scholarly journals Heterogeneous geographic patterns of nucleotide sequence diversity between two alcohol dehydrogenase genes in wild barley (Hordeum vulgare subspecies spontaneum)

2001 ◽  
Vol 98 (2) ◽  
pp. 531-536 ◽  
Author(s):  
J.-Z. Lin ◽  
A. H. D. Brown ◽  
M. T. Clegg
Keyword(s):  
Hordeum Vulgare ◽  
Nucleotide Sequence ◽  
Alcohol Dehydrogenase ◽  
Wild Barley ◽  
Sequence Diversity ◽  
Geographic Patterns ◽  
Nucleotide Sequence Diversity

scholarly journals The Influence of Linkage and Inbreeding on Patterns of Nucleotide Sequence Diversity at Duplicate Alcohol Dehydrogenase Loci in Wild Barley (Hordeum vulgaressp. spontaneum)

Genetics ◽  
2002 ◽  
Vol 162 (4) ◽  
pp. 2007-2015 ◽  
Author(s):  
Jing-Zhong Lin ◽  
Peter L Morrell ◽  
Michael T Clegg
Keyword(s):  
Linkage Disequilibrium ◽  
Nucleotide Sequence ◽  
Alcohol Dehydrogenase ◽  
Wild Barley ◽  
Random Mating ◽  
Sequence Diversity ◽  
Grass Species ◽  
Selective Sweeps ◽  
Nucleotide Sequence Diversity ◽  
Hordeum Vulgare Ssp

AbstractPatterns of nucleotide sequence diversity are analyzed for three duplicate alcohol dehydrogenase loci (adh1-adh3) within a species-wide sample of 25 accessions of wild barley (Hordeum vulgare ssp. spontaneum). The adh1 and adh2 loci are tightly linked (recombination fraction <0.01) while the adh3 locus is inherited independently. Wild barley is predominantly self-fertilizing (∼98%), and as a consequence, effective recombination is restricted by the extreme reduction in heterozygosity. Large reductions in effective recombination, in turn, widen the conditions for linkage to influence nucleotide sequence diversity through the action of selective sweeps or background selection. These considerations would appear to predict (1) homogeneity in patterns of nucleotide sequence diversity, especially between closely linked loci, and (2) extensive linkage disequilibrium relative to random-mating species. In contrast to these expectations, the wild barley data reveal heterogeneity in patterns of nucleotide sequence diversity and levels of linkage disequilibrium that are indistinguishable from those observed at adh1 in maize, an outbreeding grass species.

Evolutionary Diversity in the Intracellular Microsporidian Parasite Nosema sp. Infecting Wild Silkworm Revealed by IGS Nucleotide Sequence Diversity

2020 ◽  
Vol 88 (4) ◽  
pp. 345-360
Author(s):  
Wazid Hassan ◽  
Basavaraju Surendra Nath ◽  
Kangayam M. Ponnuvel ◽  
Rakesh K. Mishra ◽  
Appukuttan Nair R. Pradeep
Keyword(s):  
Nucleotide Sequence ◽  
Sequence Diversity ◽  
Microsporidian Parasite ◽  
Nucleotide Sequence Diversity ◽  
Wild Silkworm

scholarly journals Nucleotide Sequence Diversity of Floral Pigment Genes in Mexican Populations of Ipomoea purpurea (Morning Glory) Accord with a Neutral Model of Evolution

2012 ◽  
Vol 103 (6) ◽  
pp. 863-872 ◽  
Author(s):  
Ana M. Gonzales ◽  
Zhou Fang ◽  
Mary L. Durbin ◽  
Kapua K. T. Meyer ◽  
Michael T. Clegg ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Sequence Diversity ◽  
Morning Glory ◽  
Neutral Model ◽  
Ipomoea Purpurea ◽  
Nucleotide Sequence Diversity ◽  
Pigment Genes ◽  
Mexican Populations
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