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INDONESIA
HAYATI Journal of Biosciences
Published by Institut Pertanian Bogor
ISSN : 19783019     EISSN : 20864094     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences
HAYATI Journal of Biosciences (HAYATI J Biosci) publishes articles and short communication in tropical bioscience fields such as development, biotechnology, biodiversity and environmental issues. HAYATI J Biosci covers wide range of all life forms topics including virus, microbes, fungi, plants, animal and human. HAYATI J Biosci has been also indexed/registered in Crossref, DOAJ, CABI, EBSCO, Agricola and ProQuest.
Arjuna Subject : -
Articles 1,077 Documents
 102   103   104   105   106 
Comparative Study of DNA Barcoding and Mini-Barcoding based on COI Gene for Species Identification and Phylogeny of Formicidae Family (Insecta: Hymenoptera) Kolondam, Beivy Jonathan; Tallei, Trina Ekawati; Koneri, Roni; Mamahit, Juliet Merry Eva
HAYATI Journal of Biosciences Vol. 32 No. 6 (2025): November 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.6.1626-1642

Abstract

DNA barcoding and mini-barcoding are widely used to study insect biodiversity, including ants (Hymenoptera: Formicidae). This study evaluated the effectiveness of both approaches for species identification and phylogenetic inference in ants, with particular attention to the performance of universal primers during PCR amplification. Full-length DNA barcode (658 bp) and mini-barcode (127 bp) regions of the mitochondrial cytochrome c oxidase subunit I (COI) gene were retrieved from GenBank, aligned, and analysed with maximum-likelihood phylogenetics (1,000 bootstrap replicates) under the Tamura-Nei model. The universal DNA barcoding primers (Folmer's LCO1490 and HCO2198) showed generally good alignment with ant COI sequences. However, multiple nucleotide mismatches were observed in LCO1490, including one critical mismatch located within the GC clamp region. In contrast, the universal mini-barcoding primers (UniMinibarF1 and UniMinibarR1) showed critical mismatches at their 3′ ends, likely reducing PCR efficiency. Despite limitations associated with primer mismatches, both DNA barcoding and mini-barcoding are reliable for species identification. DNA barcoding and mini barcoding are both capable of distinguishing ants at the species level, regardless of the length of the sequences being compared. The same sequences have also been used for phylogenetic analysis, showing good ability to distinguish ant species based on phylogenetic tree reconstruction. The comparison of DNA barcoding and mini-barcoding in ants showed that longer sequences offered superior resolution for species identification and phylogenetic reconstruction. These findings underscore the need for primer optimisation in ant-specific applications and highlight the utility of both barcoding strategies for taxonomic and evolutionary studies.
Bioprospecting Bacteriocinogenic Lactic Acid Bacteria from Algerian Raw Goat Milk and Traditional Cheeses Boutaleb , Naima; Mechai, Abdelbasset; Arhab, Rabah; Debabza, Manel
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.16-27

Abstract

Artisanal fermented dairy preparation represents one of the oldest and most prevalent methods of food preservation, having enabled rational management of valuable food resources for millennia across various cultures worldwide, particularly those of the southern Mediterranean countries. Bacteriocinogenic lactic acid bacteria (LAB) that are contained in traditional fermented milk are considered good sources of promising antimicrobial bioactive compounds. A total of 58 LAB were isolated and identified based on phenotypic characteristics and then tested for their antibacterial effectiveness against both Gram-positive and Gram-negative bacteria that cause food spoilage. Eight strains among selected LAB produce bacteriocin-like inhibitory substances (BLIS), which have a broad antibacterial spectrum against tested species. The strains were identified by 16S rRNA gene sequence analysis. All generated BLISs were fully inactivated by proteolytic enzymes while remaining unaffected by catalase, indicating their proteinaceous nature. The BLIS produced by Lactiplantibacillus plantarum NBC101174 was concentrated by the addition of ammonium sulfate to a final concentration of 80%, which allowed for an increase in the specific activity of the bacteriocin from 21.05 to 106.00 AU/mg, increasing the specific factor of 5.04 fold. The inhibitory substance produced by Lpb. plantarum NBC101174 exhibits a bactericidal effect, leading to cell lysis and a 99.9% lethality rate against the indicator strain. The findings of the current study could increase our understanding of bacteriocinogenic LAB diversity. It could also be concluded that LAB isolated from Algerian fermented milk provides a promising source for bacteriocins that can be used safely as bio-preservation of various foods produced under different storage conditions.
Eugenol Exhibits Antimutagenic Activity in Model Yeast Schizosaccharomyces pombe by Regulating DNA Damage Repair System: A Transcriptomic Analysis Muhammad Zulfiqri, Aldy; Astuti, Rika Indri; Prastya, Muhammad Eka
HAYATI Journal of Biosciences Vol. 32 No. 6 (2025): November 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.6.1538-1550

Abstract

Free radicals that accumulate in cells can cause oxidative imbalance and trigger oxidative stress at the cellular level. Such conditions lead to damage to genetic material that accelerates cellular aging. Plant secondary metabolites have been reported to exhibit antioxidant activities that have the potential to overcome oxidative stress. Eugenol, derived from cloves (Syzygium aromaticum), has been shown to possess antioxidant activity in vitro. However, there is no information on the antioxidative activity of eugenol at the cellular level. Our study focused on the effect of eugenol as an antigenotoxic agent in preventing DNA damage caused by oxidative stress treatment. Further analysis on the cellular levels of eugenol was done through a transcriptomics study in the model yeast Schizosaccharomyces pombe. Treatment with eugenol may increase the cell viability of yeast exposed to mutagenic UV and EMS, suggesting that eugenol can act as an antigenotoxic agent. Indeed, eugenol treatment can repair DNA damage as indicated by the DNA nicking assay. Eugenol showed potential as an antiaging agent by regulating the cell cycle of S. pombe, specifically by slowing down at the G1 phase and progressing towards the S phase. Transcriptomics analysis revealed that eugenol treatment can regulate genes related to DNA damage response, specifically mismatch repair, base excision repair, and Nucleotide excision repair, in the yeast S. pombe. Our data suggest that eugenol has the potential to regulate the oxidative stress-induced DNA damage response in yeast S. pombe, which supports cell longevity.
New Distribution Record of Tetrigona apicalis (Smith, 1857)  (Hymenoptera: Apidae: Meliponini) in Ujung Kulon National Park, Indonesia Miharja, Jajang; Atmowidi, Tri; Priawandiputra, Windra; Perwitasari, Dyah; Kahono, Sih
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.1-7

Abstract

Ujung Kulon National Park (UKNP) is located in the western part of Java Island, Indonesia. This national park was designated a Natural World Heritage Site by UNESCO in 1992. The stingless bee species, Tetrigona apicalis (Apidae: Meliponini), has not previously been documented in specific locations on Java Island. In this study, we found a new distribution record of T. apicalis in UKNP. Here, we described of its nest-entrance characteristics, morphological features, and morphometry. The colony of bee species was found in the forest of Mount Honje, UKNP, Indonesia, at an altitude of 883 m asl. The nest is located in a Tiliaceae tree cavity at a height of 420 cm from the ground surface. The shape of the nest entrance of the bee species was irregular, with a longitudinal diameter of 3.2 cm and a vertical diameter of 5.7 cm, and it had a light brown color. Locally, this bee is known as teuwel meunyan, referring to a traditional incense burner due to the aromatic scent associated with its use in religious rituals. The findings contribute to the current knowledge of the distribution of T. apicalis on Java Island, particularly within UKNP, and provide data for future conservation and sustainable utilization efforts.
Cadmium (Cd) Contamination Status in Cisanti Lake (West Java, Indonesia) Analysis on Water, Sediment, and Bioaccumulation in Invasive Mussels Sinanodonta pacifica (Heude, 1878) Manuel, David Reivaldo; Sahidin, Asep; Hasan, Zahidah; Herawati, Heti; Baihaqi, Faqih; Arief, Mochamad Candra Wirawan
HAYATI Journal of Biosciences Vol. 32 No. 6 (2025): November 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.6.1476-1484

Abstract

Cisanti Lake, the strategic zero point of the Citarum River, faces the threat of cadmium (Cd) pollution from surrounding agricultural activities. Conducted during the dry season of 2024, this pioneering study assesses the Cd pollution status using a multicompartment approach (water, sediment, and bioindicator organism Sinanodonta pacifica, Heude 1878). Samples from the three stations were analyzed using Atomic Absorption Spectrophotometry (AAS). The concentration of Cd in water was very low (0.0012–0.0030 mg/L), but it accumulated significantly in sediment (0.37–0.65 mg/kg) and mussel tissue (0.20–0.30 mg/kg). Although the concentration in water and biota was below quality standards, ecological risk analysis revealed that the sediment has moderate contamination (Contamination Factor: 1.25–2.15) and acts as a long-term pollutant sink. S. pacifica proved effective in accumulating Cd from the water column, demonstrated by a high Bioconcentration Factor from water to biota (BCF b-w >75), making it a reliable bioindicator of Cd pollution. This study provides crucial baseline data on environmental management in the upstream Citarum and establishes sediment monitoring as a vital early warning tool for future pollution risks.
Mitigating the Inhibitory Effect of Tannins on β-Glucosidase Activity Using Tannase from Lactiplantibacillus plantarum Godse, Ravish; Vaidya, Isha; Sharma, Sharoni; Kulkarni, Ram
HAYATI Journal of Biosciences Vol. 32 No. 6 (2025): November 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.6.1592-1596

Abstract

Tannins are a diverse group of plant-derived polyphenols with a hallmark property to bind to various biomolecules. Their binding with enzymes in specific ways leads to the loss of their enzymatic potential. A similar phenomenon is postulated in the case of tannins from fruits inhibiting the β-glucosidase activity, causing lesser hydrolysis of glycosidically bound volatiles in fruit juices. We first demonstrated that tannins, viz. tannic acid and epigallocatechin gallate, significantly inhibited β-glucosidase activity. Next, the cell-free supernatant (CFS) of Lactiplantibacillus plantarum, which is known to have tannase activity, was found to de-repress β-glucosidase inhibition caused by tannins. Our results indicate that tannase, along with β-glucosidase, can be a useful strategy for hydrolysing glycosidic phytochemicals for the release of bioactive chemicals.
Coat Color Variation and Hair Color Banding in the Papuan Bandicoot (Echymipera kalubu, Marsupialia: Peramelidae) Maker, Ursula Paulawati; Suryobroto, Bambang; Atmowidi, Tri; Imai, Hiroo; Widayati, Kanthi Arum
HAYATI Journal of Biosciences Vol. 32 No. 6 (2025): November 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.6.1608-1625

Abstract

Coat color in mammals plays important adaptive roles, including camouflage, communication, and thermoregulation. Intraspecific variation in coat color is often associated with local environmental conditions. This study investigates coat color and hair color banding in the common spiny bandicoot (Echymipera kalubu), which exhibits ventral color polymorphism. We examined twenty individuals from Manokwari, West Papua, categorizing them into red-ventral and white-ventral groups. Coat color was quantified from digital photographs using CIE Lab* values, and hair color banding types were analyzed microscopically from body areas: dorsal, lateral, and ventral. Significant differences were found between the two groups and among the body areas. Red-ventral individuals exhibited higher a (redness) and b (yellowness) values, especially in the ventral area, whereas white-ventral individuals showed higher L (Lightness) values and reduced chromaticity. Seven hair color banding types were identified, with red-ventral individuals displaying a more diverse hair color banding type across body areas, particularly in lateral and ventral areas. Habitat substrate color analysis revealed that red-ventral individuals inhabited darker, red-yellow environments, whereas white-ventral individuals occupied lighter, less saturated habitats. The dorsal-to-ventral gradient in pigmentation and banding in E. kalubu is predicted to have a countershading function to avoid predators.
Enhancement of α-Glucosidase Inhibitory Activity, Antioxidant Activity, and Antioxidant Compounds in Mulberry Leaves Under Salinity Stress Wulandari, Yasinta Ratna Esti; Sulistyaningsih, Yohana Caecilia; Suprayogi, Agik; Rahminiwati, Min; Triadiati, Triadiati
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.87-94

Abstract

Salinity stress disrupts redox homeostasis in plants, leading to notable changes in the levels of bioactive compounds. These compounds are recognized for their significant role in inhibiting the α-glucosidase enzyme, which is relevant in glycemic control. Detailed insights into how salinity stress modulates α-glucosidase inhibition in mulberry leaves remain scarce. This study aims to investigate the effects of salinity stress on α-glucosidase inhibitory activity in mulberry leaf extracts, and to identify accessions exhibiting the most potent inhibitory properties. In vitro assays were employed to conduct qualitative phytochemical analyses and to quantify total phenolic content, total flavonoid content, and α-glucosidase enzyme activity. The results demonstrate that high salinity stress enhances the inhibitory activity of mulberry leaf extracts against the α-glucosidase enzyme. Notably, the MB2-3 sample exhibited the most favorable IC50 value (0.59 µg/mL), coupled with a substantial phenolic content (141.9 mg GAE/g extract) and the highest content of flavonoid observed among all tested samples (619.56 mg QE/g extract). Collectively, these findings highlight the capacity of salinity stress to augment both the inhibitory potential of mulberry extracts against α-glucosidase and the accumulation of phenolic and flavonoid compounds, with sample MB2-3 displaying auspicious attributes.
The Effect of Tides on Plankton Communities in the Belawan River Estuary, North Sumatra Leidonald, Rusdi; Muhtadi, Ahmad; Harahap, Cici Maulidiah; Mukra, Rizal; Ishak, Mohd Yusoff; Hasani, Qadar
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.114-128

Abstract

The Belawan Estuary is a highly important economic and logistics hub in Sumatra, serving as the primary maritime transportation route in western Indonesia. This estuary is also utilized for multiple purposes, including industrial activity, residential areas, and fisheries. These activities inevitably influence water quality, which in turn affects the presence and population dynamics of plankton in the estuary. This study aimed to examine the spatial and temporal distribution of plankton communities in the Belawan Estuary. Observation points were selected from eight locations representing different activities and regions, including areas near the sea, the middle section, and areas close to land. Plankton samples were collected during high and low tides following the tidal cycle (new moon, first quarter, full moon, and last quarter). Principal component analysis was performed to determine the influence of tidal cycles on plankton composition and abundance in the estuary. A total of 64 plankton genera from 16 classes were identified in the estuary. spatially, the highest abundance was recorded in the mouth estuary during low tide. Temporally, the highest plankton abundance across stations was during the first quarter phase at low tide. These findings indicate that tidal cycles significantly influence plankton abundance in the Belawan Estuary. This phenomenon is attributed to the tidal currents that transport nutrients from the lower layers to the surface waters during both high and low tides. Changes in plankton abundance and species composition can serve as indicators of water fertility in this region and reflect the impacts of changes in environmental conditions.
Isolation, Identification, Antimicrobial Activities, and Application of the Crude Pigmented Extract of Soil Actinobacteria in Handicraft and Painting Urtgam, Sittichai; Puengtang, Chaowalit; Nakthong, Muthita; Sa-ngat, Pijittra; Sirisan , Prattana; Sumpradit , Tawatchai; Thurnkul , Naruemol
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.129-141

Abstract

A total of 21 actinobacterial strains were isolated from soils in Thailand. The selected strains were applied for pigment extraction before handicraft and painting application. Based on the color tones, 4 actinobacterial strains, namely B3 (yellow), B8 (violet), F4 (brown), and F9 (pink), were selected. Their antimicrobial activities against pathogenic bacteria and molds, including Escherichia coli PSRU-01, Staphylococcus aureus PSRU-01, Colletotrichum sp. NPJM -01, and Fusarium sp. PSRU-01 were tested using the agar well and the poisoned food techniques. Phylogenetic identification was analyzed on the basis of partial 16S rDNA sequence comparison for species delineation. They closed Streptomyces tendae 99.73% (B3), Streptomyces muensis 99.52% (B8), Streptomyces ardesiacus 99.38% (F4), and Streptomyces iakyrus 99.59% (F9). These strains were evaluated for their potential as colorants in handicraft clay and painting colors. Streptomyces pigment may be a naturally produced and eco-friendly alternative for handicraft and painting applications.

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