The effect of different pine hosts on the sampling of Rhizopogon spore banks in five Eastern Sierra Nevada forests

The New Phytologist
T A RuscaT D Bruns

Abstract

Our primary goal was to determine whether detection of Rhizopogon internal transcribed spacer (ITS) groups is affected by the pine species used in seedling bioassays. Our secondary goal was to investigate composition of Rhizopogon spore banks in the Eastern Sierra Nevada of California, a previously unsampled region. We used seedlings of Pinus contorta, Pinus jeffreyi, Pinus lambertiana, and Pinus muricata as bioassay plants and identified the Rhizopogon retrieved by internal transcribed spacer (ITS) sequence analysis. We found that each of the pine species retrieved all of the abundant Rhizopogon ITS groups, but there were significant differences among pines in the richness of Rhizopogon ITS groups recovered. Pinus muricata recovered all ITS groups found in this study and was significantly better than P. lambertiana. Rhizopogon communities from the five sampled sites contained six to eight ITS groups per site, with two unique sequence groups and a higher abundance of the Rhizopogon ellenae and Rhizopogon arctostaphyli groups than at previously sampled sites. These results show high cross-receptivity between Rhizopogon and pine species, and regional patterns in spore bank composition.

Citations

Apr 16, 2014·Proceedings of the National Academy of Sciences of the United States of America·Jennifer M TalbotKabir G Peay
Oct 17, 2015·The ISME Journal·Sydney I GlassmanThomas D Bruns
Dec 21, 2017·PloS One·Masao MurataKazuhide Nara

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