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All Journal Biospecies Bioeducation Journal Pendidikan Biologi Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis JURNAL PENDIDIKAN TAMBUSAI Eksakta : Berkala Ilmiah Bidang MIPA Atrium Pendidikan Biologi Serambi Biologi Pelita Eksakta Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Sainstek : Jurnal Sains dan Teknologi Jurnal Biogenerasi Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat SIMBIOSA MASALIQ: Jurnal Pendidikan dan Sains Jurnal Serambi Biologi
Dezi Handayani
Universitas Negeri Padang
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Veterinary Other

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Test of the Ability of Fluorescent Pseudomonas to Dissolve Phosphate Norman, Mayanda; Advinda, Linda; Chatri, Moralita; Handayani, Dezi
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.11143

Abstract

Phosphate is a vital nutrient required for plants, yet its presence in the soil is frequently limited due to being held by specific ions. Microorganisms that solubilize phosphate, particularly fluorescent Pseudomonas, are considered among the most efficient agents for phosphate solubilization. This research intends to assess the capacity of six fluorescent Pseudomonas isolates derived from the rhizosphere of different plants to solubilize phosphate, and to analyze their IKF values. The research was carried out descriptively from June to August 2025 at the Plant Physiology Laboratory, Faculty of Mathematics and Natural Sciences, Padang State University. Observations were conducted by noticing the development of clear zones and determining the IKF values. The findings indicated that every isolate, specifically PfPj1, PfS36, PfLAHP2, PfCas, PfS31, and PfKd7, was capable of solubilizing phosphate. The highest IKF value was found in isolate PfKd7 (4.91), whereas the lowest was recorded for PfS36 (4.08). Variations in IKF values indicate differences in the capacity of each isolate to release organic acids, which are involved in the phosphate solubilization process. This discovery reinforces the capability of fluorescent Pseudomonas as an eco-friendly biological agent to enhance phosphorus availability.
UJI AKTIVITAS ANTIMIKROBA BAKTERI ENDOFIT PSEUDOMONAS BERFLUORESEN TERHADAP Escherichia coli, Staphylococcus aureus DAN Candida Eka Nuraini, Fauzi; Hilda Putri, Dwi; Advinda, Linda; Irdawati; Handayani, Dezi; Mardhiyah Nazri, Laila; Wulandari, Tesya; Febrianti, Liza
Jurnal Biogenerasi Vol. 11 No. 1 (2026): Volume 11, no 1, 2026, (Januari - Maret 2026)
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/biogenerasi.v11i1.7989

Abstract

Antimicrobial resistance is increasing every year. New and better antimicrobial sources are needed. One source of antimicrobials that can be explored is from endophytic bacteria. This study aims to test the ability of fluorescent Pseudomonas endophytic bacteria from the roots of plantain lemongrass in producing antimicrobial compounds. The type of research is descriptive. The antimicrobial activity of fluorescent Pseudomonas isolates was tested using the point inoculation method using test microbes E. coli, S. aureus and C. albicans. The clear zone was observed after 24 hours. The results showed that fluorescent Pseudomonas isolates were able to inhibit E. coli with a diameter of 3.9 mm found in isolate 51. S. aureus bacteria had an inhibition zone of 9.4 mm in isolate 89. Interesting results were shown by isolate 51 in inhibiting C. albicans with an inhibition zone diameter of 29.9 mm. These differences in response are thought to be related to variations in cell wall structure and the presence of an outer membrane in Gram-negative bacteria, which inhibits the penetration of active compounds. Overall, fluorescent Pseudomonas endophytic bacteria from the roots of the plantain have the potential to be developed as a source of new antifungal candidates against C. albicans, while their antibacterial activity still needs to be optimized through compound purification and further testing.
Co-Authors Achyar, Afifatul Ainul Mardiah Alfatimah Azzahra, Balkis AMERIA YUNITA Anisa Asri Anizam Zein Arjulis, Wanda Armen Armen Atifah, Yusni Az-Zahra, Fauziah Azwir Anhar Celsi Ananda Claudia Ayesha Dalilah Linda Sari Lubis, Enny Della Lestari des Dhea Delara Iryanda Dilla, Aprina Dina Sukma Dini Hari Marta Dwi Hilda Putri Eka Nuraini, Fauzi Eka Vidya Putra Elsa Sri Handayani Elsa Yuniarti Fahra, Fahra Febrianti, Liza Fevria, Resti Finti Nabila, Anggie Fransisco, Sandi Fronica, Imelda Ghean Azrin Mirza Gustina Indriati Haqil Triyatdipa Harlin, Farah Ibtisamah Heffi Alberida Helendra . Ihdina Aurora Nurul Aulia Intan Febriani IRDAWATI Irdawati Irdawati Irma Lailani Eka Putri Irma Leilani Eka Putri Irma Leilani Eka Putri Kurnia Putri Indrawan Larashinda, Mentari Linda Advinda Linda Wati Mades Fifendy Mardhiyah Nazri, Laila Meriza Fatma Miftahussa'adiah Miftahussa'adiah Moralita Chatri Mukhlis Mukhlis Nabilah, Rezi Nia Ramadhanti Norman, Mayanda Novia Daniati Novita Novenra Nur Shofiatun Nisa Nurul Rahmi Oktavianes Oktavianes Putri Rachma Auliya Putri Rahma Padilla Putri, Irma Leilani Eka Putri, Ulfa Dwi Rafiqi, Aufa Rahmawati Darussyamsu Rahmi Holinesti Rani Zahara Rara Via Jonet Relsas Yogica, Relsas Resti Yulia Ristiono Ristiono Roza Yolanda Rusendra, Nabilla Makra S. Syamsurizal Safira Nurul Fadila Samsuriani Siregar Selaras, Ganda Hijrah Silfani, Novia Silviana Okwisan Siti Nurayni Sity Sarroh Sri Suciati Ningsih Sukma Yuliana Syahrastani, Syahrastani Syiifa kamila Namidya tut anggraini Vauzia, Vauzia Violita Violita Violita Violita Windi Nopitasari Wulandari, Tesya Y Yusrizal YOLANDA, PUTRI Yulanda Saputri Yuni Ahda Yusrizal Yusrizal Yusrizal Yusrizal zultsatunni'mah zultsatunni'mah