Different patterns of genetic structure of relict and isolated populations of endangered peat-bog pine [Pinus uliginosa Neumann]

• Autorzy: Wachowiak W , Prus-Glowacki W
• Języki publikacji: EN

Abstrakty

EN

Recent changes in environmental conditions in populations of peat-bog pine (Pinus uliginosa Neumann) caused rapid decline or even extinction of the species in several stands in Central Europe. Conservation strategies for P. uliginosa require information about the evolutionary history and genetic structure of its populations. Using isozymes we assessed the genetic structure of P. uliginosa from four isolated stands in Poland and compared the results to genetic structures of other closely related pine species including eight populations of Pinus mugo, ten of Pinus sylvestris and one of Pinus uncinata. The level of genetic variability of P. uliginosa measured by the mean number of alleles per locus and average heterozygosity was similar to others related to P. uliginosa taxa from the reference group but it differs among populations. High genetic similarity was found between two populations of P. uliginosa from Low Silesian Pinewood. The populations were genetically distinct as compared to other populations including locus classicus of the species from the peat bog at Batorów Reserve. Very low genetic distance (DN = 0.002) and small genetic differentiation (GST = 0.003) were found between P. uliginosa and P. mugo in the sympatrie populations of the species from Zieleniec peat bog suggesting the ongoing natural hybridisation and genetic contamination of peat-bog pine from this area. Some evidence for skew in allele frequency distribution potentially due to recent bottleneck was found in population from Low Silesian Pinewood. The analysed open pollinated progeny derived from two P. uliginosa stands from Low Silesian Pine- wood showed the excess of homozygotes as compared to the maternal trees indicating high level of inbreeding (F =0.105,F = 0.081). The results are discussed in the context of evolution of P. uliginosa populations, taxonomie relationships between the analysed species and conservation strategies for active protection of peat-bog pine.

Słowa kluczowe

EN

genetic structure; relict; isolation; population; endangered plant; gene flow; peat bog pine; Pinus uliginosa

• Wydawca: -
• Czasopismo: Journal of Applied Genetics
• Rocznik: 2009
• Tom: 50
• Numer: 4
• Opis fizyczny: p.329-339,fig.,ref.

Twórcy

autor

Wachowiak W

• Institute of Dendrology, Polish Academy of Sciences, Kornik, Poland

autor

Prus-Glowacki W

• Faculty of Biology, Institute of Experimental Biology, Department of Genetics, Adam Mickiewicz University, Poznań, Poland

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