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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A fully resolved backbone phylogeny reveals numerous dispersals and explosive diversifications throughout the history of Asteraceae

Proceedings of the National Academy of Sciences, Journal Year: 2019, Volume and Issue: 116(28), P. 14083 - 14088

Published: June 17, 2019

The sunflower family, Asteraceae, comprises 10% of all flowering plant species and displays an incredible diversity form. Asteraceae are clearly monophyletic, yet resolving phylogenetic relationships within the family has proven difficult, hindering our ability to understand its origin diversification. Recent molecular clock dating suggested a Cretaceous origin, but lack deep sampling many genes representative taxa from across impeded resolution migration routes diversifications that led global distribution tremendous diversity. Here we use genomic data 256 terminals estimate evolutionary relationships, timing diversification(s), biogeographic patterns. Our study places at ∼83 MYA in late reveals underwent series explosive radiations during Eocene which were accompanied by accelerations diversification rates. lineages gave rise nearly 95% extant originated began diversifying middle Eocene, coincident with ensuing marked cooling this period. Phylogenetic analyses support South American subsequent dispersals into North America then Asia Africa, later followed multiple worldwide directions. rapid mid-Eocene is aligned range shift Africa where modern-day tribes appear have originated. robust phylogeny provides framework for future studies aimed understanding role macroevolutionary patterns processes generated enormous Asteraceae.

Language: Английский

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Plant Phenylalanine/Tyrosine Ammonia-lyases

Trends in Plant Science, Journal Year: 2019, Volume and Issue: 25(1), P. 66 - 79

Published: Nov. 3, 2019

Language: Английский

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The impact of multifactorial stress combination on plants, crops, and ecosystems: how should we prepare for what comes next?

The Plant Journal, Journal Year: 2023, Volume and Issue: 117(6), P. 1800 - 1814

Published: Nov. 23, 2023

The complexity of environmental conditions encountered by plants in the field, or nature, is gradually increasing due to anthropogenic activities that promote global warming, climate change, and increased levels pollutants. While past it seemed sufficient study how acclimate one even two different stresses affecting them simultaneously, complex developing on our planet necessitate a new approach studying stress plants: Acclimation multiple occurring concurrently consecutively (termed, multifactorial combination [MFSC]). In an initial plant response MFSC, conducted with Arabidopsis thaliana seedlings subjected MFSC six abiotic stresses, was found increase number simultaneously impacting plant, growth survival declined, if effects each involved such minimal insignificant. three recent studies, crop plants, have similar commercial rice cultivar, maize hybrid, tomato, soybean, causing significant reductions growth, biomass, physiological parameters, and/or yield traits. As are worsening, as well becoming more complex, addressing its agriculture ecosystems worldwide becomes high priority. this review, we address crops, agriculture, worldwide, highlight potential avenues enhance resilience crops MFSC.

Language: Английский

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Genomic evidence for rediploidization and adaptive evolution following the whole-genome triplication

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 22, 2024

Abstract Whole-genome duplication (WGD), or polyploidy, events are widespread and significant in the evolutionary history of angiosperms. However, empirical evidence for rediploidization, major process where polyploids give rise to diploid descendants, is still lacking at genomic level. Here we present chromosome-scale genomes mangrove tree Sonneratia alba related inland plant Lagerstroemia speciosa . Their common ancestor has experienced a whole-genome triplication (WGT) approximately 64 million years ago coinciding with period dramatic global climate change. , adapting habitats, extensive chromosome rearrangements post-WGT. We observe WGT retentions display sequence expression divergence, suggesting potential neo- sub-functionalization. Strong selection acting on three-copy indicates adaptive value response new environments. To elucidate role ploidy changes genome evolution, improve model polyploidization–rediploidization based evidence, contributing understanding evolution during

Language: Английский

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The Origin of the Legumes is a Complex Paleopolyploid Phylogenomic Tangle Closely Associated with the Cretaceous–Paleogene (K–Pg) Mass Extinction Event

Systematic Biology, Journal Year: 2020, Volume and Issue: 70(3), P. 508 - 526

Published: May 26, 2020

Abstract The consequences of the Cretaceous–Paleogene (K–Pg) boundary (KPB) mass extinction for evolution plant diversity remain poorly understood, even though evolutionary turnover lineages at KPB is central to understanding assembly Cenozoic biota. apparent concentration whole genome duplication (WGD) events around may have played a role in survival and subsequent diversification lineages. To gain new insights into origins biodiversity, we examine origin early globally diverse legume family (Leguminosae or Fabaceae). Legumes are ecologically (co-)dominant across many vegetation types, fossil record suggests that they rose such prominence after parallel with several well-studied animal clades including Placentalia Neoaves. Furthermore, multiple WGD hypothesized occurred evolution. Using recently inferred phylogenomic framework, investigate placement WGDs during using gene tree reconciliation methods, count data phylogenetic supernetwork reconstruction. 20 calibrations estimate revised timeline based on 36 nuclear genes selected as informative evolving an approximately clock-like fashion. establish timing also date nodes trees. Results suggest either pan-legume event stem lineage family, allopolyploid involving (some of) earliest within crown group, additional nested subtending subfamilies Papilionoideae Detarioideae. Gene methods do not account allopolyploidy be misleading inferring earlier time divergence two parental polyploid, suggesting scenario more likely. We show age legumes dates Maastrichtian Paleocene that, apart from Detarioideae WGD, paleopolyploidy close KPB. conclude followed complex history, which auto- and/or coincided rapid association KPB, ultimately underpinning success Leguminosae Cenozoic. [Allopolyploidy; boundary; Fabaceae, Leguminosae; paleopolyploidy; phylogenomics; events]

Language: Английский

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Prickly waterlily and rigid hornwort genomes shed light on early angiosperm evolution

Nature Plants, Journal Year: 2020, Volume and Issue: 6(3), P. 215 - 222

Published: Feb. 24, 2020

Abstract Angiosperms represent one of the most spectacular terrestrial radiations on planet 1 , but their early diversification and phylogenetic relationships remain uncertain 2–5 . A key reason for this impasse is paucity complete genomes representing early-diverging angiosperms. Here, we present high-quality, chromosomal-level genome assemblies two aquatic species—prickly waterlily ( Euryale ferox ; Nymphaeales) rigid hornwort Ceratophyllum demersum Ceratophyllales)—and expand genomic representation sectors angiosperm tree life. We identify multiple independent polyploidization events in each five major clades (that is, Nymphaeales, magnoliids, monocots, Ceratophyllales eudicots). Furthermore, our phylogenomic analyses, which spanned datasets diverse methods, confirm that Amborella Nymphaeales are successively sister to all other these help elucidate among subclades within Mesangiospermae, contain about 350,000 species. In particular, species-poor lineage supported as eudicots, monocots magnoliids placed eudicots. Finally, analyses indicate incomplete sorting may account incongruent placement between nuclear plastid genomes.

Language: Английский

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The Perfect Storm: Gene Tree Estimation Error, Incomplete Lineage Sorting, and Ancient Gene Flow Explain the Most Recalcitrant Ancient Angiosperm Clade, Malpighiales

Systematic Biology, Journal Year: 2020, Volume and Issue: 70(3), P. 491 - 507

Published: Nov. 1, 2020

Abstract The genomic revolution offers renewed hope of resolving rapid radiations in the Tree Life. development multispecies coalescent model and improved gene tree estimation methods can better accommodate heterogeneity caused by incomplete lineage sorting (ILS) error stemming from short internal branches. However, relative influence these factors species inference is not well understood. Using anchored hybrid enrichment, we generated a data set including 423 single-copy loci 64 taxa representing 39 families to infer flowering plant order Malpighiales. This includes 9 top 10 most unstable nodes angiosperms, which have been hypothesized arise radiation during Cretaceous. Here, show that coalescent-based do resolve backbone Malpighiales concatenation yield inconsistent estimations, providing evidence high this clade. Despite levels ILS error, our simulations demonstrate two alone are insufficient explain lack resolution order. To explore further, examined triplet frequencies among empirical trees discovered some them deviated significantly those attributed suggesting flow as an additional previously unappreciated phenomenon promoting variation Finally, applied novel method quantify contribution three primary sources demonstrated ILS, contributed 10.0$\%$, 34.8$\%$, 21.4$\%$ variation, respectively. Together, results suggest perfect storm likely resolution, further indicate recalcitrant phylogenetic relationships like may be represented networks. Thus, reducing such groups solely existing models adhere strictly bifurcating greatly oversimplifies reality, obscures ability more clearly discern process evolution. [Coalescent; concatenation; flanking region; introgression; phylogenomics; radiation, frequency.]

Language: Английский

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Deeply Altered Genome Architecture in the Endoparasitic Flowering Plant Sapria himalayana Griff. (Rafflesiaceae)

Current Biology, Journal Year: 2021, Volume and Issue: 31(5), P. 1002 - 1011.e9

Published: Jan. 23, 2021

Language: Английский

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Polyploidy promotes species diversification of Allium through ecological shifts

New Phytologist, Journal Year: 2019, Volume and Issue: 225(1), P. 571 - 583

Published: Aug. 8, 2019

Despite the role of polyploidy in multiple evolutionary processes, its impact on plant diversification remains controversial. An increased polyploid frequency may facilitate speciation through shifts ecology, morphology or both. Here we used Allium to evaluate: (1) relationship between intraspecific and species rate; (2) whether this process is associated with habitat and/or trait shifts. Using eight plastid nuclear ribosomal markers, built a phylogeny 448 species, representing 46% total. We quantified ploidy diversity, heterogeneity rates their along using trait-dependent models. Finally, evaluated association polyploidisation detected high diversity polyploidy-related rate shift probability 95% East Asia. lineages frequencies had higher than those diploids lower frequencies. Shifts were strongly correlated linked particular soil conditions; 81.7% edaphic variation could be explained by polyploidisation. Our study emphasises combined ecological drivers diversification, which explain radiations more generally.

Language: Английский

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