Aktivitas Anticendawan Bacillus cereus 11UJ terhadap Rhizoctonia solani dan Pyricularia oryzae

• Main Authors: Yadi Suryadi, I Made Samudra, Tri Puji Priyatno, Dwi Ningsih Susilowati, Puji Lestari, Sutoro Sutoro
• Format: Article
• Language: Indonesian
• Published: Perhimpunan Fitopatologi Indonesia 2015-04-01
• Series: Jurnal Fitopatologi Indonesia
• Subjects: antagonists, gas chromatography mass spectrometry, rice pathogens, secondary metabolytes
• Online Access: http://journal.ipb.ac.id/index.php/jfiti/article/view/9344

<p class="Pa8"><span class="A1"><span>Microbial secondary metabolites is an important resource for antifungal development in disease control strategy. The objective of this study was to screen <em>Bacillus cereus </em>11UJ, an antagonistic rhizosphere bacteria for potential secondary metabolite production against rice fungal pathogens, i.e. <em>Rhizoctonia solani </em>and <em>Pyricularia oryzae</em>. The antagonistic effect of crude exract was evaluated using sterile filter paper discs on PDA medium. The ethyl acetate extracts of the bacterium showed a better antifungal activity to <em>P. oryzae </em>than those of <em>R. solani. </em>The inhibitory effect of the filtrate proved the potency of the isolates to produce antifungal. Analysis of pyrolysis gas chromatography-mass spectrometry showed that <em>B. cereus </em>11UJ produces 3 major compounds i.e; 9,19-cyclolanostan-3-ol, acetate, (3.beta.)- (CAS) cycloartanyl acetate (13.14%); 4-(2’,2’-dimethyl-6’-methyliden-1’-cyclohexyliden)-3-methyl-2-butanone (9.72%); and stigmast-5-en-3-ol oleat (9.09%) which suggested to play an important role in the suppression of rice fungal pathogens.</span></span></p> <p class="Default"> </p>