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| Titel: |
Biocontrol potential of Trichoderma Sp. against plant pathogens |
| Auteur: |
Anand S. Jayarama Reddy |
| Verschenen in: |
International journal of agriculture sciences |
| Paginering: | Jaargang 1 (2009) nr. 2 pagina's 30-39 |
| Jaar: |
2009 |
| Inhoud: |
Forty two strains of Trichoderma sp. were isolated from cultivated lands around Bangalore andanalyzed for their antagonistic potential against Sclerotium rolfsii and Fusarium ciceri. The potential ofbiocontrol agents ultimately lies in their capacity to control pathogens in vivo. Bioefficacy studies were henceconducted using chickpea (Cicer argentums c.v. Annigeri) as an experimental plant by the roll paper towelmethod. Overall the isolates T40, T35, T30 and T25 showed better antagonistic potential in addition toenhancing plant growth. The production of chitinases to break down the mycelial cell walls of fungal plantpathogens has been implicated as a major cause of biocontrol activity (Inbar and Chet, 1995). In order tostudy the mechanism of biocontrol, ten better performing strains were plated on media, amended withcolloidal chitin and Sclerotium rolfsii cell wall extract. All the isolates showed chitinolytic activity on day threeas well as day five. Production of endochitinase and exochitinase were assayed in liquid media usingcolloidal chitin amended broth. Strains T35 and T6 displayed maximum endochitinase and exochitinaseactivity. Although all strains exhibited cellulase activity, the quantum of enzyme produced was higher in T35and T6. The results also indicate a positive correlation between enzyme production and bioefficacy. |
| Uitgever: |
Bioinfo Publications (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 3 van 13 gevonden artikelen
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