History, genetic differentiation and conservation strategies for disjunct populations of Sibiraea species from Southeastern Europe and Asia

Ballian, Dalibor; Grebenc, Tine; Božič, Gregor; Melnik, V.; Wraber, Tone; Kraigher, Hojka

doi:10.1007/s10592-006-9131-z

Cited by 10 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to distribution in the QTP, S. laevigata also presently distributes in the Mediterranean (Gu and Alexander, 2003; Ballian et al, 2006), and may have distributed around the Tethys Ocean before the QTP uplift. On the other hand, S. angustata was endemic to the QTP.…”

Section: Discussionmentioning

confidence: 99%

Gene Flow Results in High Genetic Similarity between Sibiraea (Rosaceae) Species in the Qinghai-Tibetan Plateau

Gao

Zhang

et al. 2016

Front. Plant Sci.

View full text Add to dashboard Cite

Studying closely related species and divergent populations provides insight into the process of speciation. Previous studies showed that the Sibiraea complex's evolutionary history on the Qinghai-Tibetan Plateau (QTP) was confusing and could not be distinguishable on the molecular level. In this study, the genetic structure and gene flow of Sibiraea laevigata and Sibiraea angustata on the QTP was examined across 45 populations using 8 microsatellite loci. Microsatellites revealed high genetic diversity in Sibiraea populations. Most of the variance was detected within populations (87.45%) rather than between species (4.39%). We found no significant correlations between genetic and geographical distances among populations. Bayesian cluster analysis grouped all individuals in the sympatric area of Sibiraea into one cluster and other individuals of S. angustata into another. Divergence history analysis based on the approximate Bayesian computation method indicated that the populations of S. angustata at the sympatric area derived from the admixture of the 2 species. The assignment test assigned all individuals to populations of their own species rather than its congeneric species. Consistently, intraspecies were detected rather than interspecies first-generation migrants. The bidirectional gene flow in long-term patterns between the 2 species was asymmetric, with more from S. angustata to S. laevigata. In conclusion, the Sibiraea complex was distinguishable on the molecular level using microsatellite loci. We found that the high genetic similarity of the complex resulted from huge bidirectional gene flow, especially on the sympatric area where population admixtures occurred. This study sheds light on speciation with gene flow in the QTP.

show abstract

Section: Discussionmentioning

confidence: 99%

Gene Flow Results in High Genetic Similarity between Sibiraea (Rosaceae) Species in the Qinghai-Tibetan Plateau

Gao

Zhang

et al. 2016

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Unfortunately, this argument can only be the subject of hypothetical speculations without the support of data that allow us to fully understand the ecological corridors between Europe and Asia and between Southeast Asia and North America as these are currently highly disjointed areas. However, a phenomenon similar to that observed in some tertiary plant relics in disjointed areas of Eurasia may also have occurred, in which non-coding genes, including ITS, show a slow pace of evolution, remaining rather conserved over time (Ballian et al 2006 ; Fineschi et al 2004 ).…”

Section: Discussionmentioning

confidence: 76%

Tuber wenchuanense, a holarctic truffle with a wide range of host plants and description of its ectomycorrhiza with spruce

et al. 2023

View full text Add to dashboard Cite

Tuber wenchuanense ascomata (Ascomycota, Pezizales), a species originally described from Sichuan (China), were found in the Tatra Mountains in southern Poland. The purpose of this work was to (i) report and assess the first case of the holarctic natural distribution of a Tuber species, (ii) amend the original description of the species, (iii) summarize data on its host plants and (iv) describe its ectomycorrhiza. Specimens of Tuber wenchuanense from the Tatra Mountains were studied morphologically and molecularly. The ectomycorrhiza of this truffle with Picea abies was described for the first time. The distribution of T. wenchuanense, which is reconstructed based on sequences deposited in the publicly available nucleotide sequence databases, makes it the first holarctic Tuber species and the one with the northernmost habitat. In fact, its habitat is confined mainly to mountain coniferous forests and alpine and arctic tundra; although, according to known observations, the fruiting bodies of T. wenchuanense can be produced only under conifers. Based on the sequences of the internal transcribed spacer, this species appears to have low genetic variability over the entire distribution range. The phylogenetic tree showed that some of the unidentified phylotypes from the Rufum clade found by other researchers belong to T. wenchuanense. The ecological implications of these findings are discussed.

show abstract

“…Hand.‐Mazz. (Rosaceae) is one of five species of the genus Sibiraea growing in parts of southern Siberia, western China and southeastern Europe (Ballian et al 2006). It is a deciduous and polygamo‐dioecious shrub with alternate and narrowly lanceolate or oblanceolate leaves.…”

Section: Methodsmentioning

confidence: 99%

Phylogeographic analysis of the endemic species Sibiraea angustata reveals a marginal refugium in the Qinghai–Tibet Plateau

Duan¹,

Gao²,

Zhang³

et al. 2011

Nordic Journal of Botany

View full text Add to dashboard Cite

The phylogeography of Sibiraea angustata, an endemic shrub species, was studied in the QinghaiÁTibet plateau (QTP). We investigated 466 individuals of S. angustata from 39 populations basically covering its total distribution area. Eight haplotypes (AÁH) were detected by sequencing the intergenic chloroplast spacer trnSÁtrnG (600 bp), and one ancestral haplotype (A) was found to be widely distributed. The level of differentiation among populations was very high (G ST 0 0.768; N ST 00.850) and a significant phylogeographical structure was revealed (N ST G ST ). Analysis of molecular variance (AMOVA) similarily revealed a high level of differentiation among populations (84%, F ST 00.842), indicating that little gene flow has occurred among populations mutually isolated by high mountains and rivers in the QTP. On the QTP platform there was only one widespread haplotype (A) in most populations, while populations along the eastern and southeastern edges had high diversity and unique haplotypes. Our results suggest that a glacial refugium may have been located on the eastern or southeastern edges of QTP during the last glaciation, and that interglacial and postglacial range expansion occurred from that refugium. Nested clade analysis (NCA) also suggests this scenario, which indicates that the current spatial distribution of cpDNA haplotypes and populations mainly resulted from long distance colonization, possibly coupled with subsequent or past fragmentation followed by range expansion and allopatric fragmentation.

show abstract

History, genetic differentiation and conservation strategies for disjunct populations of Sibiraea species from Southeastern Europe and Asia

Cited by 10 publications

References 39 publications

Gene Flow Results in High Genetic Similarity between Sibiraea (Rosaceae) Species in the Qinghai-Tibetan Plateau

Gene Flow Results in High Genetic Similarity between Sibiraea (Rosaceae) Species in the Qinghai-Tibetan Plateau

Tuber wenchuanense, a holarctic truffle with a wide range of host plants and description of its ectomycorrhiza with spruce

Phylogeographic analysis of the endemic species Sibiraea angustata reveals a marginal refugium in the Qinghai–Tibet Plateau

Contact Info

Product

Resources

About