AISLAMIENTO, IDENTIFICACIÓN Y EVALUACIÓN IN VITRO DE AISLADOS NATIVOS DE Bacillus, Trichoderma Y Streptomyces CON POTENCIAL PARA EL BIOCONTROL DE LOS HONGOS DE LA MADERA DE LA VID

Arturo Morales-Pizarro, Javier Javier-Alva, L. A. Álvarez, Rocío Mayta-Obos, René Aguilar-Anccota, Ricardo Peña-Castillo, Roger Chanduvi-García, David Lindo-Seminario

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

7 Citas (Scopus)

Resumen

Background: Biocontrol of grapevine trunk diseases (GTDs) is a friendly alternative to chemical control that cause resistance and contamination of the ecosystems. Objective: isolate native grapevine root and rhizosphere microorganisms with biocontrol potential of grapevine trunk fungi diseases. Methodology: The competition for substrate (CS) was studied with the Bell's scale, contact time (CT) between the antagonist-pathogen (days) and the growth inhibition percentage (GIP). Results: Seven Trichoderma strains were isolated (from roots: Tr-1, Tr-2, Tr-3, Tr-6; and from rhizosphere: Tr-4, Tr-5 Tr-7); six Bacillus spp. (from roots: Bac-4, Bac-5, Bac-6; and from rhizosphere: Bac-1, Bac-2, Bac-3); and two Streptomyces sp. (Act-1, Act-2). The CS results evaluated with the Bell scale showed Tr-1, Tr-7, T.atv (Trichoderma atroviride) and T-22 (Trichoderma harzianum) were placed in class 1 against Lasiodiplodia theobromae and, all isolates were placed in class 1 against Campylocarpon pseudofasciculare and Phaeoacremonium parasiticum. The CT of Trichoderma was 2 days (L. theobromae) and 3 days (C. pseudofasciculare and P. parasiticum). In the antibiosis test, Tr-5 (Trichoderma) and Bac-3 (Bacillus) had the highest GIP values (>50%) against the different evaluated pathogens. The isolate Act-2 (Streptomyces sp.) presented a GIP, >70% (L. theobromae), and >40% (C. pseudofasciculare) and >30% (P. parasiticum). Implications: The use of biological control in the management of grapevine trunk diseases is an effective tool, and can be integrated into an integrated management strategy for these pathologies. Conclusions: The native isolates Bac-3 (Bacillus spp.), Tr-5 (Trichoderma spp.), Act-2 (Streptomyces sp.) demonstrated in vitro control against the pathogens L. theobromae, C. pseudofasciculare and P. parasiticum, pathogens associated to grapevine trunk diseases.

Título traducido de la contribuciónISOLATION, IDENTIFICATION AND IN VITRO EVALUATION OF NATIVE ISOLATES OF Bacillus, Trichoderma AND Streptomyces WITH POTENTIAL FOR THE BIOCONTROL OF GRAPEVINE TRUNK FUNGI
Idioma originalEspañol
Número de artículo4206
PublicaciónTropical and Subtropical Agroecosystems
Volumen25
N.º2
DOI
EstadoPublicada - may. 2022

Palabras clave

  • Antagonists
  • biocontrol
  • grapevine trunk fungi
  • rhizosphere
  • root
  • table grape

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