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All Journal Biodiversitas Journal of Biological Diversity
NI'MATUZAHROH NI'MATUZAHROH
Department of Biology, Faculty of Science and Technology, Universitas Airlangga. Jl. Dr. Ir. H. Soekarno, Surabaya 60115, East Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Isolation and potential evaluation of organophosphate-indigenous degrading fungi from Singolangu Farmland, Magetan, Indonesia PUJIATI PUJIATI; HERTANTI HERTANTI; R. BEKTI KISWARDIANTA; FATIMAH FATIMAH; RICO RAMADHAN; NI'MATUZAHROH NI'MATUZAHROH
Biodiversitas Journal of Biological Diversity Vol. 26 No. 1 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260118

Abstract

Abstract. Pujiati, Hertanti, Kiswardianta RB, Fatimah, Ramadhan R, Ni’matuzahroh. 2025. Isolation and potential evaluation of organophosphate-indigenous degrading fungi from Singolangu Farmland, Magetan, Indonesia. Biodiversitas 26: 157-168. Pesticide use is prevalent in Indonesian agriculture, especially in vegetable farming regions like Singolangu Hamlet, Sarangan Village, Plaosan, Magetan, East Java. While pesticides effectively control pests, their overuse and misuse have caused soil contamination, health disruptions, and decreased agricultural productivity. This study examines the potential of indigenous fungi from Singolangu to remediate soil polluted by organophosphate pesticides, specifically chlorpyrifos and profenofos. Twelve indigenous mold isolates were isolated and ex-situ bioaugmentation was performed with six treatments. The levels of N, P, K, pH, and organophosphate pesticide residues were analyzed. Aspergillus flavus was the most effective in bioremediation, achieving significant results within four weeks and displaying N, P, K, pH values of 101 ppm, 99 ppm, 306 ppm, and 6, respectively. The KPSK Formula (a mixture of all Fungi KPS1 to KPS12 ) which utilized a 12-isolate consortium, also showed significant results, with N, P, K, and pH values of 57 ppm, 59 ppm, 138 ppm, and 6, respectively. The control soil had 150 ppm of chlorpyrifos and 29 ppm of profenofos left over from the pesticides, but the bioremediation treatment KPS3 lowered these levels to 97 ppm of chlorpyrifos and 5.5 ppm of profenofos. This study indicates that indigenous fungi can efficiently degrade profenofos and chlorpyrifos pesticides, either individually or in consortium.
Isolation and potential test of indigenous bacteria from Singolangu, Magetan, Indonesia for bioremediation of organophosphate compounds PUJIATI PUJIATI; YULIA WULAN PRASETYANTI; MUH. WASKITO ARDHI; FATIMAH FATIMAH; RICO RAMADHAN; NI'MATUZAHROH NI'MATUZAHROH
Biodiversitas Journal of Biological Diversity Vol. 26 No. 3 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260301

Abstract

Abstract. Pujiati, Prasetyani YW, Ardhi MW, Fatimah, Ramadhan R, Ni’matuzahroh N. 2025. Isolation and potential test of indigenous bacteria from Singolangu, Magetan, Indonesia for bioremediation of organophosphate compounds. Biodiversitas 26: 1029-1038. The objective of this study was to isolate indigenous bacteria from soil contaminated with pesticide residues and assess their potential for bioremediation of organophosphate compounds, specifically from the profenofos and chlorpyrifos groups. The methodology employed was bacterial isolation, characterization, and ex-situ bioaugmentation testing with a design that included six treatments. The parameters observed included pH, N, P, K, profenofos, and chlorpyrifos pesticide residues. By the fourth week, the bioremediation results demonstrated the exceptional effectiveness of bacteria from the Pseudomonas genus, particularly isolate B3, which outperformed other isolates in terms of N, P, and K pH values, which were 90 ppm, 94 ppm, 175 ppm, and 6, respectively. The lowest N, P, K was isolate B1, with consecutive values of 47, 63, 129, and a pH value of 6. The control soil on pesticide residue levels in the chlorpyrifos test was 150 ppm, and profenofos was 29 ppm. In the results of soil testing with Pseudomonas bacteria (isolate B3), chlorpyrifos levels were reduced by 41 ppm to 109 ppm, and profenofos levels were reduced by 21.8 ppm to 7.2 ppm. Isolate B1 was able to reduce profenofos levels by 18 ppm to 132 ppm and decrease profenofos by 9.2 ppm to 18.8 ppm. The test results showed that the type of indigenous bacteria and the length of incubation time have an impact on soil quality and pesticide residue levels.
Microbial community profiling of volcanic-affected rice soils near Mount Semeru, Lumajang, Indonesia using Next-Generation Sequencing for biofertilizer development DWI NUR RIKHMA SARI; NI'MATUZAHROH NI'MATUZAHROH; FATIMAH FATIMAH; SALAMUN SALAMUN; MOCH AFFANDI; JUNAIRIAH JUNAIRIAH
Biodiversitas Journal of Biological Diversity Vol. 26 No. 9 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260915

Abstract

Abstract. Sari DNR, Ni’matuzahroh, Fatimah, Salamun, Affandi M, Junairiah. 2025. Microbial community profiling of volcanic-affected rice soils near Mount Semeru, Lumajang, Indonesia using Next-Generation Sequencing for biofertilizer development. Biodiversitas 26: 4424-4434. This study represents the first attempt to apply Next-Generation Sequencing (NGS) based on the 16S rRNA gene to analyze the microbial community structure in paddy soil affected by the eruption of Mount Semeru in Lumajang. This study aims to profile the microbial communities of volcanic-affected rice soils near Mount Semeru. Sequencing was conducted using ONT, with Guppy and NanoFilt for bioinformatic processing. Soil chemical analysis revealed a moisture content of 1.22%, organic carbon at 0.96%, and nitrogen at 0.1%. Available phosphorus was measured at 11 ppm, with a Cation Exchange Capacity (CEC) of 6.22 cmol(+)kg?¹. The microbial community was highly diverse, encompassing 100,046 observed species, with a Shannon-Wiener diversity index of 5.528 and estimated species richness values of 2,337.51 (Chao1) and 1,242.00 (ACE). This diversity spanned 44 phyla, 109 classes, and more than 5,000 species. The dominant phylum was Pseudomonadota (46.35% of total OTUs in the sample), with major genera including Lysobacter (5.90%) and Gaiella (4.44%). Opportunistic pathogens were also detected, underscoring the need to strengthen health and safety measures in post-eruption agricultural areas. These findings provide critical insights into the resilience of microbial communities and highlight their potential application in the development of biofertilizers and environmental biotechnology in Indonesia, offering hope for the future of agriculture in volcanic-affected areas.
Co-Authors DWI NUR RIKHMA SARI FATIMAH FATIMAH HERTANTI HERTANTI JUNAIRIAH JUNAIRIAH MOCH AFFANDI MUH. WASKITO ARDHI PUJIATI PUJIATI R. BEKTI KISWARDIANTA RICO RAMADHAN SALAMUN SALAMUN YULIA WULAN PRASETYANTI