scholarly journals Lineage admixture during postglacial range expansion is responsible for the increased gene diversity of Kalopanax septemlobus in a recently colonised territory

Heredity ◽  
2011 ◽  
Vol 107 (4) ◽  
pp. 338-348 ◽  
Author(s):  
S Sakaguchi ◽  
Y Takeuchi ◽  
M Yamasaki ◽  
S Sakurai ◽  
Y Isagi
Keyword(s):  
Range Expansion ◽  
Gene Diversity ◽  
Kalopanax Septemlobus ◽  
Lineage Admixture

Phylogeography of the tailed frog (Ascaphus truei) in British Columbia

2000 ◽  
Vol 78 (10) ◽  
pp. 1749-1758 ◽  
Author(s):  
Kermit Ritland ◽  
Linda A Dupuis ◽  
Fred L Bunnell ◽  
Wesley LY Hung ◽  
John E Carlson
Keyword(s):  
British Columbia ◽  
Genetic Distance ◽  
Range Expansion ◽  
Gene Diversity ◽  
Distinct Group ◽  
Strong Relationship ◽  
Physical Distance ◽  
Genetic Distances ◽  
Coastal Regions ◽  
Ascaphus Truei

The tailed frog (Ascaphus truei) is highly philopatric, with naturally disjunct populations. To infer the historical pattern of range expansion and contraction in A. truei of British Columbia (B.C.), we conducted a randomly ampli fied polymorphic DNA (RAPD) survey, using 16 primers, of 469 individuals sampled from 22 populations in four regions. Genetic distances, based on 169 putative RAPD loci, clustered populations into three clear groups: mid/north-coastal B.C., south-coastal B.C., and interior B.C. The interior populations were the most distinct group, but their genetic distance from other groups equals that expected from isolation by physical distance alone, as opposed to taxonomic differentiation. FST values within coastal regions were moderately low (0.02-0.05) but were high in the interior (0.12) and across all populations (0.18). Within the mid/north-coastal and south-coastal regions, genetic distance showed no relationship with physical distance, while among regions and within the interior region there was a strong relationship. Gene diversity varied significantly among regions, with both the interior and south-coastal populations showing about 25% less diversity than the mid/north-coastal populations. These data indicate a complex history of geographic restrictions to multiple refugia, followed by various types of range expansion. The implications of these results for conservation efforts in this species are discussed.

Range expansion and lineage admixture of the Japanese evergreen tree Machilus thunbergii in central Japan

2014 ◽  
Vol 127 (6) ◽  
pp. 709-720 ◽  
Author(s):  
Shuntaro Watanabe ◽  
Yuko Kaneko ◽  
Yuri Maesako ◽  
Naohiko Noma
Keyword(s):  
Range Expansion ◽  
Central Japan ◽  
Evergreen Tree ◽  
Machilus Thunbergii ◽  
Lineage Admixture

Bioactivity of Kalopanax septemlobus extracts for functional materials

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
SH Kim ◽  
MJ Lee ◽  
J Han ◽  
CE Lee
Keyword(s):  
Functional Materials ◽  
Kalopanax Septemlobus

Molecular Characterization and Genetic Diversity Study in F3 Population of Rice

2013 ◽  
Vol 20 (1-2) ◽  
pp. 1-8
Author(s):  
MM Rahman ◽  
L Rahman ◽  
SN Begum ◽  
F Nur
Keyword(s):  
Genetic Distance ◽  
Gene Diversity ◽  
Random Amplified Polymorphic Dna ◽  
Molecular Genetic ◽  
Molecular Genetic Analysis ◽  
Polymorphic Loci ◽  
Rice Genotypes ◽  
High Level ◽  
Genetic Diversity Study ◽  
Diversity Study

Random Amplified Polymorphic DNA (RAPD) assay was initiated for molecular genetic analysis among 13 F3 rice lines and their parents. Four out of 15 decamer random primers were used to amplify genomic DNA and the primers yielded a total of 41 RAPD markers of which 37 were considered as polymorphic with a mean of 9.25 bands per primer. The percentage of polymorphic loci was 90.24. The highest percentage of polymorphic loci (14.63) and gene diversity (0.0714) was observed in 05-6 F3 line and the lowest polymorphic loci (0.00) and gene diversity (0.00) was found in 05-12 and 05-15 F3 lines. So, relatively high level of genetic variation was found in 05-6 F3 line and it was genetically more diverse compared to others. The average co-efficient of gene differentiation (GST) and gene flow (Nm) values across all the loci were 0.8689 and 0.0755, respectively. The UPGMA dendrogram based on the Nei’s genetic distance differentiated the rice genotypes into two main clusters: PNR-519, 05-19, 05-14, 05-12 and 05-17 grouped in cluster 1. On the other hand, Baradhan, 05-9, 05-13, 05-11, 05-5, 05-6, 05-1, 05-4, 05-15 and 05-25 were grouped in cluster 2. The highest genetic distance (0.586) was found between 05-4 and 05-17 F3 lines and they remain in different cluster.DOI: http://dx.doi.org/10.3329/pa.v20i1-2.16839 Progress. Agric. 20(1 & 2): 1 – 8, 2009

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