Pollinator‐mediated effects of landscape‐scale land use on grassland plant community composition and ecosystem functioning – seven hypotheses

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2023, Volume and Issue: 99(3), P. 675 - 698

Published: Dec. 20, 2023

ABSTRACT Environmental change is disrupting mutualisms between organisms worldwide. Reported declines in insect populations and changes pollinator community compositions response to land use other environmental drivers have put the spotlight on need conserve pollinators. While this often motivated by their role supporting crop yields, of pollinators for reproduction resulting taxonomic functional assembly wild plant communities has received less attention. Recent findings suggest that observed experimental gradients availability can affect composition, but we know little about when such shifts are be expected, or impact they ecosystem functioning. Correlations traits related pollination important functions, as productivity, nitrogen uptake palatability herbivores, lead us expect non‐random functioning communities. At same time, ecological evolutionary processes may counteract these effects declines, limiting Despite calls investigate community‐ ecosystem‐level impacts reduced pollination, study plants largely been confined individuals single‐species populations. With review aim break new ground bringing together aspects landscape ecology, plant–insect interactions, biodiversity–ecosystem research, generate ideas hypotheses consequences land‐use change, using grasslands a focal system. Based an integrated set seven hypotheses, call more research investigating putative pollinator‐mediated links landscape‐scale In particular, future should combinations observational approaches assess over multiple years across species trait distributions both within among species.

Language: Английский

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Weak coupling among barrier loci and waves of neutral and adaptive introgression across an expanding hybrid zone

Evolution, Journal Year: 2021, Volume and Issue: 75(12), P. 3098 - 3114

Published: Oct. 20, 2021

Hybridization can serve as an evolutionary stimulus, but we have little understanding of introgression at early stages hybrid zone formation. We analyze reproductive isolation and between a range‐limited widespread species. Reproductive barriers are estimated based on differences in flowering time, ecogeographic distributions, seed set from crosses. find asymmetrical mating barrier due to cytonuclear incompatibility that is consistent with observed clusters coincident concordant tension clines (barrier loci) for mtDNA haplotypes nuclear SNPs. These groups spread across the zone, resulting weak coupling among loci extensive introgression. Neutral had nearly equal into both species' ranges, whereas putative cases adaptive exceptionally wide centers shifted toward one Analyses cline shape indicate secondary contact was initiated within last 800 generations per‐generation dispersal 200 400 m, provide some first estimates strength selection required account levels The species boundary these appears be dissolution, ultimately will precipitate genetic swamping

Language: Английский

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Genomic Analyses of Wild and Cultivated Bacanora Agave (Agave angustifolia var. pacifica) Reveal Inbreeding, Few Signs of Cultivation History and Shallow Population Structure

Plants, Journal Year: 2022, Volume and Issue: 11(11), P. 1426 - 1426

Published: May 27, 2022

Due to the recent increase in demand for agave-based beverages, many wild agave populations have experienced rapid decline and fragmentation, whereas cultivated plants are now managed at monocultural plantations, some cases involving clonal propagation. We examined relative effect of migration, genetic drift, natural selection human activities on repertoire Agave angustifolia var. pacifica, an used bacanora (an alcoholic spirit similar tequila) production northwestern Mexico. sampled 34 sites over eleven thousand genome-wide SNPs. found shallow structure among samples, although we detected differentiation between coastal inland sites. Surprisingly, no was populations. Moreover, moderate inbreeding (FIS ~ 0.13) levels genomic diversity agaves. Nevertheless, had almost private alleles presented evidence clonality. The overall low A. pacifica is apparently result high dispersibility promoted by pollinators possibility reproduction. Incipient cultivation history reliance seeds probably responsible observed patterns connectivity considerable samples.

Language: Английский

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Advances in Single-Cell Transcriptome Sequencing and Spatial Transcriptome Sequencing in Plants

Plants, Journal Year: 2024, Volume and Issue: 13(12), P. 1679 - 1679

Published: June 18, 2024

“Omics” typically involves exploration of the structure and function entire composition a biological system at specific level using high-throughput analytical methods to probe analyze large amounts data, including genomics, transcriptomics, proteomics, metabolomics, among other types. Genomics characterizes quantifies all genes an organism collectively, studying their interrelationships impacts on organism. However, conventional transcriptomic sequencing techniques target population cells, results only reflect average expression levels in as they are unable reveal gene heterogeneity spatial individual thus masking specificity between different cells. Single-cell transcriptome cells plant or animal tissues, enabling understanding each cell’s metabolites expressed genes. Consequently, statistical analysis corresponding tissues can be performed, with purpose achieving cell classification, evolutionary growth, physiological pathological analyses. This article provides overview research progress single-cell well applications challenges plants. Furthermore, prospects for development transcriptomics proposed.

Language: Английский

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Genome-Wide Identification and Characterization of Main Histone Modifications in Sorghum Decipher Regulatory Mechanisms Involved by mRNA and Long Noncoding RNA Genes

Journal of Agricultural and Food Chemistry, Journal Year: 2021, Volume and Issue: 69(7), P. 2337 - 2347

Published: Feb. 8, 2021

Post-translational modifications of histones play an important chromatic role a transcript activity in eukaryotes. Even though mRNA and long noncoding RNA (lncRNA) genes share similar biogenetic processes, these classes may differ many ways. However, knowledge about the crosstalk between histone methylations two types sorghum is still ambiguous. In present study, we reveal genome-wide distribution six modifications, namely, di- trimethylation H3K4 (H3K4me2 H3K4me3), H3K27 (H3K27me2 H3K27me3), H3K36 (H3K36me2 H3K36me3) analyze their functional relationships. Unlike other methylation, codecoration H3K4me3 H3K36me3 negatively associated with production lincRNAs context active expression genes. Our data demonstrated that act as complementary component to transcriptional regulatory process. Moreover, observe both are involved negative-going regulation plant lincRNA provide landscape methylation sorghum, decrypt its reciprocity, shed light on roles lncRNA

Language: Английский

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Drivers of genetic differentiation and recent evolutionary history of an Eurasian wild pea

Journal of Biogeography, Journal Year: 2021, Volume and Issue: 49(5), P. 794 - 808

Published: Oct. 25, 2021

Abstract Aim Genetic diversity is a major determinant for the capacity of species to persist and adapt their environments. Unravelling factors affecting genetic differentiation crucial understand how shaped may react changing We investigated drivers interplay with evolutionary history in wild pea test those have affected distribution diversity. Location Mediterranean basin, western Asia. Taxon Pisum sativum (Fabaceae). Methods employed restriction site associated DNA (RAD) sequencing collection 81 samples. The influence environmental on was tested by estimating association these variation using gradient forest analysis. Stairwayplots were used estimate past effective population sizes clines allele frequencies analysed detect expansion patterns. Association single nucleotide polymorphisms variables find signatures local adaptation. Results effect influencing variable among clusters. Climate predictors most important all Land cover more clusters from areas strongly influenced human land use. found statistically significant associations 3623 SNPs variables. Most correlated latitude followed temperature. Wild peas went through bottleneck during last glacial period recovery. detected range patterns suggested an eastward European cluster Turkey thereof southwards eastwards. Main conclusion Drivers do not act uniform manner within species. processes this be viewed context hierarchical structure environment its entities change future.

Language: Английский

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Life in the desert: The impact of geographic and environmental gradients on genetic diversity and population structure of Ivesia webberi

Ecology and Evolution, Journal Year: 2021, Volume and Issue: 11(23), P. 17537 - 17556

Published: Nov. 23, 2021

Abstract For range‐restricted species with disjunct populations, it is critical to characterize population genetic structure, gene flow, and factors that influence functional connectivity among populations in order design effective conservation programs. In this study, we genotyped 314 individuals from 16 extant of Ivesia webberi , a United States federally threatened Great Basin Desert using six microsatellite loci. We assessed the effects Euclidean distance, landscape features, ecological dissimilarity on pairwise distance sampled while also testing for potential relationship between I . diversity vegetative communities. The results show low levels overall ( H e = 0.200–0.441; o 0.192–0.605) high differentiation populations. Genetic was structured along geographic gradient, congruent patterns isolation by distance. Populations near species’ range core have relatively diversity, supporting part central‐marginal pattern, showing some evidence metapopulation dynamic. Peripheral lower significantly higher distances, relatedness. Genotype cluster admixture suggest complex dispersal pattern direction varying landscape. Pairwise strongly correlates elevation, actual evapotranspiration, summer seasonal precipitation, indicating role environment, which observed phenological mismatches support. significant correlation floristic germinated soil seed bank suggests annual regeneration plant communities contribute maintenance

Language: Английский

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Spatial genetic structure of two conifers in a highly human-modified landscape of central Mexico

Tree Genetics & Genomes, Journal Year: 2024, Volume and Issue: 20(5)

Published: Sept. 23, 2024

Language: Английский

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Genetic diversity and structure of an endangered medicinal plant species (Pilocarpus microphyllus) in eastern Amazon: implications for conservation

Conservation Genetics, Journal Year: 2022, Volume and Issue: 23(4), P. 745 - 758

Published: June 4, 2022

Language: Английский

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High genetic diversity but spatially restricted genetic connectivity in a tropical montane cloud forest tree (Magnolia schiedeana)

Tree Genetics & Genomes, Journal Year: 2022, Volume and Issue: 19(1)

Published: Dec. 6, 2022

Language: Английский

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