scholarly journals Species Delimitation of Asteropyrum (Ranunculaceae) Based on Morphological, Molecular, and Ecological Variation

2021 ◽  
Vol 12 ◽  
Author(s):  
Shanmei Cheng ◽  
Weidong Zeng ◽  
Jing Wang ◽  
Lei Liu ◽  
Hua Liang ◽  
...  
Keyword(s):  
Population Genetic ◽  
Phylogenetic Reconstruction ◽  
Perennial Herb ◽  
Ecological Niches ◽  
Population Genetic Analysis ◽  
Genomic Studies ◽  
Genetic Clusters ◽  
Small Genus ◽  
Wide Population ◽  
Shape And Size

Objectively evaluating different lines of evidence within a formalized framework is the most efficient and theoretically grounded approach for defining robust species hypotheses. Asteropyrum Drumm. et Hutch. is a small genus of perennial herb containing two species, A. cavaleriei and A. peltatum. The distinction of these two species mainly lies in the shape and size of leaf blades. However, these characters have been considered labile and could not differentiate the two species reliably. In this study, we investigated the variation of the leaf blades of 28 populations across the whole range of Asteropyrum using the landmark-based geometric morphometrics (GMM), sought genetic gaps within this genus using DNA barcoding, phylogenetic reconstruction and population genetic methods, and compared the predicted ecological niches of the two species. The results showed that the leaf form (shape and size) was overlapped between the two species; barcode gap was not detected within the genus Asteropyrum; and little ecological and geographical differentiation was found between the two taxa. Two genetic clusters detected by population genetic analysis did not match the two morphospecies. The results suggest that there are no distinct boundaries between the two species of Asteropyrum in terms of morphology, genetics and ecology and this present classification should be abandoned. We anticipate that range-wide population genomic studies would properly delineate the species boundaries and help to understand the evolution and speciation within Asteropyrum.

scholarly journals Revisiting demographic processes in cattle with genome-wide population genetic analysis

2015 ◽  
Vol 6 ◽  
Author(s):  
Pablo Orozco-terWengel ◽  
Mario Barbato ◽  
Ezequiel Nicolazzi ◽  
Filippo Biscarini ◽  
Marco Milanesi ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Population Genetic ◽  
Population Genetic Analysis ◽  
Genome Wide ◽  
Demographic Processes ◽  
Wide Population

Development of microsatellite markers for, and a preliminary population genetic analysis of, the white-backed planthopper

2014 ◽  
Vol 104 (6) ◽  
pp. 765-773 ◽  
Author(s):  
J.-T. Sun ◽  
X.-Y. Jiang ◽  
M.-M. Wang ◽  
X.-Y. Hong
Keyword(s):  
Expressed Sequence Tags ◽  
Population Differentiation ◽  
Population Genetic ◽  
Long Distance ◽  
Population Genetic Analysis ◽  
Expected Heterozygosity ◽  
Genetic Clusters ◽  
Polymerase Chain ◽  
Expressed Sequence ◽  
Bayesian Cluster

AbstractFor a better understanding of the population structure and dispersal rates of Sogatella furcifera, we developed 21 novel polymorphic expressed sequence tags (EST) derived microsatellites, which were successfully amplified in four multiplex polymerase chain reaction sets. These new microsatellites were firstly assessed in 20 individuals sampled from Wenshan in China. The results showed that all 21 loci were highly polymorphic; the number of alleles ranged from 3 to 9, with an average of 4.8 alleles per locus. The observed and expected heterozygosity ranged from 0.200 to 0.900 and from 0.184 to 0.799, respectively. Nineteen of the 21 microsatellites without null allele, were subsequently used for population genetic structure analyses of five S. furcifera populations sampled in south region of China (sites up to 1314 kilometers apart). The observed and expected heterozygosity for each population ranged from 0.436 to 0.494 and from 0.454 to 0.482, respectively. The level of population differentiation was very low, with an average pairwise FST of 0.002. Bayesian cluster analysis result suggested that the five S. furcifera populations formed one genetic cluster. Discriminant analysis of principle components detected three genetic clusters. The spread of the three clusters across the five populations explained the lack of population differentiation and the Bayesian cluster result. All the results indicated that long-distance migration of this pest allowed genetic mixing between populations from remote geographical origins. These new microsatellites will be powerful tools for population genetics studies of S. furcifera.

scholarly journals Adaptive Evolution of Relish, a Drosophila NF-κB/IκB Protein

Genetics ◽  
2000 ◽  
Vol 154 (3) ◽  
pp. 1231-1238 ◽  
Author(s):  
David J Begun ◽  
Penn Whitley
Keyword(s):  
Immune Response ◽  
Innate Immunity ◽  
Genetic Analysis ◽  
Adaptive Evolution ◽  
Strong Evidence ◽  
Population Genetic ◽  
Microbial Pathogens ◽  
Population Genetic Analysis ◽  
Evolutionary Conflict ◽  
A Site

Abstract NF-κB and IκB proteins have central roles in regulation of inflammation and innate immunity in mammals. Homologues of these proteins also play an important role in regulation of the Drosophila immune response. Here we present a molecular population genetic analysis of Relish, a Drosophila NF-κB/IκB protein, in Drosophila simulans and D. melanogaster. We find strong evidence for adaptive protein evolution in D. simulans, but not in D. melanogaster. The adaptive evolution appears to be restricted to the IκB domain. A possible explanation for these results is that Relish is a site of evolutionary conflict between flies and their microbial pathogens.

Population genetic analysis of Enterocytozoon bieneusi in humans

2012 ◽  
Vol 42 (3) ◽  
pp. 287-293 ◽  
Author(s):  
Wei Li ◽  
Vitaliano Cama ◽  
Yaoyu Feng ◽  
Robert H. Gilman ◽  
Caryn Bern ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Population Genetic ◽  
Enterocytozoon Bieneusi ◽  
Population Genetic Analysis

scholarly journals Population genetic analysis and phylogeny reconstruction in Eucalyptus (Myrtaceae) using high-throughput, genome-wide genotyping

2011 ◽  
Vol 59 (1) ◽  
pp. 206-224 ◽  
Author(s):  
Dorothy A. Steane ◽  
Dean Nicolle ◽  
Carolina P. Sansaloni ◽  
César D. Petroli ◽  
Jason Carling ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
High Throughput ◽  
Population Genetic ◽  
Phylogeny Reconstruction ◽  
Population Genetic Analysis ◽  
Genome Wide
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