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@article{1300793,
author = {Mikulášková, Eva and Hájek, Michal and Veleba, Adam and Johnson, Matthew G. and Hájek, Tomáš and Shaw, Jonathan A.},
article_location = {HOBOKEN},
article_number = {1},
doi = {http://dx.doi.org/10.1002/ece3.1351},
keywords = {Calcium tolerance; ecotypic adaptation; hybridization; microsatellites; population structure; Sphagnum warnstorfii},
language = {eng},
issn = {2045-7758},
journal = {ECOLOGY AND EVOLUTION},
title = {Local adaptations in bryophytes revisited: the genetic structure of the calcium-tolerant peatmoss Sphagnum warnstorfii along geographic and pH gradients},
url = {http://onlinelibrary.wiley.com/doi/10.1002/ece3.1351/full},
volume = {5},
year = {2015}
}
TY - JOUR
ID - 1300793
AU - Mikulášková, Eva - Hájek, Michal - Veleba, Adam - Johnson, Matthew G. - Hájek, Tomáš - Shaw, Jonathan A.
PY - 2015
TI - Local adaptations in bryophytes revisited: the genetic structure of the calcium-tolerant peatmoss Sphagnum warnstorfii along geographic and pH gradients
JF - ECOLOGY AND EVOLUTION
VL - 5
IS - 1
SP - 229-242
EP - 229-242
PB - WILEY-BLACKWELL
SN - 20457758
KW - Calcium tolerance
KW - ecotypic adaptation
KW - hybridization
KW - microsatellites
KW - population structure
KW - Sphagnum warnstorfii
UR - http://onlinelibrary.wiley.com/doi/10.1002/ece3.1351/full
L2 - http://onlinelibrary.wiley.com/doi/10.1002/ece3.1351/full
N2 - Bryophytes dominate some ecosystems despite their extraordinary sensitivity to habitat quality. Nevertheless, some species behave differently across various regions. The existence of local adaptations is questioned by a high dispersal ability, which is thought to redistribute genetic variability among populations. Although Sphagnum warnstorfii is an important ecosystem engineer in fen peatlands, the causes of its rather wide niche along the pH/calcium gradient are poorly understood. Here, we studied the genetic variability of its global populations, with a detailed focus on the wide pH/calcium gradient in Central Europe. Principal coordinates analysis of 12 polymorphic microsatellite loci revealed a significant gradient coinciding with water pH, but independent of geography; even samples from the same fens were clearly separated along this gradient. However, most of the genetic variations remained unexplained, possibly because of the introgression from phylogenetically allied species. This explanation is supported by the small heterogeneous cluster of samples that appeared when populations morphologically transitional to S.subnites, S.rubellum, or S.russowii were included into the analysis. Alternatively, this unexplained variation might be attributed to a legacy of glacial refugia with recently dissolved ecological and biogeographic consequences. Isolation by distance appeared at the smallest scale only (up to 43km). Negative spatial correlations occurred more frequently, mainly at long distances (up to 950km), implying a genetic similarity among samples which are very distant geographically. Our results confirm the high dispersal ability of peatmosses, but simultaneously suggested that their ability to cope with a high pH/calcium level is at least partially determined genetically, perhaps via specific physiological mechanisms or a hummock-forming ability.
ER -
MIKULÁŠKOVÁ, Eva, Michal HÁJEK, Adam VELEBA, Matthew G. JOHNSON, Tomáš HÁJEK and Jonathan A. SHAW. Local adaptations in bryophytes revisited: the genetic structure of the calcium-tolerant peatmoss Sphagnum warnstorfii along geographic and pH gradients. \textit{ECOLOGY AND EVOLUTION}. HOBOKEN: WILEY-BLACKWELL, 2015, vol.~5, No~1, p.~229-242. ISSN~2045-7758. Available from: https://dx.doi.org/10.1002/ece3.1351.
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