AIMS: To isolate and identify antioomycete substances from Fusarium oxysporum EF119 against Phytophthora infestans and to investigate their antimicrobial activities against various plant pathogenic bacteria, oomycetes and true fungi. METHODS AND RESULTS: Two antioomycete substances were isolated from liquid cultures of F. oxysporum EF119, which shows a potent disease control efficacy against tomato late blight caused by P. infestans. They were identified as bikaverin and fusaric acid by mass and nuclear magnetic resonance spectral analyses. They inhibited the mycelial growth of plant pathogenic oomycetes and fungi. Fusaric acid also effectively suppressed the cell growth of various plant pathogenic bacteria, but bikaverin was virtually inactive. Treatment with bikaverin at 300 microg ml(-1) suppressed the development of tomato late blight by 71%. Fusaric acid provided effective control against tomato late blight and wheat leaf rust over 67% at concentrations more than 100 microg ml(-1). CONCLUSIONS: Both bikaverin and fusaric acid showed in vitro and in vivo antioomycete activity against P. infestans. SIGNIFICANCE AND IMPACT OF THE STUDY: Fusarium oxysporum EF119 producing both bikaverin and fusaric acid may be used as a biocontrol agent against tomato late blight caused by P. infestans.
AIMS: To isolate and identify antioomycete substances from Fusarium oxysporum EF119 against Phytophthora infestans and to investigate their antimicrobial activities against various plant pathogenic bacteria, oomycetes and true fungi. METHODS AND RESULTS: Two antioomycete substances were isolated from liquid cultures of F. oxysporum EF119, which shows a potent disease control efficacy against tomato late blight caused by P. infestans. They were identified as bikaverin and fusaric acid by mass and nuclear magnetic resonance spectral analyses. They inhibited the mycelial growth of plant pathogenic oomycetes and fungi. Fusaric acid also effectively suppressed the cell growth of various plant pathogenic bacteria, but bikaverin was virtually inactive. Treatment with bikaverin at 300 microg ml(-1) suppressed the development of tomato late blight by 71%. Fusaric acid provided effective control against tomato late blight and wheat leaf rust over 67% at concentrations more than 100 microg ml(-1). CONCLUSIONS: Both bikaverin and fusaric acid showed in vitro and in vivo antioomycete activity against P. infestans. SIGNIFICANCE AND IMPACT OF THE STUDY: Fusarium oxysporum EF119 producing both bikaverin and fusaric acid may be used as a biocontrol agent against tomato late blight caused by P. infestans.
Authors: Wilfried Jonkers; Alma E Rodriguez Estrada; Keunsub Lee; Andrew Breakspear; Georgiana May; H Corby Kistler Journal: Appl Environ Microbiol Date: 2012-03-09 Impact factor: 4.792
Authors: D Nirmaladevi; M Venkataramana; S Chandranayaka; A Ramesha; N M Jameel; C Srinivas Journal: Cell Mol Neurobiol Date: 2014-05-22 Impact factor: 5.046
Authors: Frankie K Crutcher; Lorraine S Puckhaber; Robert D Stipanovic; Alois A Bell; Robert L Nichols; Katheryn S Lawrence; Jinggao Liu Journal: J Chem Ecol Date: 2017-10-06 Impact factor: 2.626
Authors: Marcela Gamboa-Angulo; Gloria M Molina-Salinas; Manuel Chan-Bacab; Sergio R Peraza-Sánchez; Gabriela Heredia; Susana C de la Rosa-García; Manuela Reyes-Estebanez Journal: Parasitol Res Date: 2012-10-21 Impact factor: 2.289