IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Effects of cropping systems under no-till agriculture on arbuscular mycorrhizal fungi in Argentinean Pampas
Autor/es:
NOELIA COFRÉ, M.; DOMÍNGUEZ, L.; NOELIA COFRÉ, M.; DOMÍNGUEZ, L.; BECERRA, A.; URCELAY, C.; BECERRA, A.; URCELAY, C.; FERRARI, A. E.; WALL, L. G.; FERRARI, A. E.; WALL, L. G.
Revista:
SOIL USE AND MANAGEMENT
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2017 vol. 33 p. 364 - 378
ISSN:
0266-0032
Resumen:
Here, we compare arbuscular mycorrhizal fungi (AMF) communities and fatty acids in soils underdifferent no-till (NT) agricultural managements over two seasons in two consecutive years. Two NTpractices with different agricultural managements were compared: crop rotation (CR) and soya beanmonoculture (MC). Soils of natural grasslands (NGs) were used as a reference. Treatments weretested along a regional gradient (four geographical locations) across a 400-km transect of theArgentinean Pampas. We identified 46 morphospecies. Several morphospecies occurred abundantly atall soils; others appeared to be restricted to specific situations. At the regional scale, CR maintainedthe same richness levels of AMF spores, whereas MC showed less richness, when compared with theNG. Although AMF spore density was clearly affected by cropping practices in the four locations, wecould observe some changes in AMF species richness, and similar diversity under agricultural andnatural soils. Fatty acid concentrations (whole-cell, phospholipid and neutral lipid fatty acids)revealed differences between soil managements and showed similar patterns of variation in alllocations. Spore density positively correlated with all soil lipids fractions. The results suggest thatAMF spore communities and fatty acids in soils are suitable indicators of soil management involvingdifferent levels of crop rotation. Spore richness measured at a regional scale proved to be sensitive todifferent NT agricultural managements. Moreover, certain morphospecies could be good bioindicatorsfor NT practices based on cropping systems on the Argentinean Pampas