Soil–strain compatibility: the key to effective use of arbuscular mycorrhizal inoculants?

Abstract

Consistency of response to arbuscular mycorrhizal (AM) inoculation is required for efficient use of AM fungi in plant production. Here, we found that the response triggered in plants by an AM strain depends on the properties of the soil where it is introduced. Two data sets from 130 different experiments assessing the outcome of a total of 548 replicated single inoculation trials conducted either in soils with a history of (1) high input agriculture (HIA; 343 replicated trials) or (2) in more pristine soils from coffee plantations (CA; 205 replicated trials) were examined. Plant response to inoculation with different AM strains in CA soils planted with coffee was related to soil properties associated with soil types. The strains Glomus fasciculatum-like and Glomus etunicatum-like were particularly performant in soil relatively rich in nutrients and organic matter. Paraglomus occultum and Glomus mosseae-like performed best in relatively poor soils, and G. mosseae and Glomus manihotis did best in soils of medium fertility. Acaulospora scrobiculata, Diversispora spurca, G. mosseae-like, G. mosseae and P. occultum stimulated coffee growth best in Chromic, Eutric Alluvial Cambisol, G. fasciculatum-like and G. etunicatum-like in Calcaric Cambisol and G. manihotis, in Chromic, Eutric Cambisols. Acaulospora scrobiculata and Diversispora spurca strains performed best in Chromic Alisols and Rodic Ferralsols. There was no significant relationship between plant response to AM fungal strains and soil properties in the HIA soil data set, may be due to variation induced by the use of different host plant species and to modification of soil properties by a history of intensive production. Consideration of the performance of AM fungal strains in target soil environments may well be the key for efficient management of the AM symbiosis in plant production.

Germination and growth of purple passion fruit seedlings under pre-germination treatments and mycorrhizal inoculation1

“…Despite the known benefits of plant mycorrhization, several conditions, such as soil type, fungus strain and host genotype, may limit association efficacy (Herrera-Peraza et al 2011). Therefore, specific research should be performed for each plantmycorrhiza symbiosis for successful crop development.…”

Relaciones entre los hongos filamentosos y solubilizadores de fosfatos con algunas variables edáficas y el manejo de cafetales

“…El origen volcánico del suelo implica la presencia de fósforo, pero este se encuentra entre un 54-90% inmovilizado por el aluminio y hierro no cristalinos, lo cual repercute en una escasa disponibilidad de este nutriente, constituyendo un serio limitante para el crecimiento de las plantas naturales y los cultivos (Geissert & Ibañez 2008, Codazzi 2009). La escasa movilidad y alta retención edáfica de este nutriente, acompañados de la condición ácida de la mayoría de los suelos han llevado al uso de diferentes estrategias para abastecer las demandas del cultivo, principalmente mediante el suministro de enmiendas orgánicas y/o quí-micas (Arcila et al 2007, Hernández-Martínez 2008 y la aplicación de hongos que forman micorriza arbuscular (Rodríguez 2001, Cardoso & Kuyper 2006, Herrera-Peraza et al 2011, pero en este cultivo no se ha implementado el uso de hongos solubilizadores de fosfatos.…”

Water availability and formation of propagules of arbuscular mycorrhizal fungi associated with sorghum

“…Herrera-Peraza et al (2011) suggested that inoculant production should consider the edaphic conditions in which the inoculant is applied, since the compatibility of the AMF isolate and mycorrhizal colonization can be modulated by soil type. Among the properties of the soil, pH interferes in germination, mycorrhizal colonization and formation of propagules.…”