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Journal : Jurnal AgroBiogen

Identifikasi Entomopatogen Bakteri Merah pada Wereng Batang Coklat (Nilaparvata lugens Stål.) Tri Puji Priyatno; Yohana A Dahliani; Yadi Suryadi; I Made Samudra; Dwi Ningsih Susilowati; Iman Rusmana; Baskoro S Wibowo; Cahyadi Irwan
Jurnal AgroBiogen Vol 7, No 2 (2011): Oktober
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v7n2.2011.p85-95

Abstract

Indentification of Entomopathogenic Red Bacterial fromBrown Planthopper (Nilaparvata lugens Stål.). Tri P.Priyatno, Yohana A. Dahliani, Yadi Suryadi, I MadeSamudra, Dwi N. Susilowati, Iman Rusmana, Baskoro S.Wibowo, and Cahyadi Irwan. Red bacteria isolated frombrown planthopper (BPH) has been proven pathogenicagainst BPH and others insects. Application of 106 to 107cells/ml of red bacteria caused 65.6-78.2% mortality of BPH.The 50% effective concentration (EC50) and lethal time of redbacteria against BPH is 2.8 x 105 cells/ml and 6.8 days,respectively. Based on phenotypic characters tested on GNMicroPlateTM Biolog kit and 16S rRNA sequneces analysis,red bacteria was identified as Serratia marcescens with 99%similarity. Red pigmen produced by S. marcescens strainBPH is secondary metabolite determined as prodigiosinshowing bactericidal activities against Xanthomonas oryzaepv. oryzae. We concluded that S. marcescens did not onlypotent as biocontrol agent to BPH, but also it can be used tocontrol plant pathogenic bacteria.
Pengaruh Media terhadap Produksi Prodigiosin Isolat Bakteri Entomopatogen Serratia marcescens Asal Wereng Batang Cokelat Ifa Manzila; Tri P. Priyatno; Rahminovita Herlis; Iman Rusmana; I Made Samudra; Yadi Suryadi
Jurnal AgroBiogen Vol 10, No 2 (2014): Agustus
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v10n2.2014.p77-84

Abstract

Prodigiosin, the red pigment producedby the bacterium Serratia marcescens, is a secondarymetabolite of the family tripyrrole that has been widely usedas an antibiotic in the multifunction treatment ofantibacterial as well as antifungal. This study was aimed tostudy the effect of Luria-Bertani (LB) broth and nutrientbroth (NB) media suplemented with several concentrationsof FeSO4 and CaCO3 on the production and characteristic ofprodigiosin derived from S. marcescens. The study wasarranged in a completely randomized factorial design withfour replications. The LB and NB media were supplementedwith 0, 2.5, 5, and 10 mM CaCO3 and 0, 0.25, 0.5, and 1 mMFeSO4. Results showed a red pigment produced by S.marcescens when cultured on both LB and NB media. Redlikepigmentation was varied when supplemented withdifferent concentration of Fe2+ and Ca2+. The higher theconcentration of Fe2+, the more intense the red color,conversely, the higher the concentration of Ca2+, the lighterthe red color. The interaction was found between the mediaand concentrations of CaCO3 and FeSO4 on the productionof prodigiosin. The highest prodigiosin production wasobtained on NB media supplemented with FeSO4.Meanwhile, the addition of CaCO3 did not affect theprodigiosin production. An addition of 1 mM FeSO4 to LBand NB media produced crude prodigiosin of 486.0 mg/mland 489.0 mg/ml, respectively. Based on purification bycolumn chromatography using silica gel, the prodigiosinproduction on LB and NB media was 378 mg/ml and 450mg/ml, with the purity level of 77.8% and 92%, respectively.Detection of prodigiosin by thin-layer chromatography usingsilica gel showed the red pigment had Rf value of 0.83 andbioautography assay showed there was an antibacterialactivity against Xanthomanas oryzae pv. oryzae.
Potensi Quorum Quencher Bakteri Filosfer dan Rizosfer terhadap Dickeya dadantii Taruna D. Satwika; Iman Rusmana; Alina Akhdiya
Jurnal AgroBiogen Vol 13, No 2 (2017): Desember
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v13n2.2017.p101-110

Abstract

Ekspresi gen-gen virulensi pada Dickeya dadantii diatur oleh proses quorum sensing menggunakan asil-homoserin lakton (AHL) sebagai molekul sinyal. Patogenisitas bakteri tersebut dapat dihambat oleh aktivitas quorum quenching (QQ) bakteribakteri penghasil AHL-laktonase. Tujuan penelitian ini adalah mengisolasi dan mengarakterisasi bakteri penghasil AHLlaktonase asal rizosfer dan filosfer yang berpotensi untuk dikembangkan sebagai quorum quencher untuk D. dadantii. Isolasi bakteri dilakukan dari sampel daun dan sampel tanah rizosfer beberapa komoditas tanaman asal Sukabumi, Tegal, Kupang, dan Wonosobo. Sebanyak 8 dari 79 isolat bakteri yang diperoleh menunjukkan aktivitas QQ terhadap bioindikator Chromobacterium violaceum. Bioasai respons hipersensitif (hypersensitive response) yang dilakukan pada tanaman tembakaumenunjukkan enam (KT2, KT9, KT10, KUT1, TKF2, and WKF3) dari delapan isolat tersebut tidak menimbulkan respons hipersensitif. Keenam isolat tersebut mampu menekan virulensi D. dadantii pada umbi kentang. Sekuen 16S rRNA enam isolat tersebut memiliki kemiripan tertinggi dengan Bacillus cereus, B. aryabhattai, B. acidiceler, dan Micrococcus aloeverae. B. cereus KT9 and B. aryabhattai TKF2 terdeteksi memiliki gen penyandi AHL-laktonase (aiiA). Ini merupakan laporan yang pertama tentang aktivitas QQ pada spesies M. aloeverae, B. aryabhattai, and B. acidiceler. Keberadaan gen aiiA pada B.aryabhattai juga belum pernah dilaporkan sebelumnya. Penelitian ini memberikan informasi baru tentang aktivitas QQ ketiga isolat tersebut dan potensinya sebagai quorum quencher untuk D. dadantii.
Co-Authors Abdjad Asih Nawangsih ACENG RUYANI Achmad Dinoto Aderiana Masthura AKHADIYA, ALINA Alfan Cahyadi Alfisah, Rizal Khoirun Aliati Iswantari Alina Akhdiya Alina Akhdiya ALINA AKHDIYA Amanda, Nisa Widya Angela Mariana Lusiastuti Angela Mariana Lusiastuti Ani Suryani Ani Suryani Ani Widiyati ANIK KUSMIATUN Anja Meryandini Anja Meryandini Antonius Suwanto Apon Zaenal Mustopa Ari Fina Bintarti Ari Fina Bintarti, Ari Fina Aris Tri Wahyudi Armanisa, Khafifah Baskoro S Wibowo Cahyadi, Alfan Cecep Kusmana CECILIA ANNA SEUMAHU CECILIA ANNA SEUMAHU Ciptadi Achmad YUSUP Daniel Djokosetiyanto Darmono Taniwiryono Desniar - - Dewi Puspaningsih DIAH ISKANDRIATI Dian Hendrayanti Dinamella Wahjuningrum Dondin Sajuthi DWI ANDREAS SANTOSA Dwi Ningsih Susilowati Eddy Supriyono Emei Widiyastuti Fachriyan Hasmi Pasaribu Fachriyan Hasmi Pasaribu Faturrahman Faturrahman Ferbiyanto, Andri Fredinan Yulianda Frijona Fabiola Lokollo GALUH WENING PERMATASARI Gunawan Djajakirana Hamim Hamim Happy Widiastuti Hefni Effendi Hessy Novita Hessy Novita I Komang Gede Wiryawan I MADE ARTIKA I Made Samudra Ifa Manzila Ika Roostika Tambunan, Ika Roostika Ika Setianingsih, Ika Indriyani, Yohanna Anisa Irwan Cahyadi It Jamilah KATHARINA JESSICA Khairul Syahputra Kukuh Nirmala Kuntari, Wahyu Budi Lena Novita Lingga, Rahmad Lizawati . Maggy Thenawidjaya Suhartono Maggy Thenawidjaya Suhartono Mahdani, Wilda Mahyarudin, Mahyarudin Manguntungi, Baso Masrukhin Masrukhin Masthura, Aderiana Miftahudin . Mukti Ali MUNTI YUHANA MUTTAQIN, MAFRIKHUL Nedwell, David B. Niken T.M Pratiwi, Niken T.M NISA RACHMANIA MUBARIK Nisa Widya Amanda Novita, Lena Nurfahmi, Riziq Ilham Nurhakiki Nurjanah PRIHASTO SETYANTO Prihasto Setyanto Priyo Handoyo Wicaksono Rahman Rahman Rahman Rahman Rahminovita Herlis RATNA SETYANINGSIH RATNA SETYANINGSIH RATNANINGTYAS, SUSI RIDWAN AFFANDI Rika Indri Astuti RIKA RAFFIUDIN Rina Hesti Utami Risky Hadi Wibowo Risky Hadi wibowo Roedhy Poerwanto Rosadela, Fitri Sipriyadi Sipriyadi Sipriyadi Siti Nur Jannah Sobir Sobir Solly Aryza Sri Budiarti Poerwanto Suhartono Suhartono SUSAN SOKA Syaiful Anwar T. Widiyanto Taruna D. Satwika TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Thenawidjaya, Maggy Tri Eko WAHYONO Tri Handayani Kurniati Tri Handayani Kurniati Tri Muji Ermayanti Tri P. Priyatno Tri Panji Tri Puji Priyatno Tri Widiyanto Tridesianti, Siska Tuasalamony, Mutia Musdalifah Utut Widyastuti Wahyuni, Reza Wibowo, Risky Hadi WIDANARNI WIDANARNI Widiyanto, Tri Wilda Mahdani Wildan Nurusallam Wiraswati, Sri Martina Yadi Suryadi Yani Aryati Yohana A Dahliani Yohanna Anisa Indriyani Yuli Siti Fatma Yuli Siti Fatma YULIN LESTARI Yuni Puji Hastuti Yusli Wardiatno Zaenal Arifin, Sukarya Zulfarina Zulfarina Zulfarina,