Genetic diversity and structure of Libanotis buchtormensis (Fisch.) DC. in disjunct populations along the bilateral sides of deserts in northwestern China

2015 ◽  
Vol 301 (9) ◽  
pp. 2219-2230 ◽  
Author(s):  
Ping Wang ◽  
Min Zhang ◽  
Jianjun Liu ◽  
Langran Xu ◽  
Wei Liu
Keyword(s):  
Genetic Diversity ◽  
Northwestern China ◽  
Genetic Diversity And Structure ◽  
Disjunct Populations

scholarly journals Spatial Genetic Structure of Prunus mongolica in Arid Northwestern China Based on RAD Sequencing Data

Diversity ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 397
Author(s):  
Hong-Xiang Zhang ◽  
Qian Wang ◽  
Zhi-Bin Wen
Keyword(s):  
Genetic Diversity ◽  
Habitat Fragmentation ◽  
Northwestern China ◽  
Distribution Model ◽  
Geographical Isolation ◽  
Marginal Populations ◽  
Arid Northwestern China ◽  
Distribution Ranges ◽  
Genetic Diversity And Structure ◽  
Low Levels

The extensive range of sand deserts, gravel deserts, and recent human activities have shaped habitat fragmentation of relict and endangered plants in arid northwestern China. Prunus mongolica is a relict and endangered shrub that is mainly distributed in the study area. In the present study, population genomics was integrated with a species distribution model (SDM) to investigate the spatial genetic diversity and structure of P. mongolica populations in response to habitat fragmentation and create a proposal for the conservation of this endangered species. The results showed that the northern marginal populations were the first isolated from other populations. The SDM suggested that these marginal populations had low levels of habitat suitability during the glacial period. They could not obtain migration corridors, and thus possessed low levels of gene flow connection with other populations. Additionally, several populations underwent secondarily geographical isolation from other central populations, which preserved particular genetic lineages. Genetic diversity was higher in southern populations than in northern ones. It was concluded that long-term geographical isolation after historical habitat fragmentation promoted the divergence of marginal populations and refugial populations along mountains from other populations. The southern populations could have persisted in their distribution ranges and harbored higher levels of genetic diversity than the northern populations, whose distribution ranges fluctuated in response to paleoclimatic changes. We propose that the marginal populations of P. mongolica should be well considered in conservation management.

scholarly journals Genetic diversity and population structure of Plasmodium falciparum in Nigeria: insights from microsatellite loci analysis

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Fehintola V. Ajogbasile ◽  
Adeyemi T. Kayode ◽  
Paul E. Oluniyi ◽  
Kazeem O. Akano ◽  
Jessica N. Uwanibe ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Plasmodium Falciparum ◽  
Population Structure ◽  
Microsatellite Loci ◽  
Control Strategies ◽  
Population Diversity ◽  
Parasite Population ◽  
Nested Polymerase Chain Reaction ◽  
Public Health Burden ◽  
Genetic Diversity And Structure

Abstract Background Malaria remains a public health burden especially in Nigeria. To develop new malaria control and elimination strategies or refine existing ones, understanding parasite population diversity and transmission patterns is crucial. Methods In this study, characterization of the parasite diversity and structure of Plasmodium falciparum isolates from 633 dried blood spot samples in Nigeria was carried out using 12 microsatellite loci of P. falciparum. These microsatellite loci were amplified via semi-nested polymerase chain reaction (PCR) and fragments were analysed using population genetic tools. Results Estimates of parasite genetic diversity, such as mean number of different alleles (13.52), effective alleles (7.13), allelic richness (11.15) and expected heterozygosity (0.804), were high. Overall linkage disequilibrium was weak (0.006, P < 0.001). Parasite population structure was low (Fst: 0.008–0.105, AMOVA: 0.039). Conclusion The high level of parasite genetic diversity and low population structuring in this study suggests that parasite populations circulating in Nigeria are homogenous. However, higher resolution methods, such as the 24 SNP barcode and whole genome sequencing, may capture more specific parasite genetic signatures circulating in the country. The results obtained can be used as a baseline for parasite genetic diversity and structure, aiding in the formulation of appropriate therapeutic and control strategies in Nigeria.

scholarly journals Genetic diversity and structure of the endemic and endangered species Aristolochia delavayi growing along the Jinsha River

2021 ◽  
Author(s):  
Yu-Long Yu ◽  
Hui-Chun Wang ◽  
Zhi-Xiang Yu ◽  
Johann Schinnerl ◽  
Rong Tang ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Endangered Species ◽  
Jinsha River ◽  
Genetic Diversity And Structure

Genetic diversity and structure among Iranian tall fescue populations based on genomic-SSR and EST-SSR marker analysis

2009 ◽  
Vol 282 (1-2) ◽  
pp. 57-70 ◽  
Author(s):  
Majid Sharifi Tehrani ◽  
Mohsen Mardi ◽  
Jamal Sahebi ◽  
Pilar Catalán ◽  
Antonio Díaz-Pérez
Keyword(s):  
Genetic Diversity ◽  
Tall Fescue ◽  
Ssr Marker ◽  
Marker Analysis ◽  
Genetic Diversity And Structure ◽  
Genomic Ssr

scholarly journals The use of esterase polymorphism for analysis of the genetic diversity and structure of stevia (Stevia rebaudiana Bert. Bertoni) populations

2011 ◽  
Vol 39 (4-6) ◽  
pp. 594-599 ◽  
Author(s):  
Vanda Marilza de Carvalho ◽  
Carlos Alexandre Marochio ◽  
Claudete Aparecida Mangolin ◽  
Maria de Fátima Pires da Silva Machado
Keyword(s):  
Genetic Diversity ◽  
Stevia Rebaudiana ◽  
Genetic Diversity And Structure ◽  
Esterase Polymorphism
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