary study wider geodiversity context.

Language: Английский

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Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests

Science, Journal Year: 2021, Volume and Issue: 372(6537), P. 63 - 68

Published: April 1, 2021

The end-Cretaceous event was catastrophic for terrestrial communities worldwide, yet its long-lasting effect on tropical forests remains largely unknown. We quantified plant extinction and ecological change in resulting from the using fossil pollen (>50,000 occurrences) leaves (>6000 specimens) localities Colombia. Late Cretaceous (Maastrichtian) rainforests were characterized by an open canopy diverse plant-insect interactions. Plant diversity declined 45% at Cretaceous-Paleogene boundary did not recover ~6 million years. Paleocene resembled modern Neotropical rainforests, with a closed multistratal structure dominated angiosperms. triggered long interval of low Neotropics evolutionary assembly today's most ecosystem.

Language: Английский

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Nuclear phylotranscriptomics and phylogenomics support numerous polyploidization events and hypotheses for the evolution of rhizobial nitrogen-fixing symbiosis in Fabaceae

Molecular Plant, Journal Year: 2021, Volume and Issue: 14(5), P. 748 - 773

Published: Feb. 23, 2021

Language: Английский

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Host preference and invasiveness of commensal bacteria in the Lotus and Arabidopsis root microbiota

Nature Microbiology, Journal Year: 2021, Volume and Issue: 6(9), P. 1150 - 1162

Published: July 26, 2021

Abstract Roots of different plant species are colonized by bacterial communities, that distinct even when hosts share the same habitat. It remains unclear to what extent host actively selects these communities and whether commensals adapted a specific species. To address this question, we assembled sequence-indexed culture collection from roots nodules Lotus japonicus contains representatives most previously identified using metagenomics. We analysed taxonomically paired synthetic L. Arabidopsis thaliana in multi-species gnotobiotic system detected signatures preference among commensal bacteria community context, but not mono-associations. Sequential inoculation experiments revealed priority effects during root microbiota assembly, where established resilient invasion latecomers, confers competitive advantage their cognate host. Our findings show diverse taxonomic groups is associated with invasiveness into standing root-associated communities.

Language: Английский

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Dynamic genome evolution in a model fern

Nature Plants, Journal Year: 2022, Volume and Issue: 8(9), P. 1038 - 1051

Published: Sept. 1, 2022

Abstract The large size and complexity of most fern genomes have hampered efforts to elucidate fundamental aspects biology land plant evolution through genome-enabled research. Here we present a chromosomal genome assembly associated methylome, transcriptome metabolome analyses for the model species Ceratopteris richardii . reveals history remarkably dynamic including rapid changes in content structure following recent whole-genome duplication approximately 60 million years ago. These include massive gene loss, rampant tandem duplications multiple horizontal transfers from bacteria, contributing diversification defence-related families. insertion transposable elements into introns has led exceptionally long genes relative other plants. Gene family indicate that directing seed development were co-opted those controlling sporangia, providing insights evolution. Our findings annotated extend utility as investigating teaching biology.

Language: Английский

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Phylogenomic analyses highlight innovation and introgression in the continental radiations of Fagaceae across the Northern Hemisphere

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: March 14, 2022

Northern Hemisphere forests changed drastically in the early Eocene with diversification of oak family (Fagaceae). Cooling climates over next 20 million years fostered spread temperate biomes that became increasingly dominated by oaks and their chestnut relatives. Here we use phylogenomic analyses nuclear plastid genomes to investigate timing pattern major macroevolutionary events ancient genome-wide signatures hybridization across Fagaceae. Innovation related seed dispersal is implicated triggering waves continental radiations beginning rapid lineages resulting unparalleled transformation forest dynamics within 15 following K-Pg extinction. We detect introgression at multiple time scales, including predating origination genus-level diversity. As moved into newly available habitats Miocene, secondary contact between previously isolated species occurred. This resulted adaptive introgression, which may have further amplified white Eurasia.

Language: Английский

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Humboldt Review: Are legumes different? Origins and consequences of evolving nitrogen fixing symbioses

Journal of Plant Physiology, Journal Year: 2022, Volume and Issue: 276, P. 153765 - 153765

Published: July 31, 2022

Language: Английский

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Precipitation is the main axis of tropical plant phylogenetic turnover across space and time

Science Advances, Journal Year: 2023, Volume and Issue: 9(7)

Published: Feb. 17, 2023

Early natural historians—Comte de Buffon, von Humboldt, and De Candolle—established environment geography as two principal axes determining the distribution of groups organisms, laying foundations for biogeography over subsequent 200 years, yet relative importance these remains unresolved. Leveraging phylogenomic global species data Mimosoid legumes, a pantropical plant clade c. 3500 species, we show that water availability gradient from deserts to rain forests dictates turnover lineages within continents across tropics. We demonstrate 95% speciation occurs precipitation niche, showing profound phylogenetic niche conservatism, lineage boundaries coincide with isohyets precipitation. reveal similar patterns on different continents, implying evolution dispersal follow universal processes.

Language: Английский

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Advances in Legume Systematics 14. Classification of Caesalpinioideae. Part 2: Higher-level classification

PhytoKeys, Journal Year: 2024, Volume and Issue: 240, P. 1 - 552

Published: April 3, 2024

Caesalpinioideae is the second largest subfamily of legumes (Leguminosae) with ca. 4680 species and 163 genera. It an ecologically economically important group formed mostly woody perennials that range from large canopy emergent trees to functionally herbaceous geoxyles, lianas shrubs, which has a global distribution, occurring on every continent except Antarctica. Following recent re-circumscription 15 genera as presented in Advances Legume Systematics 14, Part 1, using basis phylogenomic analysis 997 nuclear gene sequences for 420 all but five currently recognised subfamily, we present new higher-level classification subfamily. The comprises eleven tribes, are either new, reinstated or re-circumscribed at this rank: Caesalpinieae Rchb. (27 / 223 species), Campsiandreae LPWG (2 5–22), Cassieae Bronn (7 695), Ceratonieae (4 6), Dimorphandreae Benth. 35), Erythrophleeae /13), Gleditsieae Nakai (3 20), Mimoseae (100 3510), Pterogyneae (1 1), Schizolobieae (8 42–43), Sclerolobieae & Hook. f. (5 113). Although many these lineages have been named past, tribes informal generic groups, their circumscriptions varied widely changed over past decades, such described here differ membership those previously recognised. Importantly, approximately 3500 100 former Mimosoideae now placed reinstated, newly circumscribed, tribe Mimoseae. Because size ecological importance tribe, also provide clade-based system includes 17 lower-level clades. Fourteen remain unplaced clades: eight resolved two grades six phylogenetically isolated monogeneric lineages. In addition classification, key genera, morphological descriptions notes diversity growth forms, foliage, flowers fruits illustrated each genus distribution map, based quality-controlled herbarium specimen localities. A glossary specialised terms used legume morphology provided. This provides solid communication framework downstream analyses biogeography, trait evolution diversification, well taxonomic revision still understudied

Language: Английский

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