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The Holocene
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Analysis of short DNA fragments from Holocene peatmoss samples

Y. Suyama

Field Science Center, Graduate School of Agricultural Science, Tohoku University, 232 3, Yomogida, Naruko-onsen, Osaki, Miyagi 989-6711, Japan, suyo{at}bios.tohoku.ac.jp

U. Gunnarsson

Department of Plant Ecology, Evolutionary Biology Centre, Uppsala University, Villavägen 14, SE-752 36 Uppsala, Sweden

L. Parducci

Department of Evolutionary Functional Genomics, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden

This paper describes our recent attempt to isolate and analyse DNA from old plant remains of the common peatmoss Sphagnum fuscum retrieved from a peat core collected in the mire Fuglmyra, in central Norway. DNA was recoverable and usable from subfossilized (10—450 years old) plant remains of the peatmoss. A chloroplast (trnL) and two nuclear (ITS2 and RAPDf) regions were co-amplified from 80 samples of different ages. The RAPDf region was the only variable one with three different haplotypes found among five samples. Comparison of the ancient sequences with modern sequences found in the extant population occurring at the same site ascertained a genetic link between modern and fossil samples of this species. This retrieval of ancient DNA from subfossilized moss remains isolated from peat cores has important implications for the palaeoecology of peatmosses by allowing direct estimates of plant population dynamics in space and time.

Key Words: Ancient DNA • trnL • ITS2 • RAPDf • Sphagnum • peatlands • population dynamics • palaeoecology • Norway • Holocene.

The Holocene, Vol. 18, No. 6, 1003-1006 (2008)
DOI: 10.1177/0959683608093540
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