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All Journal Jurnal Entropi Sainstek Microbiology Indonesia JURNAL ILMU PERTANIAN Biology, Medicine, & Natural Product Chemistry Journal of Tropical Biodiversity and Biotechnology Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN GLASSER Jambura Journal of Chemistry Jurnal Review Pendidikan dan Pengajaran (JRPP) Jurnal Pembelajaran dan Biologi Nukleus JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Jurnal Ilmiah Wahana Pendidikan Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) Jurnal Pendidikan, Sains dan Teknologi Prosiding Seminar Nasional Mini Riset Mahasiswa Jurnal Pengabdian Masyarakat Teknologi Pertanian Journal of Tropical Mycorrhiza HUMANIORASAINS Damhil: Jurnal Pengabdian kepada Masyarakat Inventa: Journal of Science, Technology, and Innovation Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Yuliana Retnowati
Universitas Negeri Gorontalo
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Actinomycetes from Plant Rhizosphere in Gorontalo Karst Area as Plant Growth Promoting Rhizobacteria Citra Leonita Matalauni; Yuliana Retnowati; Abubakar Sidik Katili; Novri Youla Kandowangko; Ani M. Hasan
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.1047-1053

Abstract

This study aimed to describe Actinomycetes from the rhizosphere of plants in the Gorontalo karst area as Plant Growth Promoting Rhizobacteria (PGPR). The research method is based on a quantitative descriptive method. Soil samples from the rhizosphere were collected using a purposive sampling technique from 8 plant species at two locations in the Gorontalo karst region, namely the Tanjung Kramat Hills. The characteristics of PGPR in this study focused on phosphate solubilization ability, Indole Acetic Acid (IAA) production, antagonism against the fungus Fusarium oxysporum, and tolerance to fungicides. Potential PGPR isolates were analyzed for phylogenetic relationships based on 16S rRNA gene sequences. The results showed that there were 6 actinomycetes isolates (RzHKC-01, RzKO-02, RzO-03, RzAK-04, RzPK-05, and RzOC-06) from 8 plant species in the Gorontalo karst region. One actinomycetes isolate, RzPK-05, showed potential as a PGPR with the ability to solubilize phosphate and produce IAA at 0.165 mg/L and 0.133 mg/L, respectively. Isolate RzPK-05 exhibited antagonistic properties against Fusarium oxysporum with an inhibition rate of 82.24% and was tolerant to fungicides such as Captive, Benlate, and Thiramo up to a concentration of 100 mg/L. Molecular analysis based on the 16S rRNA gene and phylogenetic tree reconstruction indicated that the RzPK-05 isolate is closely related to the genus Streptomyces with 100% similarity.
Co-Authors Abubakar Sidik Katili Abubakar Sidik Katili Agustina, Harista Ahmad, Aisyah Alfandi Kibu Angio, Melisnawati H. Ani M. Hasan Ani M. Hasan Aryati Abdul Aryati Abdul Aryati Abdul Asep S. Abdurrahmat Asniawati Zainuddin Asniwati Zainuddin Budy Santosa Budy Santoso Chairunnisah J Lamangantjo Citra Leonita Matalauni Cono, Titi Hawanda Metania Dewi Wahyuni K. Baderan Eka Zahra Solikahan Eman Rahim Eman Rahim ENDANG S. SOETARTO febriyanti febriyanti Frida Maryati Yusuf HASAN, ANI M. Herinda Mardin Husain, Ilyas Ilyas Husain Ilyas Husain Indra Domili Irsan, Mohamad Ismail, Lilis U. Jusna Ahmad Jusran Jusran LANGKAH SEMBIRING Ledy Mutmainah Y Syahril Lilan Dama Mabuia, Siti Ainun Magfirahtul Jannah Mamu, Hartono Margaretha Solang Masra Latjompoh Mohamad Ikbal Riski Danial Muh. Nur Akbar Muhammad Isra Muhlis Muhlis Mustaqimah, Nur Noer Fahnessa Dako Nona Wingti Posangi Novian Swasono Hadi Novri Youla Kandowangko Nur Afni Machmud Nur'ain Marton Angio Nurdin Nurfadhlia Djafar Nurhayati Bialangi Nurinda Umadji Pangalo, Paulus Pobela, Juliani Putri, Tarissa Eka Ramli Utina Riskanarti K. Lihaawa Risnayanti R Juramang Rulan U. Mustapa Sela Restia Tangahu Siti Humairah Eka Putri SORAYA FITRIA NASIR Sri Delviyanti Lihawa Sukarti Moeljopawiro Sukirman Rahim Syam S. Kumaji Syapril, Syapril Tadidik, Ulfaida H. Timumun, Radina I. Tjut S. Djohan Torana, Melanie Triska Wahyuni Dawit Uno, Wirnangsi D. Vivien Novariana Widya Rahmawaty Saman Wirnangsi D Uno Wirnangsi D Uno Wirnangsi D. Uno Wirnangsi D.Uno Wirnangsi Din Uno Wirnangsih D. Uno Yulianti Humokor