RT info:eu-repo/semantics/article
T1 Comparison of the efficacy of Trichoderma and Bacillus strains and commercial biocontrol products against grapevine botryosphaeria dieback pathogens
A1 Langa Lomba, Natalia
A1 González García, Vicente
A1 Venturini Crespo, María Eugenia
A1 Casanova Gascón, José
A1 Barriuso Vargas, Juan José
A1 Martín Ramos, Pablo
K1 Bacillus (Bacteria)
K1 Diplodia seriata
K1 Plant pathology
K1 Plantas -  Enfermedades y plagas
K1 Grapevine trunk diseases
K1 Vid - Enfermedades y plagas
K1 Microbiology
K1 Biological control agents
K1 Sistemas de control biológico
K1 Trichoderma
K1 Vitis vinifera
K1 Vid - Cultivo
K1 Viticulture
K1 Viticultura
K1 Agriculture
K1 Agronomy
K1 Bacillus subtilis
K1 Bacillus velezensis
K1 Neofusicoccum parvum
K1 3108.01 Bacterias
K1 2414 Microbiología
K1 3102 Ingeniería Agrícola
K1 3103 Agronomía
AB Grapevine trunk diseases (GTDs) cause significant yield losses worldwide and limit the lifespan of vineyards. In the last few years, using biological control agents (BCAs) for pruning wound protection has become a promising management strategy for the control of these pathologies. This study aimed to compare the antifungal activities of a grapevine-native Trichoderma harzianum isolate and a high-potential Bacillus velezensis strain against two pathogenic Botryosphaeriaceae species in artificially inoculated, potted, grafted plants under controlled greenhouse conditions, taking three commercial biocontrol products (based on T. atroviride I-1237, T. harzianum T-22, and Bacillus subtilis BS03 strains) as a reference. To reproduce certain field conditions more realistically, inoculation of the protective agents and the pathogens was conducted simultaneously immediately after pruning instead of allowing the BCAs to colonize the wounds before pathogen inoculation. Significant differences in necrosis lengths were detected for both Neofusicoccum parvum- and Diplodia seriata-infected plants, and a remarkable protective effect of Bacillus velezensis BUZ-14 was observed in all cases. Trichoderma-based treatments showed different efficacies against the two pathogenic fungi. While the three tested BCAs resulted in significant reductions in vascular necrosis caused by N. parvum, they did not significantly reduce D. seriata infection compared to the untreated inoculated control. The B. subtilis strain was not effective. The reported results provide support for the potential Bacillus velezensis may have for pruning wound protection against Botryosphaeriaceae fungi, encouraging its evaluation under natural field conditions.
PB MDPI
SN 2073-4395
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/63608
UL https://uvadoc.uva.es/handle/10324/63608
LA eng
NO Agronomy, 2023, Vol. 13, Nº. 2, 533
NO Producción Científica
DS UVaDOC
RD 21-may-2024