Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology 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 Veterinary

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
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.
Characterization of Rhizobacteria Isolates From Soil and Nodules Widawati, Sri; Suliasih, Suliasih; Susilowati, Dwi Ningsih; Muramatsu, Yuki; Sudiana, I Made
BIOTROPIA Vol. 27 No. 3 (2020): BIOTROPIA Vol. 27 No. 3 December 2020
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (290.948 KB) | DOI: 10.11598/btb.0.0.0.1241

Abstract

The plant growth promoting rhizobacteria (PGPR) is a group of bacteria capable of colonizing plants roots, thereby developing a system and improving plants growth and yield. The objectives of the study is to characterize the PGPR activities of several bacterial isolates {in-vitro screening), to examine their activities in stimulating soybean growth (in-vivo screening), and to identify the bacterial species. These were isolated from nodules and soil samples collected from Mount Pancar in Bogor, West Java Province as well as from Bangkirai Hill and Wain River in East Kalimantan, Indonesia. The in-vitro PGPR activity characterization includes the N-fixing ability, ACC-deaminase, indole acetic acid (IAA) production, cellulolytic activity, P-solubilization, Phosphomonoesterase (PME-ase), and nifH-gene detection. The in-vivo PGPR activity with the greenhouse assay was conducted on soybean plant {Glycine max L.). All bacterial isolates were identified using molecular methods based on nucleotide sequence generated from 16S rRNA gene. Three isolates of soil and nodule bacteria with 7 characteristics of PGPR (N2 fixation, ACC-deaminase, cellulolytic activity, IAA production, solubilization index, P available, and PMEase activity) were successfully identified. These isolates were B045 {Klebsiella variicola InaCC B827), B116 (Klebsiella sp. InaCC B833), and B210 {Mangrovibacterplantisponsorlaa.CC B841). The greenhouse assay showed that the plant height, plant dry weight and number of flowers in soybean seedlings significantly increased with Bradyrhispbium sp. strain 4167, then with Klebsiella sp. InaCC B833 and Mangrovibacterplantisponsor InaCC B841. These bacterial isolates which were characterized and screened in-vitro for PGPR potentials and their representative isolates which were identified by 16S rRNA sequence analysis are key factors for selecting PGPR isolates to be commercialized later as bio-stimulant.
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 I Made Sudiana Ifa Manzila Kosasih, Jajang LAKSMI AMBARSARI Luthfi Aziz Mahmud Siregar Mamik Setyowati, Mamik Marpaung, Agustina Erlinda Mieke Rochimi Setiawati Muramatsu, Yuki Nani Radiastuti Nirmalasari, Cyntia PUJI LESTARI Rahayu, Rizkiyah Putri Rismayani Sri Rahayuningsih Sri Widawati Suliasih Suliasih Supriadi Suryani Suryani Tengku Sabrina Tentrem, Titi Tri Puji Priyatno Trini Suryani Kadir Wartono Wartono Yadi Suryadi Yati Rachmiati, Yati