Reductional dysploidy and genome size diversity in Pooideae, the largest subfamily of grasses (Poaceae)

Plant Systematics and Evolution, Год журнала: 2025, Номер 311(3)

Опубликована: Май 9, 2025

Abstract The nuclear genome sizes of 59 species from 33 genera the Poaceae subfamily Pooideae were investigated by flow cytometry. This is characterized a wide range holoploid (2C values) and monoploid (1Cx mean chromosome sizes, including both highest some lowest values entire grass family. For example, tribe Brachypodieae has smallest genomes chromosomes, followed majority Stipeae individual representatives tribes Ampelodesmeae, Duthieeae Meliceae, which belong to phylogenetically ‘early-diverging’ lineages. Comparatively large found in Lygeeae Meliceae. ‘core Pooideae’ had largest subfamily, with greatest variation Aveneae, Festuceae Poeae. Bromeae especially Triticeae, includes wheat related crops, larger minimum compared other tribes. It appears that occurrence exclusively rather (> 3.4 pg/1Cx) chromosomes (MC ≥ 0.5 pg) restricted Triticeae. origin x = 7 12 lineages was apparently not an increase size, whereas fusion caused size. evolutionary aspects base number are discussed, new numbers presented, first polyploid (2 n 4 20) model plant Brachypodium distachyon s.s.

Язык: Английский

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Historical frequency of plants in nursery catalogues predicts likelihood of naturalization in ornamental species

Ecological Applications, Год журнала: 2025, Номер 35(3)

Опубликована: Апрель 1, 2025

Abstract Ornamental horticulture is the major pathway of non‐native plant species introductions worldwide. Historic nursery catalogues capture a long‐term view introduction effort arising from garden plantings and are powerful resource for understanding why some introduced ornamental subsequently jump fence. Analyses historic can help us understand reasons failed invasions as well successfully naturalize or invade. We used New Zealand 1860s to 1990s patterns invasions, successful naturalization invasion. Together with data on several horticulturally relevant traits, we boosted classification model predict likelihood A species' maximum height, its frequency in catalogues, family‐level global rate were most influential variables. Naturalized generally taller, more frequently offered sale, belonged families higher rates than those that had not naturalized. Other traits such cold hardiness shade tolerance significantly different between naturalized non‐naturalized but contributed somewhat overall fit. By contrast, our predictions would become invasive poor, without any robust relationships covariates. This indicates factors drive transition may be determined by characteristics habitats they Species incorrectly predicted have sufficient opportunity do so pose greater risk naturalizing future. provides an avenue identifying future enabling proactive management monitoring these concern.

Язык: Английский

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Transcriptome sequencing data provide a solid base to understand the phylogenetic relationships, biogeography and reticulated evolution of the genus Zamia L. (Cycadales: Zamiaceae)

Annals of Botany, Год журнала: 2024, Номер 134(5), С. 747 - 768

Опубликована: Май 16, 2024

Abstract Background and Aims Cycads are a key lineage to understand the early evolution of seed plants their response past environmental changes. However, tracing evolutionary trajectory cycad species is challenging when robust relationships at inter- or infrageneric level not well resolved. Methods Here, using 2901 single-copy nuclear genes, we explored gene flow within second largest genus cycads, i.e. Zamia, based on phylotranscriptomic analyses 90 % extant Zamia species. Based well-resolved phylogenetic framework, performed analyses, molecular dating biogeographical reconstruction examine spatiotemporal Zamia. We also ancestral state total 62 traits comprehensively investigate its morphological evolution. Key Results comprises seven major clades corresponding distinct distribution areas in Americas, with least three reticulation nodes revealed this genus. Extant lineages initially diversified around 18.4–32.6 (29.14) million years ago Mega-Mexico, then expanded eastward into Caribbean southward Central South America. Ancestral homoplasy most characters. Conclusions This study congruent from comparative methods/datasets, some conflicts being result incomplete sorting ancient/recent hybridization events. The strong association between biogeographic suggested that ancient dispersal events shaped modern pattern, regional climatic factors may have resulted following situ diversification. Climate cooling starting during mid-Miocene associated global expansion tropical America has dramatically driven diversification New World flora, as extinction nowadays cooler regions both hemispheres, indicated by fossil records.

Язык: Английский

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Naturalized alien flora of Uzbekistan: species richness, origin and habitats

Biological Invasions, Год журнала: 2024, Номер 26(9), С. 2819 - 2830

Опубликована: Июль 15, 2024

Язык: Английский

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Synergistic polyploidization and long‐distance dispersal enable the global diversification of yellowcress herbs

Global Ecology and Biogeography, Год журнала: 2023, Номер 33(3), С. 458 - 469

Опубликована: Дек. 14, 2023

Abstract Aim Long‐distance dispersal (LDD) plays an important role in shaping the distribution of global biodiversity. Polyploidy could favour invasion and thereby facilitate LDD. However, how to what extent polyploidy interacts with LDD remain unclear. Here, we test putative a cosmopolitan genus Rorippa . Location Global. Time Period Late Miocene present. Major Taxa Studied Scop., Brassicaceae. Methods We traced biogeographical speciation history for 17 diploids 41 polyploids using variation from plastid genomes multiple nuclear loci. The ploidy rate difference was demonstrated trait‐dependent modelling. Results shaped amphitropical disjunction , during which showed higher rates than those diploids, 5.6× increase under best‐fitted model. Five 21 were identified as products transoceanic events. Polyploidy‐involved more common terms polyploidization following preceding Main Conclusions demonstrate that would be not only driver but also responder highlighting synergistic relationship between them. Our results provide framework uncover consequences joint roles

Язык: Английский

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Neopolyploidy increases stress tolerance and reduces fitness plasticity across multiple urban pollutants: support for the ‘general purpose’ genotype hypothesis

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Сен. 12, 2023

ABSTRACT Whole genome duplication is a common macromutation with extensive impacts from gene expression, to cellular function, and whole organism phenotype. As result, it has been proposed that polyploids have ‘general purpose’ genotypes perform better than their diploid progenitors under stressful conditions. Here we test this hypothesis in the context of stresses presented by anthropogenic pollutants. Specifically, tested how multiple neotetraploid genetic lineages Greater Duckweed ( Spirodela polyrhiza ) across favorable control environment five urban pollutants (iron, salt, manganese, copper, aluminum). By quantifying population growth rate duckweed over generations found most pollutants, but not all, polyploidy decreased actively growing propagules increased dormant ones. Yet, when considering total propagule production, tolerance maintained population-level fitness diploids. Furthermore, broad-sense correlations among were all positive neopolyploids so for Our results provide rare support hypotheses are more tolerant conditions can maintain diploids heterogenous stresses. These may help predict distribution stress gradients such as those caused urbanization other human activities.

Язык: Английский

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Stage dependence of Elton’s biotic resistance hypothesis of biological invasion

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Апрель 26, 2024

Elton’s biotic resistance hypothesis posits that species-rich communities are more resistant to invasion. Yet, there is evidence species richness alone may not fully explain community resistance, as phylogenetic and functional richness, along with environmental factors human-induced disturbances, also play pivotal roles. Additionally, it remains unknown how these collectively affect plant invasion alien progress the introduction-naturalization-invasion continuum. For 12,056 local of Central Europe, we investigate presence at different stages Our study reveals varying effects on stages, highlighting complexity process. Specifically, demonstrate although resident had mostly negative strength sometimes direction varied By uncovering stage-dependent factors, our only offers a nuanced understanding but suggests other hypotheses should be carefully revisited given their potential nature.

Язык: Английский

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Alien flora of Mongolia: species richness, introduction dynamics and spatial patterns

Biological Invasions, Год журнала: 2024, Номер 26(8), С. 2407 - 2419

Опубликована: Май 24, 2024

Язык: Английский

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Survey sequencing and flow cytometry reveal the genomic characteristics and genetic markers of six wild sweetpotato species

Molecular Biology Reports, Год журнала: 2024, Номер 52(1)

Опубликована: Ноя. 26, 2024

Язык: Английский

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Differences in the genetic diversity and genome size between two ecotypes of Imperata cylindrica in Japan

Plant Species Biology, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 29, 2024

Abstract Understanding genomic characteristics, such as genetic diversity and genome size, is important because they relate to species ecotype performance. Imperata cylindrica has two ecotypes, the common type (C‐type) early‐flowering (E‐type), which differ in their ecological characteristics distribution ranges Japan. This study aimed elucidate of C‐type E‐type ecotypes I. throughout Japan, using multiplexed inter‐simple sequence repeat genotyping by sequencing (MIG‐seq) method. Genome‐wide single‐nucleotide polymorphism data analysis revealed that had greater clearer isolation distance than E‐type. Additionally, exhibited clear differentiation between southern part Amami Oshima other populations, consistent with differences its life history. The also a smaller E‐type, may contribute faster plant growth seed mass, compared larger These phenomena were C‐type. results showed genetically, highlighting necessity for different guidelines each conservation use revegetation.

Язык: Английский

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