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All Journal HAYATI Journal of Biosciences Vegetalika Jurnal Ilmu Pertanian Jurnal Ilmu Lingkungan Gontor AGROTECH Science Journal Jurnal Agro Planta Tropika Infotech Journal Panrita Abdi - Jurnal Pengabdian pada Masyarakat Kultivasi Agriprima : Journal of Applied Agricultural Sciences Caraka Tani: Journal of Sustainable Agriculture Jurnal Agrotek Tropika jurnal Ilmu Pertanian (Agricultural Science) Floribunda Penbios: Jurnal Pendidikan Biologi dan Sains J-PEN Borneo : Jurnal Ilmu Pertanian JURNAL AGROSAINS : Karya Kreatif dan Inovatif ABDIPRAJA (Jurnal Pengabdian kepada Masyarakat) Proceedings Series on Physical & Formal Sciences PESARE: Science and Engineering Service Journal Biosaintifika: Journal of Biology & Biology Education Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Eka Oktaviani
Department Of Agrotechnology, Faculty Of Agriculture, Universitas Jenderal Soedirman
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Mechanical Engineering Public Health Social Sciences Other

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Improving Phosphate-Solubilizing Rhizobacteria Strains via Mutation to Enhance Phosphorus Availability in Acidic Soils Nugroho, Adin Heriyan; Putri, Faizzah Kahfi; Sya'diyah, Hamda Hamidatu; Fatmawati, Aprilia; Ghiffar, Hafidho Muntazul; Oktaviani, Eka
Jurnal Ilmu Pertanian Vol 11, No 1 (2026): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.111550

Abstract

Acid-dry land is a suboptimal land area widely distributed in Indonesia, which has the potential to be developed as cropland to increase crop productivity. However, the low phosphorus availability in this land type often constrains plant growth, necessitating the use of microbial phosphate-solubilizing agents. To address this, the capability of the isolated rhizobacteria strain in phosphate solubilization was improved through a mutagenesis by Ethyl Methane Sulphonate (EMS). Three isolates of indigenous wild-type rhizobacteria of acid-dry land were isolated from cardamom, lemon grass, and bamboo rhizosphere. Mutagenesis of these wild-types yielded three mutant isolates, including KPG_m, SRH_m, and BMB_m, which exhibited higher Phosphate-Solubilization Indices (PSI) compared to their parental strains. The PSI values for the mutants were 2.2, 3.4, and 2.0, respectively, showing a marked improvement over the wild-type values of 2.0, 1.75, and 1.25. These results indicate an enhancement in phosphate-solubilizing ability driven by EMS mutagenesis. All the isolates were then characterized and showed similar traits to those of the Genus of Bacillus. According to the hypersensitive reaction assay, the six isolates showed a negative reaction, indicating they are non-pathogenic. Based on these findings, the mutants have the potential to be developed as biofertilizer agents due to they are non-pathogenic for plants. In addition, the mutants have a moderate PSI value (2<PSI<4) and effective solubilization rate that may improve phosphate solubilization process in acid-dry land.
Co-Authors Agleri Rante Agung Prasetyo Fitrianto Agus Riyanto Agus Suroto Alifia Khairunnisa Amalia, Dwi Ayu Lutfiana Anisa Nur Afni Rahmadhani Annisa Nur Rachmah Ari Asnani Arina Tri Lunggani Arina Tri Lunggani Arnia Sari Mukaromah Asri Febriana Bahrudin, Muhammad Efitra Efitra Endang Mugiastuti Endang Mugiastuti Etik Wukir Tini Fatmawati, Aprilia Fauziah, Jihan Nur Fifi Nafisah Galuh Muthia Dewi Ghiffar, Hafidho Muntazul Imastini Dinuriah Isa Nuryana Isnaendi Agung Abadi Isnaeni, Fenty Chakimatul Kurniawan, Ruly Eko Kusuma Laila ayu Museltisari Leana, Ni Wayan Anik M ifdhol Jofi Andrian Maya Ekaningtias Muhammad Bahrudin Muhtadinal Mufasirin Muthia Hanin Afidani Nadya Riezqi Rahman Ni Wayan Anik Leana Niken Kusumarini Noor Farid Noor Farid Nugroho, Adin Heriyan Nuhrizky Saputra Nurhalizah Syaqila Omer, Omer Ahmed Mohamed Prasmadji Sulistyanto Prasmaji Sulistyanto Priswanto Priswanto, Priswanto Purwanto Purwanto Purwanto Purwanto Purwanto Purwanto Putri, Faizzah Kahfi Ravi Izza Alfani Rejeki Siti Ferniah Reki Hasanain Haikal Rinanda Gandhi Ningrum Prasetia Siti Nurchasanah Slamet Rohadi Suparto Suprayogi Susanti, Retna Sya'diyah, Hamda Hamidatu Syamsiar, Syamsiar Tarjoko Tarjoko Tarjoko Tarjoko Tarjoko Tarjoko Tarjoko, Tarjoko Totok Agung Dwi Haryanto Ulinnuha, Zulfa Wulansari, Nur Kholida