Chloroplast microsatellite variation in Abies nordmanniana and simulation of causes for low differentiation among populations

Hansen, Jon Kehlet; Kjær, Erik Dahl; Vendramin, G. G.

doi:10.1007/s11295-005-0016-y

Cited by 28 publications

(22 citation statements)

References 44 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In contrast to our study, Hansen, Kjær et al. () observed a low genetic differentiation between the A. nordmanniana s.s . populations from the Greater and Lesser Caucasus in chloroplast microsatellites.…”

Section: Discussioncontrasting

confidence: 99%

Genetic variation in Tertiary relics: The case of eastern‐Mediterranean Abies (Pinaceae)

Hrivnák

Paule

Krajmerová

et al. 2017

Ecology and Evolution

View full text Add to dashboard Cite

The eastern‐Mediterranean Abies taxa, which include both widely distributed species and taxa with minuscule ranges, represent a good model to study the impacts of range size and fragmentation on the levels of genetic diversity and differentiation. To assess the patterns of genetic diversity and phylogenetic relationships among eastern‐Mediterranean Abies taxa, genetic variation was assessed by eight nuclear microsatellite loci in 52 populations of Abies taxa with a focus on those distributed in Turkey and the Caucasus. Both at the population and the taxon level, the subspecies or regional populations of Abies nordmanniana s.l. exhibited generally higher allelic richness, private allelic richness, and expected heterozygosity compared with Abies cilicica s.l. Results of both the structure analysis and distance‐based approaches showed a strong differentiation of the two A. cilicica subspecies from the rest as well as from each other, whereas the subspecies of A. nordmanniana were distinct but less differentiated. ABC simulations were run for a set of scenarios of phylogeny and past demographic changes. For A. ×olcayana, the simulation gave a poor support for the hypothesis of being a taxon resulting from a past hybridization, the same is true for Abies equi‐trojani: both they represent evolutionary branches of Abies bornmuelleriana.

show abstract

Section: Discussioncontrasting

confidence: 99%

Genetic variation in Tertiary relics: The case of eastern‐Mediterranean Abies (Pinaceae)

Hrivnák

Paule

Krajmerová

et al. 2017

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

“…The two highly polymorphic cpSSRs (mean H cp = 0.98) that we used identified 81 haplotypes among the 181 individuals analysed. In general, genetic variability was in line with values found in other studies on Abies species (Vendramin et al 1999;Parducci et al 2001;Hansen et al 2005), but higher than that found in Pinus sylvestris populations sampled in the same geographic area ). Using this genetic information and the geographic distribution of sampled populations, the origin of silver fir Apennine populations, and the genetic consequences of their fragmentation can be assessed.…”

Section: Discussionsupporting

confidence: 90%

Conservation genetics of small relic populations of silver fir (Abies albaMill.) in the northern Apennines

Piovani

Leonardi

Piotti

et al. 2010

Plant Biosystems - An International Journal Dealing with all As

View full text Add to dashboard Cite

Small and isolated silver fir populations from the Emilian Apennines (northern Italy) were studied to assess their level of genetic variation and their relationship with Alpine populations. We investigated the variability of two chloroplast microsatellites to analyse the within-population genetic variability of four peripheral and fragmented Apennine populations and to determine their phylogenetic relatedness to seven Alpine populations covering the entire distribution of silver fir in the Alps. Haplotypic richness and haplotype diversity as well as the fraction of private haplotypes were lower in Apennine populations, evidencing the genetic impoverishment of these stands. The among-population genetic variability analysis revealed the genetic peculiarity of Apennine populations. Analysis of molecular variance showed that the highest level of the among-population variation occurs between Alpine and Apennine regions. A neighbour-joining dendrogram revealed a distinct Apennine cluster that included the closest Alpine population. Our genetic analysis supports a common origin for Emilian Apennine populations, suggesting that these populations are relicts of past large silver fir populations in the northern Apennines. Our results point to a relevant conservation value for these stands, to be considered in their management.

show abstract

“…While one of the major criticisms of microsatellites is homoplasy owing to their size, especially when used on a large spatial and temporal scale in which mutation processes cannot be ignored (Estoup et al. 2002; Navascués & Emerson 2005), recent simulations demonstrate that chloroplast microsatellites are efficient tools for the study of genetic structure and gene flow (Hansen et al. 2005).…”

Section: Introductionmentioning

confidence: 99%

Molecular data reveal isolation by distance and past population expansion for the shea tree (Vitellaria paradoxa C.F. Gaertn) in West Africa

et al. 2011

View full text Add to dashboard Cite

While the genetic structure of many tree species in temperate, American and Asian regions is largely explained by climatic oscillations and subsequent habitat contractions and expansions, little is known about Africa. We investigated the genetic diversity and structure of shea tree (Vitellaria paradoxa,) in Western Africa, an economically important tree species in the Sudano-Sahelian zone. Eleven nuclear microsatellites (nuc) were used to genotype 673 trees selected in 38 populations. They revealed moderate to high within-population diversity: allelic richness ranged from R(nuc) = 3.99 to 5.63. This diversity was evenly distributed across West Africa. Populations were weakly differentiated (F(STnuc) = 0.085; P < 0.0001) and a pattern of isolation by distance was noted. No phylogeographic signal could be detected across the studied sample. Additionally, two chloroplast microsatellite loci, leading to 11 chlorotypes, were used to analyse a sub-set of 370 individuals. Some variation in chloroplast allelic richness among populations could be detected (R(cp) = 0.00 to 4.36), but these differences were not significant. No trend with latitude and longitude were observed. Differentiation was marked (G(STcp) = 0.553; P < 0.0001), but without a significant phylogeographical signal. Population expansion was detected considering the total population using approximate Bayesian computation (nuclear microsatellites) and mismatch distribution (chloroplast microsatellites) methods. This expansion signal and the isolation by distance pattern could be linked to the past climatic conditions in West Africa during the Pleistocene and Holocene which should have been favourable to shea tree development. In addition, human activities through agroforestry and domestication (started 10,000 bp) have probably enhanced gene flow and population expansion.

show abstract

Chloroplast microsatellite variation in Abies nordmanniana and simulation of causes for low differentiation among populations

Cited by 28 publications

References 44 publications

Genetic variation in Tertiary relics: The case of eastern‐Mediterranean Abies (Pinaceae)

Genetic variation in Tertiary relics: The case of eastern‐Mediterranean Abies (Pinaceae)

Conservation genetics of small relic populations of silver fir (Abies albaMill.) in the northern Apennines

Molecular data reveal isolation by distance and past population expansion for the shea tree (Vitellaria paradoxa C.F. Gaertn) in West Africa

Contact Info

Product

Resources

About