Journal Title
Title of Journal: Plant Ecol
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Abbravation: Plant Ecology
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Publisher
Springer Netherlands
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Authors: G Grilli C Urcelay M S Longo L Galetto
Publish Date: 2014/09/10
Volume: 215, Issue: 12, Pages: 1513-1525
Abstract
Forest fragmentation and biological invasions modify plant–mycorrhizal fungal interactions but how these variations affect native and invasive plant vegetative and reproductive growth in a fragmented forest remain unknown To test the effects of soil fungi from different forest fragment sizes on native and invasive plants we conducted a greenhouse factorial experiment combining soil source ie small and large forest fragments and fungicide application with and without fungicide on two ruderal congeneric Euphorbia E acerensis and E dentata native and invasive respectively Soil fungi from small forest fragments promoted lower rates of mycorrhizal colonization than soil from large forest fragments in both plant species In general the source of soil fungi had no effect on vegetative and reproductive growth of both plant species Fungicide application positively affected plant height and dry mass of the native host while the fungicide application negatively affected height and neutrally affected growth of the invasive plant species Reproductive traits were in general positively affected by fungicide application although in some cases they were dependent on soil source Forest fragmentation might promote changes in soil conditions that negatively affect mycorrhizal colonization at levels without functional consequences for plant growth However landscape modifications that contribute to a more severe reduction in Arbuscular Mycorrhizal AM fungal colonization might certainly have important consequences on native and invasive plant growthWe thank Julia Galetto for text editing and English advice Secretaría de Ciencia y Técnica Universidad Nacional de Córdoba and Concejo Nacional de Investigaciones Científicas y Técnicas CONICET for financial support CU and LG are researchers in CONICET and MSL and GG are fellows of the same institution
Keywords:
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