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Arbuscular mycorrhizal fungal species in saline environments of Central Argentina: seasonal variation and distribution of spores at different soil depths

Soteras F., Becerra A., Cofré N., Bartoloni J. & Cabello M. (2012) Arbuscular mycorrhizal fungal species in saline environments of Central Argentina: seasonal variation and distribution of spores at different soil depths.

Sydowia 64 (2): 301–311

Natural saline soils of Central Argentina have rarely been the focus of arbuscular mycorrhizal fungi (AMF) which are Glomeromycota. We explored the vertical distribution of spores of different AMF species in the rhizosphere of Atriplex lampa in two saline environments (Salinas Grandes and Salinas de Ambargasta) during wet and dry seasons. 18 AMF species were identified. Spore numbers were highest at Salinas Grandes during the wet season. Soil depth showed an influence on spore abundance of some specific species. Our results highlight the effect of soil depth, seasons and soil characteristics on sporulation of AMF species under saline conditions.

Keywords: saline soils; soil profile, Atriplex lampa, mycorrhizal species, Glomeromycota.

 

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