Invasive alien plants affect native species fitness


Friday, 7 July 2017

Terrestrial plants establish symbiotic relationships with arbuscular mycorrhizal fungi (AMF) which colonize their roots, aiding nutrients acquisition and growth, and protecting plants from abiotic stresses.

Three invasive plants with different levels of AMF were evaluated for their negative impact on native plants in Poland: Fallopia japonica, Rudbeckia laciniata and Solidago gigantea.

The work entailed soil and root sampling from beneath stands of each invasive species, from which the AMF colonization and species richness was determined.

Fallopia japonica showed the strongest negative effect on AMF abundance and species richness.

Biological performance of two native species, Trifolium repens and Plantago lanceolata, revealed a reduced shoot and photosynthetic activity on soil taken from beneath invasive species.

Source: Zubek S, Majewska M, Blaszkowski J, Stefanowicz AM, Nobis M, Kapusta P (2016) Invasive plants affect arbuscular mycorrhizal fungi abundance and species richness as well as the performance of native plants grown in invaded soils. Biology and Fertility of Soils 52, 841-852.

From: EPPO Reporting Service 2017 no. 6

Picture: Wikimedia commons