Haug, I.; Wubet, T.; Weiß, M.; Aguirre, N.; Weber, M.; Günter, S. & Kottke, I. (2010): <b>Species-rich but distinct arbuscular mycorrhizal communities in reforestation plots on degraded pastures and in neighboring pristine tropical mountain rain forest</b>. <i>Tropical Ecology</i> <b>51</b>, 125-148.
Species-rich but distinct arbuscular mycorrhizal communities in reforestation plots on degraded pastures and in neighboring pristine tropical mountain rain forest
Abstract: For the first time in tropical mountain rain forest, arbuscular mycorrhizal fungal<br/>
richness and community composition was investigated from planted seedlings of Cedrela<br/>
montana, Heliocarpus americanus, Juglans neotropica and Tabebuia chrysantha in reforestation<br/>
plots on degraded pastures. A segment of fungal 18S rDNA was sequenced from the mycorrhizas.<br/>
Sequences were compared with those obtained from mycorrhizas of adult trees of 30<br/>
species in the neighboring, pristine tropical mountain rain forest. In total, 193 glomeromycotan<br/>
sequences were analyzed, 130 of them previously unpublished. Members of Glomeraceae,<br/>
Acaulosporaceae, Gigasporaceae and Archaeosporales were found in both habitats, with Glomus<br/>
Group A sequences being by far the most diverse and abundant. Glomus Group A sequence type<br/>
richness did not appear to differ between the habitats; a large number was observed in both.<br/>
Glomus Group A sequence type composition, however, was found distinctly different. Seedlings<br/>
were rarely colonized by fungi of the pristine forest but trapped a number of fungi known from<br/>
other areas, which were rarely found in the pristine forest.