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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 2,520 Documents
 168   169   170   171   172 
Analysis of Infiltration Rate in Community Forest Land (HKm) Wombo Rengge Kala, Dompu District, West Nusa Tenggara Nurwahdania, Nurwahdania; Ichsan, Andi Chairil; Wulandari, Febriana Tri
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8442

Abstract

The amount of water that enters the soil per unit of time is known as the infiltration rate, whereas infiltration itself is the process by which water flows into the soil, typically via rainfall. The purpose of this study was to determine the infiltration rate and the impact of infiltration and to formulate community efforts to control infiltration in the Ampang Riwo community forest. Determination of the research sampling point using purposive sampling. This study used 4 infiltration rate test points and 4 samples were taken for soil samples, namely Vegetation is not dense, very steep land (V1L1), Vegetation is not dense, rather steep land (V1L2), Vegetation is dense, very steep land (V2L1), and Vegetation is dense, rather steep land (V2L2). Measurements were taken using a double ring infiltrometer. The results of the study showed that there were 3 plots that had a fairly fast classification but had different infiltration rate values. The first plot V1L1 which had an infiltration rate value of 150 cm/hour, the second plot V2L1 had an infiltration rate value of 108 cm/hour, In the third plot V2L2 had an infiltration rate value of 186 cm/hour, in the plot V1L2 had a fast infiltration classification, an infiltration rate value of 204 cm/hour. This study there were 12 respondents, namely farmers who had cultivated land. The characteristics of the respondents included age and education level. Based on the results of the study, the perception of cultivators regarding the infiltration rate was obtained with a total of 13 respondents for 10 questions, on average answering strongly agree and agree. For strongly agree 30.77% and 69.23% agreed.
Identification of Antibiotic-Resistant Gram Positive Bacteria from Broiler Caecum in The Slaughterhouse of Mataram City Rizqullah, Rifqi; Wardoyo, Eustachius Hagni; Rahim, Adelia Riezka; Rosyunita, Rosyunita; Hasbi, Nurmi; Indratama, I Nyoman Yudayana
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8466

Abstract

The subtherapeutic use of antibiotics as Antimicrobial Growth Promoters (AGPs) in broilers has accelerated Antimicrobial Drug Resistance (AMR) in gut microbiota, posing a global threat. This study aimed to analyze the population, morphology, catalase test results, and antibiotic sensitivity of erythromycin and vancomycin to cefotaxime-resistant Gram-positive bacteria in the caecum of broilers from Mataram City slaughterhouses. Using exploratory descriptive method, five caecum samples were analyzed by Total Plate Count (TPC) on Man Rogosa Sharpe Agar (MRSA) media with and without cefotaxime, and incubated on Mannitol Salt Agar (MSA). Results revealed uniform bacterial morphology on MRSA (small, round, convex, entire edge, white, Gram-positive colonies) but varied morphologies on MSA. Catalase tests were negative on MRSA but mixed on MSA. Resistance to erythromycin and vancomycin was 80% on MRSA, while on MSA, erythromycin resistance reached 62.5% with variable vancomycin inhibition zones. The prevalence of cefotaxime-resistant bacteria was 5.24%. This study highlights diverse morphological, catalase, and antibiotic sensitivity profiles in cefotaxime-resistant bacteria, particularly on MSA. These findings underscore the need for stricter antibiotic use regulations and further research to mitigate AMR spread in poultry production.
Molecular Mechanism of Trichoderma harzianum Secondary Metabolites in Inhibiting Cellulase Protein of Colletotrichum capsici Benatar, Gilang Vaza; Nurhayati, Yeyet; Ridwan, Nur Fathurahman; Aisyah, Aisyah
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8475

Abstract

Fungal diseases in agriculture pose significant challenges to food security, necessitating sustainable biocontrol solutions. Trichoderma harzianum, a biocontrol agent, exhibits potent antifungal properties through its secondary metabolites. This study investigates the inhibitory mechanism of T. harzianum metabolites on the cellulase protein of Colletotrichum capsici, the causative agent of chili anthracnose, using molecular docking and dynamics simulations. The cellulase protein, crucial for plant cell wall degradation, was modeled through homology techniques, and its interactions with T, harzianum metabolites—cyanuric chloride, palmitinic acid, and massoia lactone—were analyzed. Massoia lactone demonstrated the highest inhibitory potential, with stable binding interactions confirmed through molecular dynamics. These findings provide insights into developing environmentally sustainable antifungal strategies. Further research is recommended to optimize the application of T. harzianum metabolites as biopesticides.
The Effect of Zeolite Addition in Growing Media on The Growth and Yield of Green Mustard (Brassica Juncea L.) Azzahra, Annisa Ayu; Asnur, Paranita; Istiqlal, Muhammad Ridha Alfarabi; Malasari, Silvina
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8476

Abstract

Zeolite is a mineral widely used in agriculture due to its properties as an adsorbent, molecular sieve, and ion exchanger, as well as its high cation exchange capacity and selectivity. This study aims to analyze the effects of different zeolite application levels in the growing medium on the growth and yield of green mustard (Brassica juncea L.). The research was conducted in the smart agricultural sector of Gunadarma University Technopark from March to June 2024. A Randomized Complete Block Design (RCBD) with a non-factorial approach was employed, utilizing a single indicator plant—green mustard. The planting media consisted of soil, chicken manure, and cocopeat in a 1:1:1 ratio as the control. Zeolite was incorporated at three different levels: 40%, 45%, and 50%. Each treatment included ten repetitions with six samples, resulting in a total of 240 experimental units. The findings indicate that the optimal zeolite application level for green mustard growth is 45%, producing a plant yield of 17.75 tons per hectare. This represents a 5% improvement in efficiency compared to previous studies, which suggested that 50% zeolite was optimal. Additionally, the 45% zeolite treatment demonstrated a significant yield increase compared to the control treatment, which produced only 8.32 tons per hectare. These results highlight the potential of zeolite to enhance soil fertility and improve crop productivity.
Literature Review: The Effect of Butterfly Pea Flower Kombucha Fermentation as Antibacterial Agent Hijriadina, Zerati; Shiddiqi, Buchary Rahman Ash; Amanda, Raina Julia; Wandila, Welsi; Putranto, Diouf Maulana Dwi; Rismiyati, Rismiyati; Listyacahyani, Anggit
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8480

Abstract

Biotechnology involves the use of microorganisms supported by technology to produce goods and services, a practice that has been around for thousands of years. The application of biotechnology includes processing fermented beverage products. Kombucha is a traditional fermented tea drink that is carbonated and has a slightly sweet and sour taste. Butterfly pea flower contains anthocyanins, which act as antioxidants and antibacterial agents. Sugar serves as a nutrient for Scoby, helping with the fermentation process. This article review uses a scientific literature study, with data collected from Google Scholar, referencing 15 journals from the last 10 years. Scoby nutrients can include granulated sugar, palm sugar, Baduy forest honey, stevia sugar, and Tropicana Slim sugar. Each nutrient is given at concentrations of 20%, 30%, and 40%. The test results show that providing nutrients at a concentration of 40% produced a larger inhibition zone.
Effect of IBA Concentration on The Growth of Ramin Cuttings (Gonystylus bancanus (Mig.) Kurz) Decenly, Decenly; Simbolon, Samuel Grenkess Glovanus; Sunariyati, Siti; Anggoro, Rahayu Opi; Guevara, Krishna Ananka Reza
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8485

Abstract

Ramin (Gonystylus bancanus (Miq) Kurz) is a peat swamp plant with commercial value in both national and international markets. However, the existence of ramin is threatened with extinction, due to the imbalance between regrowth and utilization, making it increasingly difficult to obtain ramin seedlings naturally. One of the efforts to propagate ramin is by cuttings. This study aimed to determine the optimum concentration of IBA (Indole Butyric Acid) growth regulator used in supporting the growth of ramin cuttings. The research method used a Randomized Group Design (RGD) consisting of 4 treatments and 6 replicates. The treatment consisted of P0 (control/0 ppm), P1 (IBA concentration 1000 ppm), and P3 (IBA concentration 1500 ppm). The data were analyzed descriptively qualitatively. The results showed that the provision of IBA affects the growth of ramin cuttings. Based on the percentage of cuttings that successfully grew, P0 successfully grew by 50%, P1 successfully grew by 83.33%, P2 successfully grew by 100% and P3 successfully grew by 100%. The average number of shoots of ramin cuttings that successfully grew in the treatment of P0 amounted to 0, P1 treatment amounted to 1, then P2 amounted to 2, and the highest number of shoots was in the treatment of P3 with 3 shoots. It can be concluded that the concentration of IBA 2000 ppm gives the best results when compared to other concentrations based on the percentage of cuttings that managed to grow and the average number of shoots.
Relationship Between Family History of Stroke, Hypertension and Smoking History with The Incidence of Ischemic Stroke in Stroke Patients Timur, Insan Rabbani; Tunjung, I Wayan; Iing, Iing; Setiarini, Rohmania
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8493

Abstract

The most prevalent kind of stroke and a major global cause of disability and death is ischemic stroke. According to data, smoking and hypertension are the main risk factors for stroke, which is very common in Indonesia, especially in Central Lombok. Numerous studies also link the likelihood of specific stroke subtypes to family history. Based on these facts, the purpose of this study is to determine and examine the association between the incidence of ischemic stroke in stroke patients at Praya Regional General Hospital, Central Lombok, and smoking, hypertension, and family history of stroke. This study employs an observational analytic approach with a cross-sectional research design. The sampling technique used is purposive sampling. Data were analysed using the Chi-Square test with a significance level of p < 0.05 and multiple logistic regression analysis. Of the 108 respondents, univariate analysis showed that 28.7% had a family history of stroke, 74.1% had hypertension, and 50.9% had a history of smoking. Bivariate analysis revealed no significant association between family history of stroke and ischemic stroke (p = 0.301). In contrast, hypertension (p = 0.007) and smoking history (p = 0.016) demonstrated significant associations. Multivariate analysis indicated that hypertension increased the likelihood of ischemic stroke by four times (Exp(B) = 4.074; p = 0.004), while smoking history elevated the risk by 3.3 times (Exp(B) = 3.364; p = 0.009). The conclusion is that hypertension and smoking history have a significant relationship with ischemic stroke, increasing the risk by 3.9 times and 3.2 times respectively, while family history of stroke does not show a significant relationship.
Diversity of Bryophytes Based on Substrate Types in the Karangkamulyan Tourist Area, Ciamis Regency Wahyuningsih, Endang Prayudaty; Martiwi, Ika Nugraheni Ari
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8495

Abstract

Indonesia is renowned as a megabiodiversity country with a wealth of flora, including the diversity of bryophytes. These plants play a crucial role in ecosystems, such as oxygen production, erosion control, and water absorption. This study aims to analyze the diversity of bryophytes in the Karangkamulyan Tourism Area, Ciamis Regency, and to examine their diversity based on substrate types. Karangkamulyan is a cultural and natural conservation area covering 25.5 hectares with a climate and conditions that support bryophyte growth. The research utilized an exploratory method with random sampling at three selected points within the area. Morphological and anatomical analyses were conducted to identify species, and the percentage of occurrence was analyzed based on substrate types. The results revealed the presence of 15 species belonging to 12 families of bryophytes inhabiting various substrates such as soil, rocks, and tree trunks. The identified bryophytes included 6 liverworts (Marchantiophyta): Dumortiera hirsuta, Marchantia emarginata, Riccia gangetica, Heteroscyphus argutus, Heteroscyphus coalitus, and Schiffneriolejeunea sp.; and 9 mosses (Bryophyta): Neckeropsis undulata, Thuidium plumulosum, Ectropothecium falciforme, Fissidens sp., Fissidens flaccidus, Calymperes sp., Hyophila sp., Barbula sp., and Bryum sp. Based on substrate types, 91 occurrences were recorded, consisting of 25% terrestrial bryophytes (23 occurrences), 55% epiphytic bryophytes (50 occurrences), and 20% epilithic bryophytes (18 occurrences).
Formulation and Evaluation of Facial Wash Gel Preparation from Celery Leaf Ethanol Extract (Apium graveolens L.) Against Staphylococcus aureus Bacteria Ginting, Indra; Mukhali, Hassan Basri bin; Abas, Mohd Ihsanuddin Bin; Aji, Andrey; Rachelli, Rachelli; Andry, Muhammad; Sibero, Jitasari Tarigan; Rudang, Singgar Ni
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8500

Abstract

Facial wash is a facial cleansing soap that can clean oil and cosmetics that stick to the face. Usually facial wash has a low pH or close to the skin's normal pH, namely 4.5-6.5 and contains milder detergent. Researchers are to determine which celery leaf extract (Apium graveolens L.) is being evaluated as a facial wash preparation and to determine which facial wash preparation has inhibitory power for the growth of Staphylococcus aureus bacteria. This research is experimental using the maceration method. The sample used in this research was 10 kilograms of celery leaves. Results : Testing the pH of the celery leaf ethanol extract facial wash gel preparation for each F0, F1, F2 and F3 showed that the pH of the celery leaf ethanol extract facial wash gel preparation decreased due to the presence of acid compounds in celery leaves, causing the pH to decrease slightly but still within the pH range. topical, namely 4.5-7.0 and the pH of the celery leaf ethanol extract facial wash gel preparation above shows a relatively neutral pH which is still safe for the skin. The facial wash gel preparation of ethanol extract of celery leaves (Apium graveolens L.) has an inhibitory zone containing Staphylococcus aureus bacteria in K(+), K(-), F1 (5%), F2 (10%) and F3 (15%) with strong inhibition zone category. Researchers found that the ethanol extract of celery leaves can be formulated in the form of a facial wash gel. It is recommended that further research be carried out on the effectiveness of celery leaves with different concentrations and methods.
Glyphosate Tolerant Bacteria from Rhizosphere of Kangkong (Ipomoea reptans Poir.) and Soybean (Glycine max L.) Dina, Aslikh Lana; Solihah, Jumailatus; Khusnuryani, Arifah
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8504

Abstract

The use of organophosphate pesticides has some risks for human health and environment. One of the organophosphate pesticides is glyphosate. Various methods used to detoxify organophosphates including chemical methods, incineration, and landfills, produce acid and alkaline compounds, leaching pesticides around land and groundwater areas, as well as toxic emissions to the environment. The bacteria with this ability can be isolated from areas contaminated with glyphosate. Kangkong (Ipomoea reptans) and soybean (Glycine max) were chosen because of these plants are commonly found in rice fields which are areas that are frequent exposure to pesticide. The interaction between rhizosphere bacteria and plants as well as the composition of existing bacteria are closely related to the remediation occured. Kangkong and soybeans (2 weeks) were treated with glyphosate 377 mM. Soil pH was measured in third and seventh days after treat with glyphosate. The bacteria were isolated a week after treatment with glyphosate, and cultured in NA medium containing 5 mM and 10 mM glyphosate. The growing bacteria were selected and re-cultured in NA + glyphosate 10 mM medium. The selected isolates were tested for glyphosate degradation ability in Mineral Salt Media containing glyphosate 5 mM and glucose 50 mg/L. Eight isolates of bacteria grew in media containing glyphosate, i.e. Kd1, Kd2, Kd3, Kd4, Kd5 from soybeans rhizosphere, and K1, K3, K4 from spinach rhizosphere. The isolate Kd4 and K4 grew more abundantly compared the other isolates, exhibited good tolerant of glyphosate. From glyphosate degrading test, the isolate from soybean rhizosphere showed more tolerance than the isolate from kangkong rhizosphere. The molecular identification revealed that both isolates belong to species Bacillus mycoides.

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