scholarly journals Contemporary inter-specific hybridization between Cirsium aduncum and C. haussknechtii (Asteraceae): Evidence from molecular and morphological data

Genetika ◽  
2016 ◽  
Vol 48 (2) ◽  
pp. 497-514 ◽  
Author(s):  
Masoud Sheidai ◽  
Mona Naji ◽  
Zahra Noormohammadi ◽  
Maryam Nouroozi ◽  
Somayeh Ghasemzadeh-Baraki
Keyword(s):  
Population Genetic ◽  
Isolation By Distance ◽  
Genetic Difference ◽  
Morphological Difference ◽  
Morphological Data ◽  
Assignment Test ◽  
Specific Gene ◽  
Population Genetic Analysis ◽  
Important Species ◽  
Geographical Regions

Cirsium aduncum Fisch. & C.A.Mey. Ex DC. and C. haussknechtii Boiss., (Asteraceae) are important medicinal plant species that grow in different geographical regions of Iran. We had no knowledge about population genetic structure, intra-specific and inter-specific gene flow and the presence of hybrid zone for this two species in Iran. Therefore, in order to provide data for conservation of these two medicinally important species, the population genetic analysis and morphometric studies were performed in 18 geographical populations of these species. ANOVA and MDS analyses revealed significant morphological difference among the studied populations in either species, while MDS plot showed morphological overlap in plants of these two species. AMOVA test revealed significant genetic difference among the studied populations. Mantel test showed positive significant correlation between genetic and geographical distances and the occurrence of isolation by distance. Population assignment test and STRUCTURE plot of genetic data revealed inter-specific introgression between these species.

scholarly journals Population genetic analysis and evidence of inter-specific introgression in Helichrysum armenium and H. rubicundum (Asteraceae)

Genetika ◽  
2015 ◽  
Vol 47 (2) ◽  
pp. 451-468 ◽  
Author(s):  
Malahat Taban ◽  
Masoud Sheidai ◽  
Zahra Noormohammadi ◽  
Narjes Azizi ◽  
Somayeh Ghasemzadeh-Baraki ◽  
...  
Keyword(s):  
Population Genetic ◽  
Structural Changes ◽  
Genetic Difference ◽  
Genetic Admixture ◽  
Specific Gene ◽  
Population Genetic Study ◽  
Population Genetic Analysis ◽  
Closely Related Species ◽  
Geographical Populations ◽  
Genetic Stratification

Helichrysum armenium and H. rubicundum are two medicinally important plants of Iran that are distributed in various regions of the country. They are extensively used by locals as medicinal plants and a great negative selection pressure is applied on them. Therefore, due to importance of these plant species, we performed a population genetic study in both species. For this study, we used 66 randomly collected plants from 24 geographical populations of Helichrysum armenium and H. rubicundu. These species had areas of overlap and contact and we found some intermediate plants that were included in our study too. UPGMA and MDS analyses revealed morphological separation of these closely related species and placed intermediate plants in an intermediate position. ISSR analysis revealed inter-population genetic diversity and K-Means clustering and STRUCTURE analyses revealed populations. Genetic stratification in both species. Genetic difference of the studied populations was not correlated to geographical distance. Triangle plot of Bayesian analysis and NeighborNet plot showed inter-specific gene flow. The studied populations showed plants with 2n = 2x = 14 and 2n = 4x = 28 chromosomes and differed significantly in their meiotic behavior. Therefore, a combination of genetic stratification, and genetic admixture as well as polyploidy and chromosomes structural changes, have played rule in Helichrysum diversification.

scholarly journals Authentication, genetic fingerprinting and assessing relatedness of rice (Oryza Sativa) genotypes by SSR molecular markers

Caryologia ◽  
2021 ◽  
Vol 74 (1) ◽  
pp. 13-22
Author(s):  
Neda Sepahian ◽  
Zahra Noourmohammadi ◽  
Masoud Sheidai ◽  
Hamid-Reza Zamanizadeh
Keyword(s):  
Oryza Sativa ◽  
Molecular Markers ◽  
Genetic Relatedness ◽  
Isolation By Distance ◽  
Genetic Difference ◽  
Rice Cultivars ◽  
Geographical Regions ◽  
Ssr Loci ◽  
Rice Samples ◽  
Rice Genotypes

Rice (Oryza sativa L.), is a staple food and cash crop in many countries and studies on geneticstructure and differentiation patterns of rice land races along with the cultivated rice, provide important data for future rice breeding. Therefore, the aims of present investigation were 1-To study the genetic diversity present withinIranian rice genotypes, 2-To study genetic relatedness of these rice genotypes, and 3-To providebarcoding of the rice genotypes based on SSR molecular markers and produce data for rice varieties authentication. In total, 201 rice samples originated from 10 geographical regions of Iran were studied in this project. All rice samples underwent fragment analysis in every 64 SSR loci and different clustering and ordination methods performed. In general four major clusters were formed. Both landraces as well as rice cultivars were distributed in different clusters due to their genetic difference. STRUCTURE analysis of the studied genotypes followed by Evanno test produced the optimal number of genetic groups K = 2. The mean Nm = 13.6, for the studied genotypes indicates that a high degree of gene flow/ancestral common alleles are present in the rice genotypes studied. Mantel test indicated a significant positive association between genetic distance and geographic distance of the rice genotype studied and presence of an overall isolation by distance (IBD) model of differentiation across the geographical regions of Iran. Overall, the significant genetic difference observed between rice landraces and rice cultivars ofthe country may be used in future hybridization and breeding of rice in the country. The landracerice genotypes may contain useful genes to be transferred to the popular rice cultivars. Moreover, SSR loci that can differentiate rice genotypes are identified and can be used in rice cultivars authentication.

scholarly journals Population genetic diversity and structure in Ziziphora tenuior L.: Identification of potential gene pools

Genetika ◽  
2016 ◽  
Vol 48 (2) ◽  
pp. 565-578
Author(s):  
Raheleh Tabaripoor ◽  
Masoud Sheidai ◽  
Seyyed Talebi ◽  
Zahra Noormohammadi
Keyword(s):  
Genetic Diversity ◽  
Population Genetic ◽  
Isolation By Distance ◽  
Genetic Difference ◽  
Gene Pools ◽  
Diversity Analysis ◽  
Genetic Diversity And Structure ◽  
Main Gene ◽  
Geographical Populations ◽  
Issr Molecular Markers

Ziziphora tenuior L. is a medicinal plant species of the genus Ziziphora (Labiatae) that grows in different areas of Iran. In order to study the population genetic structure in Ziziphora tenuior, we collected 107 plant specimens from 20 geographical populations that are located in 17 provinces. ISSR molecular markers were used for genetic diversity analysis. The populations studied revealed intra- and inter-population genetic variability. AMOVA test showed significant genetic difference among the studied populations. STRUCTURE plot identified two main gene pools for Ziziphora tenuior in Iran. These populations showed isolation by distance and restrict gene flow occurred among them.

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

Rhodnius pallescens microsatellite markers for population genetic analysis in Rhodnius ecuadoriensis: preliminary assessment

2019 ◽  
Vol 40 (2) ◽  
Author(s):  
Mario J. Grijalva
Keyword(s):  
Genetic Analysis ◽  
Microsatellite Markers ◽  
Population Genetic ◽  
Preliminary Assessment ◽  
Population Genetic Analysis ◽  
Rhodnius Ecuadoriensis ◽  
Rhodnius Pallescens

Rhodnius ecuadoriensis Lent & León (Hemiptera: Reduviidae) es el prinicipal vector de    la enfermedad de Chagas en Ecuador, donde la estructura genética de sus poblaciones es poco conocida. Nosotros probamos seis Repeticiones Cortas en Tamdem (RCT) de R. pallescens Barber en poblaciones selváticas y domésticas de R. ecuadoriensis. Dos microsatelites fueron monomórficos, dos dieron resultados ambiguos y dos fueron polimórficos (16 y 19 alelos) y fueron utilizados para análisis. Los resultados de las frecuencias alélicas, AMOVA y los pruebas Bayesianas para genética favorecen la teorí­a de la existencia de una sola población. Estos resultados preliminares sugieren que las poblaciones selváticas y domésticas d R. ecuadoriensis intercambian frecuentemente migrantes. Por consiguiente el control de la Enfermedad de Chagas requiere vigilancia entomológica continua en la costa del Ecuador.

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