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- Title
Characterization of Trichoderma species isolated in Ecuador and their antagonistic activities against phytopathogenic fungi from Ecuador and Japan.
- Authors
Galarza, Luis; Akagi, Yasunori; Takao, Kazumi; Kim, Chang; Maekawa, Nitaro; Itai, Akihiro; Peralta, Esther; Santos, Efrén; Kodama, Motoichiro
- Abstract
Native Trichoderma spp. were isolated from agricultural fields in several regions of Ecuador. These isolates were characterized via morphological observation as well as molecular phylogenetic analysis based on DNA sequences of the rDNA internal transcribed spacer region, elongation factor-1α gene and RNA polymerase subunit II gene. Fifteen native Trichoderma spp. were identified as T. harzianum, T. asperellum, T. virens and T. reesei. Some of these strains showed strong antagonistic activities against several important pathogens in Ecuador, such as Fusarium oxysporum f. sp. cubense (Panama disease) and Mycosphaerella fijiensis (black Sigatoka) on banana, as well as Moniliophthora roreri (frosty pod rot) and Moniliophthora perniciosa (witches' broom disease) on cacao. The isolates also showed inhibitory effects on in vitro colony growth tests against Japanese isolates of Fusarium oxysporum f. sp. lycopersici, Alternaria alternata and Rosellinia necatrix. The native Trichoderma strains characterized here are potential biocontrol agents against important pathogens of banana and cacao in Ecuador.
- Subjects
TRICHODERMA; FUSARIUM oxysporum; NUCLEOTIDE sequence; RNA polymerases; PHYTOPATHOGENIC microorganisms
- Publication
Journal of General Plant Pathology, 2015, Vol 81, Issue 3, p201
- ISSN
1345-2630
- Publication type
Article
- DOI
10.1007/s10327-015-0587-x