IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Mycorrhizal fungi affect plant growth: experimental evidence comparing native and invasive hosts in the context of forest fragmentation.
Autor/es:
GRILLI, G.; URCELAY C; LONGO, MS; GALETTO, L
Revista:
PLANT ECOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014 vol. 215 p. 1513 - 1525
ISSN:
1385-0237
Resumen:
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 (i.e., 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 growth.