Imbalanced carbon-for-phosphorus exchange between European arbuscular mycorrhizal fungi and non-native Panicum grasses-A case of dysfunctional symbiosis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F17%3A00482851" target="_blank" >RIV/61388971:_____/17:00482851 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.pedobi.2017.05.004" target="_blank" >http://dx.doi.org/10.1016/j.pedobi.2017.05.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pedobi.2017.05.004" target="_blank" >10.1016/j.pedobi.2017.05.004</a>

Result language

angličtina

Original language name

Imbalanced carbon-for-phosphorus exchange between European arbuscular mycorrhizal fungi and non-native Panicum grasses-A case of dysfunctional symbiosis

Original language description

Arbuscular mycorrhizal fungi (AMF) are globally widespread root symbionts of the majority of terrestrial plant species, they are present in almost all soils, and show particularly low levels of partner specificity. Usually, they benefit their plant hosts through increased nutrients (especially phosphorus, P) supply, improved growth, stress tolerance and fitness as compared to the non-mycorrhizal plants. In exchange for the symbiotic benefits, plant supplies the fungal partner with carbon (C), constituting symbiotic costs for the plant. Here we tested the effect of four soil treatments, combining removal of indigenous AMF communities and/or supplementation with mineral P to restore plant P nutrition, on plant growth and C fluxes from plant to soil as well as on mineral nutrition of a C-3 and a congeneric C-4 grass species. Contrary to all expectations, both plant species showed lower P and nitrogen contents, and grew smaller, though allocated more C belowground, when supplied with AMF-containing full soil inoculum as compared to AMF-free inoculum. Our results indicate possible incompatibility of symbiotic partners of different geographic origin (European AMF and tropical/subtropical grasses from Africa/Asia), leading to apparent parasitism of the plants by the AMF communities in terms of both growth and nutritional responses. Most likely, downregulation of the direct (root) P uptake pathway by the plants in response to mycorrhiza formation over-compensated the symbiotic (indirect) P acquisition via mycorrhizal hyphae. The observed effects could also have been caused (or contributed to) by the relatively young age of the experimental plants, and different composition of microbial communities in the two inoculant (containing or not the AMF).

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10606 - Microbiology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Pedobiologia

ISSN

0031-4056

e-ISSN

—

Volume of the periodical

62

Issue of the periodical within the volume

May 2017

Country of publishing house

DE - GERMANY

Number of pages

8

Pages from-to

48-55

UT code for WoS article

000403634700007

EID of the result in the Scopus database

2-s2.0-85019668766