Differential effects of two strains of Rhizophagus intraradices on dry biomass and essential oil yield and composition in Calamintha nepeta.

ROXANA P. COLOMBO; ALICIA E. MARTÍNEZ; AGUSTINA, FERNÁNDEZ DE PARDO1; LAURA, FERNÁNDEZ BIDONDO; ALICIA M. GODEAS

REVISTA ARGENTINA DE MICROBIOLOGíA

ASOCIACION ARGENTINA MICROBIOLOGIA

Lugar: Buenos Aires; Año: 2013 vol. 45 p. 114 - 118

0325-7541

The aim of this work was to determine the effects of two geographically different strainsof Rhizophagus intraradices (M3 and GA5) on the total biomass and essential oil (EO)yield and composition of Calamintha nepeta, with or without phosphorus (P) fertilization,under greenhouse conditions. The plant biomass was not signifi cantly affected by any ofthe treatments, showing higher values in control plants. Strains had a differentialresponse in their root colonization rates: M3 reduced these parameters while GA5 did notmodify them. Both strains affected EO yield in absence of P fertilization: M3 promotedEO yield in C. nepeta plants and GA5 resulted in negative effects. The percentagecomposition of EO was not signifi cantly modifi ed by either strain or P fertilization. M3strain could be a potential fungal bioinoculant for production and commercialization ofC. nepeta in the aromatic plant market