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Publication Type J
Authors Becerra, A., N. Bartoloni, N. Cofre, F. Soteras and M. Cabello
Title Arbuscular mycorrhizal fungi in saline soils: Vertical distribution at different soil depth
Source Brazilian Journal of Microbiology
Abstract Arbuscular mycorrhizal fungi (AMF) colonize land plants in every ecosystem, even extreme conditions such as saline soils. In the present work we report for the first time the mycorrhizal status and the vertical fungal distribution of AMF spores present in the rhizospheric soil samples of four species of Chenopodiaceae (Allenrolfea patagonica, Atriplex argentina, Heterostachys ritteriana and Suaeda divaricata) at five different depths in two saline of central Argentina. Roots showed medium, low or no colonization (0-50%). Nineteen morphologically distinctive AMF species were recovered. The number of AMF spores ranged between 3 and 1162 per 100 g dry soil, and AMF spore number decreased as depth increased at both sites. The highest spore number was recorded in the upper soil depth (0-10 cm) and in S. divaricata. Depending of the host plant, some AMF species sporulated mainly in the deep soil layers (Glomus magnicaule in Allenrolfea patagonica, Septoglomus aff. constrictum in Atriplex argentina), others mainly in the top layers (G. brohultti in Atriplex argentina and Septoglomus aff. constrictum in Allenrolfea patagonica). Although the low percentages of colonization or lack of it, our results show a moderate diversity of AMF associated to the species of Chenopodiaceae investigated in this study. The taxonomical diversity reveals that AMF are adapted to extreme environmental conditions from saline soils of central Argentina.
Author Address [Becerra, Alejandra; Cofre, Noelia; Soteras, Florencia] Univ Nacl Cordoba, Fac Ciencias Exactas Fis & Nat, Inst Multidisciplinario Biol Vegetal, Consejo Nacl Invest Cient & Tecn, RA-5000 Cordoba, Argentina. [Bartoloni, Norberto] Univ Buenos Aires, Fac Agron, Buenos Aires, DF, Argentina. [Cabello, Marta] Univ Nacl La Plata, Fac Ciencias Nat & Museo, Inst Spcgazzini, La Plata, Argentina. Becerra, A (reprint author), Univ Nacl Cordoba, Fac Ciencias Exactas Fis & Nat, Inst Multidisciplinario Biol Vegetal, Consejo Nacl Invest Cient & Tecn, CC 495, RA-5000 Cordoba, Argentina. abecerra@com.uncor.edu
ISSN 1517-8382
ISBN 1517-8382
Publication Date Apr-Jun
Year Published 2014
Volume 45
Issue 2
Beginning Page 585-594
Unique Article Identifier WOS:000342659600029
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