Niche partitioning in arbuscular mycorrhizal communities in temperate grasslands: a lesson from adjacent serpentine and nonserpentine habitats

0447696 - BÚ 2016 RIV GB eng J - Článek v odborném periodiku
Kohout, Petr - Doubková, Pavla - Bahram, M. - Suda, Jan - Tedersoo, L. - Voříšková, Jana - Sudová, Radka
Niche partitioning in arbuscular mycorrhizal communities in temperate grasslands: a lesson from adjacent serpentine and nonserpentine habitats.
Molecular Ecology. Roč. 24, č. 8 (2015), s. 1831-1843. ISSN 0962-1083. E-ISSN 1365-294X
Institucionální podpora: RVO:67985939 ; RVO:61388971
Klíčová slova: arbuscular mycorrhizal fungi * community ecology * NDA barcoding
Kód oboru RIV: EF - Botanika; EE - Mikrobiologie, virologie (MBU-M)
Impakt faktor: 5.947, rok: 2015

We explored the effects of deterministic (soil characteristics, host plant life stage - vegetative/generative, neighbouring plant communities) and stochastic processes on colonization, richness and community composition of arbuscular mycorrhizal fungi (AMF, phylum Glomeromycota) in roots of Knautia arvensis (Dipsacaceae) plants from three serpentine grasslands and adjacent non-serpentine sites. The study was based on 454-sequencing of the ITS region of rDNA. In total, we detected 81 molecular taxonomical operational units (MOTUs) belonging to the Glomeromycota. Our study supports the dominance of deterministic factors in structuring AMF communities in heterogeneous environment with a mosaic of serpentine and non-serpentine soils. Serpentine character of the site and also higher Fe concentration negatively influenced AMF root colonization. AMF MOTUs richness linearly increased along a pH gradient from 3.5 to 5.8. Contrary, K and Cr soil concentrations had a negative effect on AMF MOTUs richness. Further, we detected a strong relation between neighbouring plant community composition and AMF MOTUs richness. Environmental parameters, in particular the complex of serpentine conditions, pH and available soil Ni concentration, played a key role in structuring composition of AMF communities.; although the composition was also dependent on host plant life stage.
Trvalý link: http://hdl.handle.net/11104/0249478