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All Journal Jurnal Sumberdaya Hayati
Nabilla, Alnovara Yuan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Isolasi dan Karakterisasi Bakteri Rhizobium asal Bintil Akar Tanaman Kacang Tanah (Arachis hypogaea) dan Koro Rawe (Mucuna bracteata): Isolation and Characterization of Rhizobium Bacteria from Root Nodules of Peanut Plants (Arachis hypogaea) and Koro Rawe (Mucuna bracteata) Nabilla, Alnovara Yuan; Prastya, Muhammad Eka ; anggria sari, Dian; Suryanti, Erma
Jurnal Sumberdaya Hayati Vol. 10 No. 4 (2024): 2024
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.10.4.175-182

Abstract

Nitrogen (N) is naturally available in the form of N2. Nitrogen fixation can be facilitated by microbes such as Rhizobium bacteria, which can establish symbiosis with the roots of legume plants to form root nodules that perform nitrogen fixation. This study aims to determine the characteristics of Rhizobium bacteria in the root nodules of peanuts (Arachis hypogaea) and koro rawe (Mucuna bracteata). The methods used in this research include collecting root nodules, isolating Rhizobium bacteria, and identifying and characterizing these bacteria for their nitrogen fixation and phosphate solubilization capabilities. Characterization results on YEMA + Congo red media indicated that 10 out of 16 isolates from peanut root nodules and 30 out of 55 isolates from koro rawe root nodules were positive for Rhizobium bacteria. The nitrogen fixation activity test revealed that only 4 isolates from peanut root nodules and 6 from koro rawe root nodules exhibited nitrogen fixation ability in Jensen's medium. The highest phosphate solubilization index was obtained from isolate KK.5.1.1 (0.5±0.08), while the lowest was from isolate KK.5.2.2 (0.09±0.06). This research underscores the significance of Rhizobium in enhancing nitrogen availability and phosphate solubilization for legume plants.
Co-Authors anggria sari, Dian Prastya, Muhammad Eka  Suryanti, Erma