Insights from genetic research: SNP analyses confirm white clover naturalization in Brazil

Genetic Resources and Crop Evolution, Год журнала: 2024, Номер unknown

Опубликована: Май 21, 2024

Язык: Английский

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High genetic diversity and low population differentiation of a medical plant Ficus hirta Vahl., uncovered by microsatellite loci: implications for conservation and breeding

BMC Plant Biology, Год журнала: 2022, Номер 22(1)

Опубликована: Июль 12, 2022

Wuzhimaotao (Radix Fici Hirtae) originates from the dry root of Ficus hirta (Moraceae), which is widely known as a medical and edible plant distributed in South China. As increasing demand for Wuzhimaotao, wild F. has been extremely reduced during past years. It urgent to protect rationally develop resources its sustainable utilization. However, lack genetic background makes it difficult plan conservation breeding strategies this plant. In present study, total 414 accessions 7 provinces southern China were evaluated population genetics using 9 polymorphic SSR markers.A mean 17.1 alleles per locus was observed. The expected heterozygosity (He) varied 0.142 0.861 (mean = 0.706) nine loci. High diversity (He 0.706, ranged 0.613 0.755) low differentiation among populations (G'ST 0.147) revealed at level. addition, analysis molecular variance (AMOVA) indicated that principal existed within (96.2%) significantly higher than (3.8%). Meanwhile, three kinds clustering methods (STRUCTURE, PCoA UPGMA) suggested sampled clustered into two main groups (K 2). Mantel test showed significant correlation between geographic distance (R2 0.281, P < 0.001). Pollen flow, seed flow and/or geographical barriers might be factors formed current patterns populations.This comprehensive study structure We high medicinal clarified causes patterns. Our will provide novel insights exploitation hirta.

Язык: Английский

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Extinction risk of Chinese angiosperms varies between woody and herbaceous species

Diversity and Distributions, Год журнала: 2022, Номер 29(2), С. 232 - 243

Опубликована: Ноя. 15, 2022

Abstract Aim Understanding how species' traits and environmental contexts relate to extinction risk is a critical priority for ecology conservation biology. This study aims identify explore factors related between herbaceous woody angiosperms facilitate more effective management strategies understand the interactions threats traits. Location China. Taxon Angiosperms. Methods We obtained large dataset including five traits, six extrinsic variables, 796,118 occurrence records 14,888 Chinese angiosperms. assessed phylogenetic signal used generalized least squares regressions relationships risk, plant variables in also path analysis evaluate causal among climate of different growth forms. Results The differed species. Angiosperm was mainly affected by form, altitude, mean annual temperature, normalized difference vegetation index, precipitation change from 1901 2020. Woody strongly height precipitation, whereas species temperature rather than Main conclusions were likely have higher risks under threat levels varied with both variables. we uncovered may help protect threatened ecosystems that rely on them.

Язык: Английский

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Genetic diversity and population structure of Caryopteris mongholica revealed by reduced representation sequencing

BMC Plant Biology, Год журнала: 2022, Номер 22(1)

Опубликована: Июнь 17, 2022

Abstract Background Caryopteris mongholica Bunge is a rare broad-leaved shrub distributed in the desert and arid regions of Mongol North China. Due to land reclamation, natural habitat deterioration anthropogenic activities recent years, wild resources have sharply reduced. To effectively protect rationally use it, we investigated genetic diversity population structure from 18 populations across range C. China by reduced representation sequencing technology. Results We found overall average values observed heterozygosity ( Ho ), expected He nucleotide π ) were 0.43, 0.35 0.135, respectively. Furthermore, NM17 exhibited higher than other populations. The phylogenetic tree, principal component analysis (PCA) showed sampled individuals clustered into two main groups. NM03 population, with both groups, may be transitional located between In addition, most variation existed within (90.97%) compared that among (9.03%). Interestingly, geographic environmental distances almost equally important differences. Redundancy (RDA) identified optical radiation (OR), minimum temperature (MIT) mean annual precipitation (MAP) related variables as environment factors influencing variation, importance MIT was also confirmed latent factor mixed models (LFMM). Conclusions results this study facilitate research on . These features provided vital information for conserving sustainably developing resources.

Язык: Английский

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Genetic diversity and structure of the narrow endemicSeseli farrenyi(Apiaceae): implications for translocation

PeerJ, Год журнала: 2021, Номер 9, С. e10521 - e10521

Опубликована: Фев. 4, 2021

Seseli farrenyi (Apiaceae) is an extremely narrow endemic plant, which considered as one of the species most conservation concern in Catalonia (NW Mediterranean Basin). Given accelerated fragmentation and reduction population size (of over 90%), environmental agency currently preparing a recovery plan that includes reinforcements extant populations. The present study aimed at providing necessary knowledge to carry out genetically-informed translocations, by using microsatellites genetic markers. Fourteen have been specifically developed for S. , nine used. Besides natural populations, three ex situ collections are known exist this also studied, they would be donor sources translocation activities. Our main finding levels diversity populations still high ( H e = 0.605), likely result predominantly outcrossing mating system combination with limited time elapsed since decline. However, showing first signs, values differentiation relatively high, two well-differentiated lineages found even such geographic range. These results provide important information when designing management measures.

Язык: Английский

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Insights from Genetic Studies: SNP Analyses Confirm White Clover Naturalization in Brazil

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Фев. 12, 2024

Abstract White clover ( Trifolium repens ) is a stoloniferous legume herb native to Eurasia, which had been introduced and spread globally. In Brazil, it was as forage crop. While previous studies focused mainly on its agricultural benefits, much remains unclear about territorial dynamics, introduction process potential threats in Brazil. This study aims estimate the genetic diversity of naturalized white populations Brazil assess influence cultivars into these populations’ diversity. Through MIG-Seq analysis, 1097 SNPs show that Brazilian have 94% within-population variation. Additionally, two mountainous areas clustered together, while rural urban formed second cluster. Cultivars are less diverse 27% their variability between them. We found some admixture with cultivated varieties, more isolated were singular background. can conclude possible parts originally native, brought during European immigration, others appear similar cultivar ancestry, indicating biological escapes from populations. Considering ecological data our findings, confirmed indeed

Язык: Английский

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Contrasting demographic history and mutational load in three threatened whitebark pines (Pinus subsect. Gerardianae): implications for conservation

The Plant Journal, Год журнала: 2024, Номер 119(6), С. 2967 - 2981

Опубликована: Авг. 8, 2024

SUMMARY Demographic history and mutational load are of paramount importance for the adaptation endangered species. However, effects population evolutionary genetic on adaptive potential in conifers remain unclear. Here, using transcriptome sequencing, whole chloroplast genomes mitochondrial DNA markers, combined with niche analysis, we determined demographic three threatened whitebark pines having different statuses, Pinus bungeana , P. gerardiana squamata . inference indicated that severe bottlenecks occurred all at times, coinciding periods major climate geological changes; contrast, while experienced a recent expansion, maintained small sizes after bottlenecking. Abundant homozygous‐derived variants accumulated pines, particularly species most heterozygous was moderately few highly deleterious pine have ( ), likely because purging effects. Finally, modeling showed distribution might experience significant expansion future, species' identified clusters also supported by differences ecological niche. The integration genomic, data has allowed us to prove contrasting patterns load, which may important implications their thus key informing conservation planning.

Язык: Английский

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Non-linear Response to Cell Number Revealed and Eliminated From Long-Term Tracheid Measurements of Scots Pine in Southern Siberia

Frontiers in Plant Science, Год журнала: 2021, Номер 12

Опубликована: Окт. 4, 2021

Dendroclimatic research offers insight into tree growth-climate response as a solution to the forward problem and provides reconstructions of climatic variables products reverse problem. Methodological developments in dendroclimatology have led inclusion variety growth parameters this field. Tree-ring traits developed during short time intervals growing season can potentially provide finer temporal scale both dendroclimatic applications offer better understanding mechanisms reaction variations. Furthermore, transition from classical studies based on single integral variable (tree-ring width) modern multitude quantitative (e.g., wood anatomical structure) adds lot complexity, which mainly arises intrinsic feedbacks between muddles seasonality registered signal. This study utilized life-long measurements 150- 280-year-old trees Pinus sylvestris L. moisture-sensitive habitat forest-steppe Southern Siberia (Russia) investigate eliminate legacy effect cell production tracheid traits. Anatomical were calculated describe results three main subsequent stages conifer xylem development, namely, number per radial file ring, mean maximum diameter, cell-wall thickness. Although tree-ring width was almost directly proportional number, non-linear relationships with revealed measurements. They exhibited stronger relationship areas narrow rings stable structure wider rings. The exponential models proposed demonstrated these numerical terms morphometric meaning. ratio their modeled values used develop long-term chronologies, proved retain information about fluctuations independent (cell number), despite decreased common

Язык: Английский

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Ecological niche modeling applied to the conservation of the East Asian relict endemism Glyptostrobus pensilis (Cupressaceae)

New Forests, Год журнала: 2022, Номер 54(6), С. 1131 - 1152

Опубликована: Дек. 30, 2022

Abstract Glyptostrobus pensilis (Cupressaceae) is the only surviving species of genus . Although widely cultivated throughout China, in wild it occurs as small stands southeastern central Laos, and southern Vietnam. However, its low genetic variability, lack recruitment, progressive destruction habitat caused by humans, have meant that populations are showing a clear declining trend whole threatened. Ecological niche modeling used here to study present potential distribution, well future (2061–2080) using several global circulation models under two shared socioeconomic pathways (SSP 126 SSP 585) being produce IPCC Sixth Assessment Report. The current area G. 1,452,481 km 2 with areas greatest probability presence located China. This reduced for according most models, greater losses 585 scenario. Between 6.9 31.3% all would be outside (including Lao populations, which harbor highest levels variability). Conservation measures include expansion network protected (since over 90% do not occur within them), development propagation techniques, carrying out translocation activities should require international collaboration among countries found. With knowledge, we reassessed threat status IUCN criteria, downgrading from CR EN both China at level.

Язык: Английский

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A review on Q_ST–F_ST comparisons of seed plants: Insights for conservation

Ecology and Evolution, Год журнала: 2023, Номер 13(3)

Опубликована: Март 1, 2023

Abstract Increased access to genome‐wide data provides new opportunities for plant conservation. However, information on neutral genetic diversity in a small number of marker loci can still be valuable because genomic are not available most rare species. In the hope bridging gap between conservation science and practice, we outline how practitioners more efficiently employ population We first review current knowledge about variation (NGV) adaptive (AGV) seed plants, regarding both within‐population among‐population components. then introduce estimates differentiation quantitative traits ( Q ST ) markers F biology summarize applications derived from – comparisons, particularly capture AGV NGV in‐situ ex‐situ programs. Based published studies, found that, average, two four populations would needed woody perennials n = 18) 99% AGV, respectively, whereas case herbaceous 14). On is 3.6, 1.5, 1.1 times greater than annuals, perennials, respectively. Hence, management policies or suggestions based solely inference could misleading, To maximize preservation maximum levels NGV, suggest using rather average . recommend managers consider this when formulating further restoration plans species,

Язык: Английский

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