Species identification, genetic diversity and population structure of sweet cherry commercial cultivars assessed by SSRs and the gametophytic self-incompatibility locus

2018 ◽  
Vol 237 ◽  
pp. 28-35 ◽  
Author(s):  
Congli Liu ◽  
Xiliang Qi ◽  
Lulu Song ◽  
Yuhong Li ◽  
Ming Li
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Species Identification ◽  
Sweet Cherry ◽  
Self Incompatibility ◽  
Commercial Cultivars ◽  
Incompatibility Locus

scholarly journals Population structure and genetic bottleneck in sweet cherry estimated with SSRs and the gametophytic self-incompatibility locus

BMC Genetics ◽  
2010 ◽  
Vol 11 (1) ◽  
Author(s):  
Stéphanie Mariette ◽  
Muriel Tavaud ◽  
Uraiwan Arunyawat ◽  
Gaëlle Capdeville ◽  
Muriel Millan ◽  
...  
Keyword(s):  
Population Structure ◽  
Sweet Cherry ◽  
Genetic Bottleneck ◽  
Self Incompatibility ◽  
Incompatibility Locus

scholarly journals Balancing selection and the crossing of fitness valleys in structured populations: diversification in the gametophytic self-incompatibility system

2021 ◽  
Author(s):  
Roman Stetsenko ◽  
Thomas Brom ◽  
Vincent Castric ◽  
Sylvain Billiard
Keyword(s):  
Population Structure ◽  
Allelic Diversity ◽  
Structured Populations ◽  
The Self ◽  
Population Subdivision ◽  
Island Population ◽  
Single Mutation ◽  
Self Incompatibility ◽  
S Locus ◽  
Incompatibility Locus

The self-incompatibility locus (S-locus) of flowering plants displays a striking allelic diversity. How such a diversity has emerged remains unclear. In this paper, we performed numerical simulations in a finite island population genetics model to investigate how population subdivision affects the diversification process at a S-locus, given that the two-genes architecture typical of S-loci involves the crossing of a fitness valley. We show that population structure increases the number of self-incompatibility haplotypes (S-haplotypes) maintained in the whole metapopulation, but at the same time also slightly reduces the parameter range allowing for their diversification. This increase is partly due to a reinforcement of the diversification and replacement dynamics of S-haplotypes within and among demes. We also show that the two-genes architecture leads to a higher diversity compared with a simpler genetic architecture where new S-haplotypes appear in a single mutation step. We conclude that population structure helps explain the large allelic diversity at the self-incompatibility locus. Overall, our results suggest that population subdivision can act in two opposite directions: it makes easier S-haplotypes diversification but increases the risk that the SI system is lost.

scholarly journals Spatial Genetic Structure within Populations of Sorbus torminalis (L.) Crantz: Comparative Analysis of the Self-incompatibility Locus and Nuclear Microsatellites

2016 ◽  
Vol 58 (1) ◽  
pp. 7-17 ◽  
Author(s):  
Sandra Jankowska-Wroblewska ◽  
Joanna Warmbier ◽  
Jaroslaw Burczyk
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Population Differentiation ◽  
Spatial Genetic Structure ◽  
Population History ◽  
The Self ◽  
Nuclear Microsatellites ◽  
Self Incompatibility ◽  
Sorbus Torminalis ◽  
Incompatibility Locus

AbstractDistribution of genetic diversity among and within plant populations may depend on the mating system and the mechanisms underlying the efficiency of pollen and seed dispersal. In self-incompatible species, negative frequency-dependent selection acting on the self-incompatibility locus is expected to decrease intensity of spatial genetic structure (SGS) and to reduce population differentiation. We investigated two populations (peripheral and more central) of wild service tree (Sorbus torminalis(L.) Crantz), a self-incompatible, scattered tree species to test the differences in population differentiation and spatial genetic structure assessed at the self-incompatibility locus and neutral nuclear microsatellites. Although, both populations exhibited similar levels of genetic diversity regardless of the marker type, significant differentiation was noticed. Differences betweenFSTandRSTsuggested that in the case of microsatellites both mutations and drift were responsible for the observed differentiation level, but in the case of theS-RNaselocus drift played a major role. Microsatellites indicated a similar and significant level of spatial genetic structure in both populations; however, at theS-RNaselocus significant spatial genetic structure was found only in the fragmented population located at the north-eastern species range limits. Differences in SGS between the populations detected at the self-incompatibility locus were attributed mainly to the differences in fragmentation and population history.

scholarly journals Species identification and population structure analysis in Geranium subg. Geranium (Geraniaceae)

Hacquetia ◽  
2018 ◽  
Vol 17 (2) ◽  
pp. 235-246 ◽  
Author(s):  
Somayeh Esfandani-Bozchaloyi ◽  
Masoud Sheidai ◽  
Maryam Keshavarzi ◽  
Zahra Noormohammadi
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Genetic Structure ◽  
Species Identification ◽  
Structure Analysis ◽  
Issr Markers ◽  
Morphological Studies ◽  
Population Structure Analysis ◽  
The World

AbstractSpecies identification is fundamentally important within the fields of biology, biogeography, ecology and conservation. The genusGeraniumL. (Geraniaceae) comprises about 430 species distributed throughout most parts of the world. According to the most recent treatments, subg.Geraniumis the largest subgenus with over 370 species classified in ten sections. The subg.Geraniumis represented in Iran by 13 species. These species are grouped 3 sections. In spite vast distribution of manyGeraniumspecies that grow in Iran, there are not any available report on their genetic diversity, mode of divergence and patterns of dispersal.Therefore, we performed molecular (ISSR markers) and morphological studies of 102 accessions from 13 species ofGeranium(subg.Geranium) that were collected from different habitats in Iran. The aims of present study are: 1) can ISSR markers identifyGeraniumspecies, 2) what is the genetic structure of these taxa in Iran, and 3) to investigate the species inter-relationship? The present study revealed that combination of morphological and ISSR data can identify the species.

Genetic diversity and population structure of Populus yunnanensis revealed by SSR markers

2020 ◽  
Vol 52 (6) ◽  
Author(s):  
Anpei Zhou ◽  
Dan Zong ◽  
Peihua Gan ◽  
Yao Zhang ◽  
Dan Li ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Ssr Markers
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