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Nutrient limitation drives response of Calamagrostis epigejos to arbuscular mycorrhiza in primary succession
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SYSNO ASEP 0464281 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nutrient limitation drives response of Calamagrostis epigejos to arbuscular mycorrhiza in primary succession Author(s) Rydlová, Jana (BU-J) RID, ORCID
Püschel, David (BU-J) RID, ORCID
Dostálková, M. (CZ)
Janoušková, Martina (BU-J) RID, ORCID
Frouz, J. (CZ)Number of authors 5 Source Title Mycorrhiza. - : Springer - ISSN 0940-6360
Roč. 26, č. 7 (2016), s. 757-767Number of pages 11 s. Language eng - English Country DE - Germany Keywords chronosequence ; mycorrhizal growth response ; spoil banks Subject RIV EF - Botanics R&D Projects GA13-10377S GA ČR - Czech Science Foundation (CSF) Institutional support BU-J - RVO:67985939 UT WOS 000385066300012 EID SCOPUS 84988530090 DOI https://doi.org/10.1007/s00572-016-0712-5 Annotation Little is known about the functioning of arbuscular mycorrhizal (AM) symbiosis over the course of primary succession, where soil, host plants, and AM fungal communities all undergo significant changes. Over the course of succession at the studied post-mining site, plant cover changes from an herbaceous community to the closed canopy of a deciduous forest. Calamagrostis epigejos (Poaceae) is a common denominator at all stages, and it dominates among AM host species. Its growth response to AM fungi was studied at four distinctive stages of natural succession: 12, 20, 30, and 50 years of age, each represented by three spatially separated sites. Soils obtained from all 12 studied sites were gamma-sterilized and used in a greenhouse experiment in which C. epigejos plants were (1) inoculated with a respective community of native AM fungi, (2) inoculated with reference AM fungal isolates from laboratory collection, or (3) cultivated without AM fungi. AM fungi strongly boosted plant growth during the first two stages but not during the latter two, where the effect was neutral or even negative. While plant phosphorus (P) uptake was generally increased by AM fungi, no contribution of mycorrhizae to nitrogen (N) uptake was recorded. Based on N:P in plant biomass, we related the turn from a positive to a neutral/negative effect of AM fungi on plant growth, observed along the chronosequence, to a shift in relative P and N availability. No functional differences were found between native and reference inocula, yet root colonization by the native AM fungi decreased relative to the reference inoculum in the later succession stages, thereby indicating shifts in the composition of AM fungal communities reflected in different functional characteristics of their members. Workplace Institute of Botany Contact Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Year of Publishing 2017
Number of the records: 1