The temporal and spatial expression of a bean chitinase promoter has been investigated in response to fungal attack. Analysis of transgenic tobacco plants containing a chimeric gene composed of a 1.7-kilobase fragment carrying the chitinase 5B gene promoter fused to the coding region of the gus A gene indicated that the chitinase promoter is activated during attack by the fungal pathogens Botry...

The antagonistic potential of Trichoderma strains was assayed by studying the effect of their culture filtrate on the radial growth of Sclerotium rolfsii, the causal agent of chickpea collar rot. Trichoderma harzianum-1432 (42.2%) and Trichoderma atroviride (40.3%) were found to be strong antagonists. To enhance their antagonistic potential, mutagenesis of these two selected strains was perform...

Fusarium oxysporum dan Sclerotium rolfsii merupakan patogen tular tanah yang berbahaya bagi tanaman karena tersebut dapat bertahan lama di dalam tanpa inang. Pengendalian sering dilakukan adalah dengan menggunakan fungisida sintetik mengakibatkan pencemaran lingkungan keracunan pada manusia. Salah satu alternatif pengendalian aman dikembangkan penggunaan nabati seperti ekstrak daun Melastoma ma...