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Kota mataram,
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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,597 Documents
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Antibacterial Activity of Ethanol Extract of Red Betel Leaves (Piper crocatum) Against Propionibacterium acnes Sihombing, Angelina Victoria; Rini, Desi Indria; Woda, Rahel Rara; Amat, Anita Lidesna Shinta
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11714

Abstract

Propionibacterium acnes is a type of bacteria that typically exists on skin areas with many sebaceous glands, like the scalp and face. The exploration of natural antibacterial agents made from herbal plants is one approach to decrease resistance issues. One such plant utilized is red betel, scientifically known as Piper crocatum. The objective of this study is to assess the antibacterial properties of the ethanol extract from red betel leaves against Propionibacterium acnes. This study adopted a true experimental framework with a post-test only control group model. The red betel leaf extract was produced through maceration using a 70% ethanol solution, followed by evaporation until a concentrated extract was achieved. In this study, the treated groups included various concentrations: 100%, 50%, 25%, 12.5%, 6.25%, 3.125%, and 1.56%, alongside a positive control using clindamycin and a negative control using sterile aquades. The antibacterial testing was performed using the disc diffusion method, referred to as the Kirby-Bauer technique against Propionibacterium acnes bacteria. The analysis conducted was the One Way Anova statistical test. Findings from this study reveal that the extract of red betel leaves contains alkaloids, tannins, saponins, flavonoids, and terpenoids. The testing outcomes indicate that the average diameter of the inhibition zone resultant from each sample is 11.16 mm for the 100% concentration, 9.63 mm for the 50% concentration, 8.85 mm for the 25% concentration, 8.21 mm for the 12.5% concentration, 7.78 mm for the 6.25% concentration, 6.93 mm for the 3.125% concentration, and 0 mm for the 1.56% concentration. From the results, it can be concluded that the ethanol extract from red betel leaves exhibits antibacterial activity against the growth of Propionibacterium acnes.
The Effect of Liquid Organic Fertilizer From Tofu Waste and NPK Fertilizer on The Growth of Lettuce (Lactuca sativa L.) Rahmatia, Nurul Adani; Raksun, Ahmad; Mertha, I Gde
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11800

Abstract

Lettuce presents significant market potential, catering to both local and global demands. The strong need for this horticultural product gives it considerable economic importance, which can enhance individual earnings. This study intends to evaluate how liquid organic fertilizer made from tofu waste and NPK fertilizer influences the growth of lettuce (Lactuca sativa L.) and to assess how their combination impacts lettuce plants. An experimental method was employed, with data gathered from measuring plant growth. The application of liquid organic fertilizer derived from tofu waste alongside NPK fertilizer notably influenced the height of the plants, the quantity of leaves, the size of leaves, and both the wet and dry weights of the lettuce. In contrast, the interaction between the liquid organic fertilizer from tofu waste and NPK fertilizer did not show a significant impact on the height, number of leaves, leaf size, or the wet and dry weight of the lettuce.
Sorus Characteristics of Ferns (Pteridophyta) in Green Open Spaces at Medan State University Ritonga, Yusran E.; Hardiansyah, Dadang; Harsono, Tri
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.10895

Abstract

The green open spaces of Medan State University play a role in biodiversity and ecology. Data collection of fern (Pteridophyta) species in the sporophyte phase and characterization of their sori have not been previously reported, so scientific data collection and presentation are needed. The research method used to obtain data is exploratory. Each fern found was documented and collected for herbarium purposes and detailed sorus observation. Twelve fern species from 7 families were identified: Aspleniaceae, Athyriaceae, Davalliaceae, Nephrolepidaceae, Polypodiaceae, Pteridaceae, and Thelypteridaceae. Of the species found, it was noted that they have terrestrial, epiphytic, and terrestrial/epiphytic life forms. Each species has sori located under the leaf surface, except for Davallia denticulata (Burm.f.) Mett. which is at the leaf tip. The position of the sori is parallel to the leaf veins, between the leaf veins, on the leaf margin, and close to the leaf margin. The sori are brown, light brown, reddish brown, gray, and green. This fern has eight sori, each with an annulus. This sori characteristic differentiates and identifies the type of fern. Pteridophytes in the green open spaces of Medan State University play a role as pioneers, builders of biodiversity and ecosystems, and sources of knowledge, food, and medicine. These findings will serve as a source of scientific knowledge and a basis for characterizing sori elsewhere.
Literature Review: The Role of Ascorbic Acid as a Priming Compound in the Physiological Response of Plants to Drought Stress Nadhra, Muftia; Anggraini, Anggraini; Violita , Violita
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11463

Abstract

Drought stress is a major abiotic factor that limits plant growth and productivity by disrupting photosynthesis, water uptake, and cellular metabolism. One strategy to enhance plant tolerance to drought is seed priming using ascorbic acid (AsA), which functions as an important antioxidant in plant defense systems. This study aims to systematically review the role of AsA as a priming compound in improving plant physiological responses under drought stress. A systematic literature review was conducted following the PRISMA framework. Relevant articles were collected from Google Scholar, ScienceDirect, and MDPI databases using keywords related to drought stress, seed priming, and ascorbic acid. Selected studies were analyzed descriptively to identify patterns of plant responses. The results indicate that AsA priming enhances antioxidant enzyme activities, reduces reactive oxygen species accumulation, maintains membrane stability, and improves germination, photosynthesis, and early seedling growth across several crop species. In conclusion, AsA seed priming is an effective approach to improve plant tolerance to drought stress. Future studies are recommended to explore optimal concentrations and molecular mechanisms of AsA application in different crop species.
Effect of Moringa Oleifera Leaf Nanoparticles on IL-10 in Vivo Model of Oral Cavity Malignancy Asmaningdiah, Mariana; Andriyani, Alfia
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11489

Abstract

Interleukin-10 (IL-10) which is secreted by Th 2 cells. Interleukin- 10 is an anti-inflammatory cytokine that plays an important role in the regulation of the host immune response by inhibiting the release of pro-inflammatory mediators. Moringa leaf nanoparticles (Moringa oleifera) are products that contain various bioactive mediators that can play a role in inflammation. The aim of this study was to determine the effect of administering Moringa leaf extract nanoparticles on IL-10 levels in oral cavity cells undergoing malignant transformation. Eighteen male Wistar rats (R. novergicus) were used as animal models that underwent benzo(a)pyrene induced malignant transformation in the oral cavity. Moringa leaf extract nanoparticles with concentrations of 0.250 mg/mL, and 0.500 mg/ were given to the treatment group for 14 days. The results of IL-10 levels were evaluated using the ELISA method. Data analysis using the Kruskall-Wallis test was carried out to analyze differences between groups. Aplication Moringa oleifera leaf nanoparticles with concentrations of 0.250 mg/mL, and 0.500 mg/mL were able to reduce levels of IL-10 in oral cells undergoing malignant transformation. The results of this study showed that the p-value = 0.726 (> 0.05) which means that there was no effect of the application of moringa leaf extract nanoparticles in a mouse model with malignant transformation of oral cells on reducing IL-10 levels.
Optimization of Biochar Application for Improving Soil Water Holding Capacity Sidiq, Muhamad Fajar; Widyasaputra, Reza; Jaya, Galang Indra; Bimantio, Mohammad Prasanto; Noviyanto, Amir; Jati, Moh Galih Purnama; Prasetyo, Bintang Wahyu; Nugraha, Arief Almuqhori Eka
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11493

Abstract

Water scarcity limits soil productivity, but applying biochar can effectively enhance soil water retention in vulnerable areas. This study evaluated the effects of biochar types and application rates on the maximum moisture content of sandy soils in Gunungkidul, Indonesia. A completely randomized design was used to test rice husk and blotong biochar, alongside raw rice husk and a control, at varying application rates. Maximum soil moisture capacity was experimentally measured to determine treatment efficacy. Results indicated that biochar application significantly influenced soil moisture retention. Among the treatments, a lower application rate of rice husk biochar provided the most substantial improvement in water holding capacity compared to the control. Conversely, higher rates of biochar or the use of raw materials were less effective and, in some cases, reduced water retention. Conclusively, optimizing both the biochar feedstock and its application rate is critical; specific low-dose biochar applications can optimally enhance soil moisture retention, offering a practical strategy for sustainable agricultural management in semi-arid regions.
Seasonal Variation of Megabenthos Abundance and Spatial Distribution in the GITA NADA Marine Protected Area, Sekotong, West Lombok Siagian, Raja Aditya Sahala; Sihaloho, Relis Gabriel; Anshory, Muhammad Farhan; Aktia, M. Gilang; Anshori, Ruhul; Majerus, Kara M A
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11535

Abstract

Megabenthos are organisms that inhabit the benthic zone and live on or within the substrate, including biota that attach, crawl, or burrow, and which function as important components of benthic food webs. This study aimed to determine the distribution patterns abundance and frequency of occurrence megabenthos during the dry and wet seasons in the GITA NADA Marine Protected Area (MPA), West Lombok. Megabenthos data were collected using the belt transect method. Results showed that megabenthos abundance at all locations within the GITA NADA MPA at depths of 3–5 m was 16,59 ind/m² in the dry season and 13,83 ind/m² in the wet season, while at depths of 8–10 m abundance was 39,74 ind/m² in the dry season and 38,25 ind/m² in the wet season. Independent t-tests indicated no significant differences in megabenthos abundance between the dry and wet seasons at either depth (3–5 m and 8–10 m). Frequency of occurrence megabenthos at depths of 3–5 m ranged from very rare to moderate in both the dry and wet seasons. At depths of 8–10 m, frequency of occurrence ranged from very rare to moderate in the dry season and from very rare to absolute in the wet season. The Morisita index values for megabenthos distribution in the GITA NADA MPA ranged from −0,0005 to 0,492, indicating both uniform and clumped distribution patterns.

Page 260 of 260 | Total Record : 2597

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