wilt biological control oomycete Introduction Keywords actinobacteria actinomycetes Capsicum annuum L. Molecular identification indicated that strains ABV39, ABV38 and ABV45 belong to the genus Streptomyces, of which ABV38 and ABV45 have potential for biorational control of pepper wilt.
Strain ABV39 did not show a wilt suppressive effect (0 % survival), and nor did the untreated plants. In the in vivo evaluation, the BCSs of strains ABV38 and ABV45 showed a wilt suppressive effect, with plant survival of 77 and 94 %, respectively.
Under in vitro conditions, strains ABV38, ABV39 and ABV45 inhibited the mycelial growth of PC CH11 by 51, 28 and 50 %, respectively. Molecular identification of the strains was carried out by analyzing the partial sequence of the 16S rRNA gene. capsici CH11 (PC CH11) to evaluate wilt suppression. Broth culture supernatant (BCS) from the growth of the strains was irrigated on pepper plants inoculated with P. The in vitro antagonistic activity of strains ABV38, ABV39 and ABV45 was examined by means of dual confrontation tests. capsici under in vitro and in vivo conditions. Therefore, this study aimed to evaluate the effect of Streptomyces spp. Pepper wilt, caused by Phytophthora capsici, is one of the main threats faced during pepper production.
This is an open-access article distributed under the terms of the Creative Commons Attribution License Tablaje Catastral 31264, Carretera Sierra Papacal-Chuburná Puerto km 5.5, Parque Científico y Tecnológico de Yucatán, Mérida, Yucatán, C. 2Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ) - Subsede Sureste.1227, El Bajío del Arenal, Zapopan, Jalisco, C. 1Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ).Epub: 2007-4034 Scientific article Biorational control of Phytophthora capsici in pepper plants using Streptomyces spp.