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All Journal Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia
Bedah Rupaedah, Bedah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Health Professions Immunology & microbiology

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SYRINGIC ACID AND PHENAZINE PRODUCED BY AN ENDOPHYTIC Pseudomonas aeruginosa STRAIN G-111-0317 AND THEIR ACTIVITIES AGAINST Ganoderma boninense Rupaedah, Bedah; Nurlaila, Nurlaila; Lutfia, Anisa
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 10 No. 1 (2023)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2023.1703

Abstract

Syringic acid and phenazine possess antibiotic and antifungal properties, and have demonstrated effectiveness in inhibiting the colonization of Ganoderma boninense on oil palm plants. Some bacteria, including Pseudomonas aeruginosa strain G-111-0317, are capable of producing syringic acid and phenazine. In this study, the culture extract of this bacterial strain was obtained from healthy oil palm plants growing in G. boninense-infected areas at Oil Plant Plantation Pematang Siantar, North Sumatra. The strain was cultured on Nutrient Broth (NB) medium, and the resulting culture filtrate was extracted using ethyl acetate (EtOAc) and concentrated under vacuum. The putative compounds were identified by LC-MS, employing syringic acid and phenazine as reference standards. Antifungal activity against G. boninense in vitro was observed in the EtOAc extract obtained after 8 hours and 24 hours of fermentation, with the 8-hour extract demonstrating the highest activity. These compounds hold promising potential as active agents in inhibiting basal stem rot disease in oil palm plants.
SCREENING AND CHARACTERIZATION OF SOIL FUNGAL ISOLATES FOR INHIBITING THE GROWTH OF Ganoderma boninense Haqqa, Zhafira Amila; Rupaedah, Bedah; Handayani, Indri; Wahid, Abdul; Sugianto, Mahmud
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 10 No. 1 (2023)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2023.1747

Abstract

Ganoderma boninense, a fungus recognized as a causative agent of basal stem rot and upper stem rot, is primarily found in oil palm plantations (Elaeis guineensis Jack.). This study aimed to identify soil fungal isolates with the greatest potential for inhibiting the pathogenic fungus G. boninense. The research employed curative antagonist testing using in vitro dual culture. Fungal isolates demonstrating the highest inhibition percentages were characterized through macroscopic and microscopic observation, and their hemolysis properties were assessed using blood agar media. Soil fungal isolates FA 3.8 and FA 2.8 exhibited the highest inhibition percentages, reaching 91% and 88%, respectively. Based on morphological characterization at both macroscopic and microscopic levels, FA 3.8 displayed similarities to Trichoderma, while FA 2.8 exhibited similarities to Penicillium. Hemolysis testing results on blood agar media indicated that both isolates exhibited gamma hemolysis or non-hemolysis, as they lacked red blood lysis properties.
Co-Authors A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri Abdul Wahid Agus Supriyo, Agus AGUS SUYONO Amanda, Debby Viola Amanda, Debby Viola Anna Safarrida, Anna Asep Ali, Asep Asiani, Nia Asiani, Nia Budiyanto Budiyanto Candrawati, Emilia Candrawati, Emilia Farida Rosana Mira, Farida Rosana Firmansyah, Taufik Firmansyah, Taufik Haqqa, Zhafira Amila Indri Handayani, Indri Lutfia, Anisa Mahmud Sugianto, Mahmud Nurlaila Nurlaila purwoko, devit R Bambang Sukmadi, R Bambang Reni Indrayanti Sudjai, Imam Sukmadi, Bambang Sukmadi, Bambang Sumpono Sumpono, Sumpono Teuku Tajuddin Wiwik Handayani YENNI BAKHTIAR Yuichiro Takahashi, Yuichiro