Habitat diversification associated with urban development has a little effect on genetic structure in the annual native plant Commelina communis in an East Asian megacity

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(2)

Published: Feb. 1, 2024

Urban development greatly alters the natural and semi-natural habitats of native plants. Urbanisation results in a range diverse including remnant agricultural lands, urban parks, roadside habitats. This habitat diversity often promotes trait divergence within areas. However, mechanisms by which influence population genetic structure individual plant species remain poorly understood. We investigated effects urbanisation on 24

Language: Английский

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City divided: Unveiling family ties and genetic structuring of coyotes in Seattle

Molecular Ecology, Journal Year: 2024, Volume and Issue: 33(14)

Published: June 4, 2024

Abstract Linear barriers pose significant challenges for wildlife gene flow, impacting species persistence, adaptation, and evolution. While numerous studies have examined the effects of linear (e.g., fences roadways) on partitioning urban non‐urban areas, understanding their influence flow within cities remains limited. Here, we investigated impact coyote ( Canis latrans ) population structure in Seattle, Washington, where major (i.e., interstate highways bodies water) divide city into distinct quadrants. Just under 1000 scats were collected to obtain genetic data between January 2021 December 2022, allowing us identify 73 individual coyotes. Notably, private allele analysis underscored limited interbreeding among When comparing one quadrant each other, there up 16 alleles a single quadrant, representing nearly 22% allelic diversity. Our revealed weak isolation by distance, despite being highly mobile species, structuring was apparent quadrants even with extremely short geographic distance coyotes, implying that Interstate 5 Ship Canal act as barriers. This study uses coyotes model its consequences cities, crucial component bolstering conservation rarer developing friendly cities.

Language: Английский

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Allopolyploidy enhances survival advantages for urban environments in the native plant genus Commelina

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: June 27, 2024

Background and Aims Urbanization-induced environmental changes have profound effects on the geographical distribution limits in natural plant species. Polyploidization, an influential dynamic genome change, may determine survival potentials of species urban environments. This study focused native plants, Commelina communis L. (Cc) closely related subspecies, C. f. ciliata (Masam.) Murata (Ccfc) which different chromosome numbers (e.g. Cc: 2n = 88, Ccfc: 46). The aim is to investigate polyploidization Methods across urban-rural gradients was investigated at a total 218 sites Japan. Stomata size density were measured compared between Cc Ccfc. Flow cytometry used polyploidy. Chromosome karyotyping performed by using GISH method. Key results Urban areas exclusively dominated Cc, while Ccfc coexisted rural areas. had larger fewer stomata more than twice indicated that possesses another unknown genome, suggesting allopolyploidy. Conclusions These show ploidy difference affects distribution, traits, In addition, indicate has allopolyploid these two genus are distinct. Therefore, not only polyploid but also contributes enhance environments first investigation clarify environments, traits size, conduct composition

Language: Английский

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Allopolyploidy enhances survival advantages for urban environments in the native plant genus Commelina

Annals of Botany, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 23, 2024

Abstract Background and Aims Urbanization-induced environmental changes affect the geographical distribution of natural plant species. This study focused on how polyploidization, a dynamic genome change, influences survival Commelina communis (Cc) its subspecies C. f. ciliata (Ccfc), which have variable chromosome numbers (e.g. Cc, 2n = 88 for Cc; Ccfc, 46 Ccfc). The aim was to investigate polyploidization effects in urban environments. Methods across urban–rural gradients investigated at total 218 sites Japan. Stomata size density were measured compared between Cc Ccfc. Flow cytometry determined polyploidy. Chromosome karyotyping performed using genomic situ hybridization (GISH) method. Key Results Urban areas exclusively dominated by while Ccfc coexisted rural areas. had larger fewer stomata more than twice that GISH results indicated possesses another unknown genome, suggesting allopolyploidy. Conclusions Our show ploidy difference affects distribution, traits two distinct taxa genus Commelina, as neo-tetraploid ciliata, diploid. is an allopolyploid therefore not only polyploidy but also has additional provides new sets genes alleles, contributing having enhanced potentials environments with first investigation clarify related environments, size, composition

Language: Английский

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Population genetics of an endangered desert shrub endemic to northwestern China

Trees, Journal Year: 2024, Volume and Issue: 38(4), P. 985 - 996

Published: May 31, 2024

Language: Английский

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