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All Journal AL KAUNIYAH Biogenesis: Jurnal Ilmiah Biologi BERITA BIOLOGI Kultivasi Jurnal Sains Teh dan Kina Jurnal Agrotropika Makara Journal of Science
DWI NINGSIH SUSILOWATI
Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumberdaya Genetik Pertanian, Jl. Tentara Pelajar 3A, Bogor 16111
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Microbial phosphate solubilization mechanisms in P solubilizing in andisol Marpaung, Agustina Erlinda; Sabrina, Tengku; Rauf, Abdul; Susilowati, Dwi Ningsih; Siregar, Luthfi Aziz Mahmud
Kultivasi Vol 23, No 2 (2024): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v23i2.52749

Abstract

Phosphate (P) nutrient plays a significant role in plant growth and yield. P is an essential element that plays an important role in photosynthesis and root development. Phosphate nutrient availability is deficient in some soil types due to retention, such as in Andisol soil types. High phosphate retention in Andisol soil types causes P nutrients to be unavailable to plants and can reduce crop yields. The availability of P in Andisol soils can be done, among others, by applying phosphate solubilizing microbes. Phosphate solubilizing microorganisms are soil microorganisms consisting of bacteria and fungi that can mineralize organic P, dissolve inorganic P minerals, and store large amounts of P to make it available to plants. This literature review aims to determine the mechanism of phosphate-solubilizing microbes in P dissolution in Andisol soil. The methods used in this systematic review are collecting data through the internet and utilizing recognized sources such as Science Direct, Research Gate, Google Scholar, and Web of Science. Content analysis was performed on the collected data, and the results were organized into thematic categories. Furthermore, the findings are presented descriptively with the help of tables to facilitate understanding. Since phosphate-solubilizing microorganisms can dissolve P in the soil through chemical and biological mechanisms, it can be concluded that phosphate-solubilizing microorganisms also have an important role in the soil P cycle. The implications of this literature review are to understand the retention of P nutrients in Andisols and how the dissolution mechanism works, as well as the use of microbes as a solution to increase phosphate dissolution so that it is available to plants.
In Vivo Testing of Pseudozyma hubeiensis to Control Aspergillus flavus in Nutmeg Seeds (Myristica fragrans Houtt.) Rahayuningsih, Sri; Hidayah, Mudrikah Nurul; Susilowati, Dwi Ningsih; Supriadi; Suryadi, Yadi; Rismayani; Radiastuti, Nani
Al-Kauniyah: Jurnal Biologi Vol. 19 No. 1 (2026): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v19i1.46462

Abstract

Nutmeg (Myristica fragrans Houtt.) is a high-value spice commodity from Indonesia, often contamination with aflatoxin-producing Aspergillus flavus. Previous research has identified two epiphytic yeast isolates from nutmeg plants, namely DP1341a and DP1342, both of which were identified as Pseudozyma hubeiensis and showed antagonistic potential against A. flavus. This study is a follow- up study that aims to test the antagonistic activity of both isolates against A. flavus in vivo on nutmeg seeds. The research was conducted experimentally through several stages, namely testing the compatibility of isolates on Yeast Malt Agar (YMA) media, determining the optimum fermentation time, and applying liquid culture and fermentation filtrate to 120 nutmeg seeds. Results showed that the consortium of isolates DP1341a and DP1342 did not increase the inhibitory power results compared to single cultures with optimum fermentation times of 10 and 14 days, respectively. In vivo applications show that treatment with DP1342 isolate (KC-DP1342) and consortium in liquid culture provides the highest level of resistance to A. flavus infection, namely 38.67% and 28.00%. The findings suggest that P. hubeiensis DP1342 has potential as a biological control agent in controlling A. flavus on nutmeg seeds, although further formulation and optimization are needed.
Effects of phosphate-solubilizing fungi on phosphorus availability, retention, and soil chemical properties in shallot cultivated on andisols of North Sumatra Marpaung, Agustina Erlinda; Sabrina, Tengku; Rauf, Abdul; Susilowati, Dwi Ningsih
Kultivasi Vol 25, No 1 (2026)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v25i1.68191

Abstract

The availability of phosphorus (P) is one of the main limiting factors for plant productivity in Andisol soils due to the strong fixation of P by allophane clay minerals, aluminum and iron oxides. Giving the phosphate solubilizing fungi (PSF) is an alternative to increase available P which plants can use to increase the yield. This study aimed to evaluate the effectiveness of phosphate-solubilizing fungi (PSF) in improving P availability on Andisol. The experiment used a block randomized design (BRD) with three replications. The first factor is Andisol soil origin (Soil 1 and Soil 2) and the second is isolate of phosphate solubilizing fungi (Aspergillus niger P13, A. niger P21, A. pseudodeflectus BJ21, and A. niger BJ23). The research results showed that Soil 1 generally produces higher growth and yield of shallots than soil 2. A. pseudodeflectus BJ21 can increase available P by 48.46% and A. niger P13 by 45.71% compared to without phosphate solubilizing fungi. A. niger P13 can reduce P retention by 18.48% compared to without phosphate solubilizing fungi. A. niger BJ23 can increase plant P uptake by 35.35% compared to without phosphate solubilizing fungi. Inoculation of isolates A. niger P13 and A. pseudodeflectus BJ21 was able to adapt and grow well on Andisol soil which significantly increased the population compared to the control. Indigenous phosphate-solubilizing fungi (A. niger and A. pseudodeflectus) improved P availability and uptake in Andisol, reduced P retention, adapted well to the soil environment, and showed strong potential as environmentally friendly biofertilizers based on local resources.
Co-Authors Abdul Rauf Eko Pranoto Ernin Hidayat, Ernin Fani Fauziah, Fani Fathin, Muhammad Faris Fatimah Hidayah, Mudrikah Nurul I Made Samudera, I Made I Made Samudra Ifa Manzila Kosasih, Jajang LAKSMI AMBARSARI Luthfi Aziz Mahmud Siregar Mamik Setyowati, Mamik Marpaung, Agustina Erlinda Mieke Rochimi Setiawati Nani Radiastuti Nirmalasari, Cyntia Nurwijayanti PUJI LESTARI Rahayu, Rizkiyah Putri Rismayani Sri Rahayuningsih Supriadi Suryani Suryani Tengku Sabrina Tentrem, Titi Tri Puji Priyatno Trini Suryani Kadir Wartono Wartono Yadi Suryadi Yati Rachmiati, Yati