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Revista mexicana de fitopatología

versão On-line ISSN 2007-8080versão impressa ISSN 0185-3309


TRINIDAD-CRUZ, Jesús Rafael et al. Mycorrhization of Agave cupreata: Biocontrol of Fusarium oxysporum and plant growth promotion. Rev. mex. fitopatol [online]. 2017, vol.35, n.2, pp.151-169. ISSN 2007-8080.

The effect of mycorrhizal of Agave cupreata in the biocontrol of Fusarium oxysporum and promoting plant growth was evaluated. In greenhouse, seeds of A. cupreata were inoculated with four consortia of arbuscular mycorrhizal fungi (AMF) native: The Huizachal (EH), Agua Dulce (AD), Paso Ancho (PA) and Cerro del Metate (CM), a commercial inoculum mycorrhizal INIFAP® (MI) and a control without AMF. Seven months after inoculating of the AMF, in a group of plants with and without mycorrhizal was evaluated the promoting plant growth and another similar group of plants were inoculated with or without Fusarium oxysporum FPC (Fox) to evaluate the potential biocontrol effect of AMF. The results showed that mycorrhizal plants increased significantly (Tukey, p≤0.05) dry biomass total, in a range between 148 and 239 % more than the control without AMF. At 240 days after inoculation of Fox; the treatments PA+Fox and MI+Fox showed a reducing significant (Kruskal-Wallis, p≤0.05) in the severity of agave wilt, averaging 33 % damage compared to the control+Fox, which presented damage of 74 %. PA and MI may be considered as potential biofertilizers and biocontrol agents of F. oxysporum in the cultivation of agave.

Palavras-chave : Arbuscular mycorrhizal fungi; AMF native consortia; agave wilt; Rhizophagus intraradices; bioprotection against plant-pathogens.

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