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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI Forum Pasca Sarjana Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Journal of Marine Research Microbiology Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology Journal of Tropical Soils JURNAL PERBENIHAN TANAMAN HUTAN Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Journal of Tropical Biodiversity and Biotechnology BERITA BIOLOGI ZOO INDONESIA PROSIDING SEMINAR NASIONAL CENDEKIAWAN Jurnal Teknologi Mineral dan Batubara Journal of Tropical Crop Science Menara Perkebunan Zoo Indonesia Rona Teknik Pertanian
Sri Wilarso Budi R
Departemen Silvikultur, Fakultas Kehutanan IPB Univeristy
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Medicine & Pharmacology Social Sciences Veterinary Other

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Journal : Microbiology Indonesia

 1 
Isolation and Identification of Mycorrhizosphere Bacteria and Their Antagonistic Effects Towards Ganoderma boninense in vitro YENNI BAKHTIAR; SUDIRMAN YAHYA; WAHONO SUMARYONO; MEITY SURADJI SINAGA; SRI WILARSO BUDI; TEUKU TAJUDDIN
Microbiology Indonesia Vol. 4 No. 2 (2010): August 2010
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8578.755 KB) | DOI: 10.5454/mi.4.2.9

Abstract

Basal stem rot caused by Ganoderma boninense is the most serious disease of oil palm (Elaeis guineensis) in Indonesia and it has caused major loss in palm oil production. Mycorrhizosphere bacteria offer possible advantages as biocontrol agents as they live and proliferate together with arbuscular mycorrhizal fungi, which have an ability to increase plant resistance against pathogens. A study was conducted to isolate mycorrhizosphere bacteria from spores of arbuscular mycorrhizal fungi and test their antagonistic effects against G. boninense in vitro. All bacterial isolates were identified based on 16S rDNA analysis and it revealed that eleven out of twenty mycorrhizosphere bacteria isolated were related to Bacillus with similarity ranging from 97 to 100%, whereas other isolates were identified as Pseudomonas, Streptomyces, Kocuria, Enterobacter, Brevundimonas, and Alcaligenes with similarities ranging from 96 to 100%. Fourteen out of twenty mycorrhizosphere bacteria showed a varying degree of inhibition towards the growth of G. boninense in vitro. Of these, isolate B10 (closely related to Bacillus subtilis ZJ06) showed the highest inhibitory effect followed by B17 (closely related to Bacillus subtilis N43). Therefore, these bacteria have a potential to be used as biocontrol agents to control basal stem rot disease caused by G. boninense in oil palm.
Adaptation of Oil Palm Seedlings Inoculated with Arbuscular Mycorrhizal Fungi and Mycorrhizal Endosymbiotic Bacteria Bacillus subtilis B10 towards Biotic Stress of Pathogen Ganoderma boninense Pat YENNI BAKHTIAR; SUDIRMAN YAHYA; WAHONO SUMARYONO; MEITY SURADJI SINAGA; SRI WILARSO BUDI
Microbiology Indonesia Vol. 6 No. 4 (2012): December 2012
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (775.433 KB) | DOI: 10.5454/mi.6.4.3

Abstract

The effects of mycorrhizal endosymbiotic bacteria Bacillus subtilis B10 and composite of arbuscular mycorrhizal fungal spores in green house experiment were examined in order to evaluate their effectiveness and compatibility with oil palm seedlings in the presence of a fungal pathogen Ganoderma boninense, the most serious pathogen in oil palm (Elaeis guineensis Jacq) in Indonesia. A three factors experiment were conducted, with mycorrhizal inoculation (M0 and M1), bacterial B. subtilis B10 inoculation (B0 and B1), and G. boninense inoculation (G0 and G1) as the first, second, and third factors, respectively. The results showed that disease severity index, plant height, root dry-weight, and phosphorus uptake were affected by co-inoculation of mycorrhizal endosymbiotic bacteria B. subtilis B10 and composite of arbuscular mycorrhizal fungi. Co-inoculation of mycorrhizal endosymbiotic bacteria B. subtilis B10 and arbuscular mycorrhizal fungi did not only reduce the percentage of basal stem rot incidence, but also significantly increased plant height and phosphorus uptake by oil palm seedlings. Our results suggest that in oil palm seedlings mycorrhizal endosymbiotic bacteria B. subtilis B10 worked synergistically with arbuscular mycorrhizal fungi in increasing plant adaptation toward biotic stress of pathogen G. boninese and could be promising biocontrol agents.
Bacteria Associated with Arbuscula Mycorrhizal Spores Gigaspora margarita and Their Potential for Stimulating Root Mycorrhizal Colonization and Neem (Melia azedarach Linn) Seedling Growth SRI WILARSO BUDI; YENNI BAKHTIAR; NUNANG LAMAEK MAY
Microbiology Indonesia Vol. 6 No. 4 (2012): December 2012
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (654.598 KB) | DOI: 10.5454/mi.6.4.6

Abstract

Four isolates (BGi1, BGi2, BGi3, and BGi4) bacteria were isolated from surface sterilized arbuscular mycorrhizal fungi (AMF) spores of Gigaspora margarita (Gm). Based on 16S rDNA analyses and phylogenetic tree, it was revealed that isolates BGi1, BGi3 and BGi4 belong to genus Bacillus, whereas BGi2 was very close  to Bacillus megaterium EG 24. Enzymatic activity test showed that all four isolates had cellulase and protease activities; while one isolate (Bacillus sp. BGi4) also has pectinase activity in addition to the celulase  and protease activities. Dual inoculation of Melia azedarch Linn roots by B. megaterium BGi2  and AMF spores G. margarita enhanced mycorrhizal root colonization by 58.3 %. Combination of Bacillus sp. BGi1 and G. margarita increased  height, diameter, shoot biomass, and root biomass of  M. azedarch by  353, 4.8, 4546, and 2810%, respectively,  in comparison to the uninoculated control plant.
Co-Authors , Hariyadi AAboe B. Saidi Abdurrani Muin Adisti Permatasari Putri Hartoyo Agustina Puspita Dewi Aji Nuralam Dwisutono Akhmad Wahyudi Alfi Laila Zuhriansah Allaily Allaily Andi Sukendro Ani Kurniawati Arif Budi Setiawan Arum Sekar Wulandari Atang Sutandi Bambang S. Purwoko Baskoro Rochaddi Basuki Wasis Bedah Rupaedah Berry Oktavianto Betty Purwati Cahyo Wibowo Ceng Asmarahman Corryanti . Corryanti Corryanti Corryanti Corryanti Dadan Mulyana Dida Syamsuwida Didah Nur Faridah Didy Sopandie DWI ANDREAS SANTOSA Dwi Puspasari Arum Ramadhani Endah Retno Palupi Endang Suhendang Eny Widajati Erdy Santoso Erdy Santoso Faisal Al Asad Fatimah Nur Istiqomah Fiona Christina Fransisca Yosina Regina Luturmas Gunawan Gunawan Hamim Hamim Husna Husna Husna Husna Hutami Indah Pertiwi Ikbal . Ikbal Ikbal Imam Wahyudi Indrawan, Imam Wahyudi Intan Fajar Kemala Irdika Mansur Iskandar . Iskandar Iskandar Iskandar M. Lapanjang Iskandar Z Siregar ISKANDAR ZULKARNAEN SIREGAR Istomo . Iswandi Anas JAYANI, FARADILA MEI Jumadil Akhir Kartika Megawati Kartini Kramadibrata Kartini Kramadibrata Khoryfatul Munawaroh Lina Karlinasari Luluk Setyaningsih Maman Turjaman Maman Turjaman Maman Turjaman Maman Turjaman Maman Turjaman Maryani Fatimah Putri Hardhani Maya Melati MEITY SURADJI SINAGA MEITY SURADJI SINAGA Mohammad Agus Salim Mohammad Agus Salim Salim Muhammad Helmi Muttaqin, Zainal Nelly Fridayanti Noor F Mardatin NUNANG LAMAEK MAY Nurheni Wijayanto Panca Dewi MH Karti Prijanto Pamoengkas Putri Aurum Putri Aurum Rahmawati Rahmawati Sabti Indah Purwanti Safinah S. Hakim S Hakim Safinah Surya Hakim Satriyas Ilyas Siti Hanna Ghaida Sri Muryati Sri Muryati Sri Muryati Sudirman Yahya SUDIRMAN YAHYA Tedi Yunanto Teuku Tajuddin Tirsa Eka Saputri Ulfah Juniarti Siregar Wahono Sumaryono Yadi Setiadi Yadi Setiadi Yan Eka Prasetyawati YENNI BAKHTIAR YENNI BAKHTIAR YENNI BAKHTIAR Zainal Muttaqin