cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota mataram,
Nusa tenggara barat
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
 241   242   243   244   245 
The Impact of Environmental Stress on Plant Cell Structure and Function Astria, Astria; Yofran, Yuliani Putri; Ngama, Yulita Erlina; Bhaghi, Emaliano Jonsimus Lea; Wae, Veronika P. Sinta Mbia
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
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.v25i4b.10981

Abstract

Environmental stress is an external factor that affects the strength and function of plant cells, such as salt levels, extreme temperatures, heavy metals, and radiation. This can cause significant changes at the molecular level, including cell structure and chemical processes within plants. This article is a systematic summary of 30 scientific studies published in the last ten years, aiming to identify common patterns in how plant cells respond to non-living stressors. Studies have shown that environmental stressors can lead to the accumulation of free radicals (ROS). This can damage membranes, cause lipid oxidation, damage chloroplasts, and disrupt the activity of enzymes essential for photosynthesis and respiration. At the molecular level, adaptive responses occur by activating hormone signaling pathways, particularly abscisic acid (ABA) and ethylene. This also involves increased expression of genes related to water regulation and protection from oxidation, as well as activation of autophagy, a mechanism that destroys damaged cell parts. Changes in cellular components such as the vacuole, mitochondria, and cell wall indicate how cells work to maintain salt balance and basic body processes. This summary of various studies shows that environmental stress can cause complex problems, such as disruptions in metabolic processes, instability of internal organs, and changes in gene expression. Therefore, understanding how plant cells work and their structure is crucial for developing plant varieties that are resilient to climate change stress.
The Role of Mitochondria in Cellular Energy Production and Bioenergetic Regulation: A Qualitative Meta-Analysis Mala, Nurfadila; Mala, Benedikta Odaliva; Papa, Florentina Christiani; Hayon, Melkior Bala; Wae, Veronika P. Sinta Mbia
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
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.v25i4b.10984

Abstract

Mitochondria play a central role in cellular energy production through oxidative phosphorylation that generates ATP, while also regulating metabolism, organelle dynamics, and bioenergetic signal integration. This study aims to synthesize the role of mitochondria in cellular bioenergetics through a qualitative meta-analysis of scientific articles published between 2015 and 2025. The PRISMA approach was applied for systematic article selection, resulting in 30 relevant articles analyzed for key findings. The synthesis shows that mitochondria do not operate in isolation but form a functional network that adjusts ATP production according to the specific energy demands of the cell. Mitochondrial fusion-fission dynamics influence energy distribution efficiency, while metabolic regulation and interactions with other organelles maintain cellular energy homeostasis. Mitochondrial dysfunction is associated with neuromuscular disorders, aging, and degenerative diseases including cancer. The study concludes that mitochondria are adaptive bioenergetic centers, playing a crucial role in maintaining energy efficiency and providing a scientific basis for further research in cellular biology, biomedicine, and energy-based therapeutic applications. This synthesis expands understanding of mitochondrial bioenergetic mechanisms and their implications for health and biotechnology applications.
The Relationship Between Formula Feeding and Incidence of Diarrhea Among Infants Ages 0-6 Months at Sikumana Public Health Center, Kupang City Suban, Irenne Sovia Lestari; Amat, Anita Lidesna Shinta; Wardani, Nimas Prita Rahajeningtyas Kusuma; Woda, Rahel Rara
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
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.v25i4a.10989

Abstract

Diarrhea remains one of the leading causes of morbidity and mortality among infants in Indonesia. Formula feeding is often associated with diarrhea, especially among infants under six months of age. Based on 2024 data from the Kupang City Health Office, Sikumana Public Health Center ranked second in diarrhea cases among children under five, with 1,376 reported cases. This study employed an analytical observational design with a cross-sectional approach. The population included all infants aged 0–6 months residing in the Sikumana Public Health Center area. A total of 120 infants were selected using a consecutive sampling technique according to inclusion and exclusion criteria. Data were collected through structured questionnaires administered to parents and verified with information from the Maternal and Child Health (KIA) book. Data were analyzed using the Chi-square test with a significance level of p<0.05. Among the 120 respondents, 21 infants (17.5%) received formula, while 99 infants (82.5%) did not receive formula. A total of 45 infants (37.5%) experienced diarrhea, and 75 infants (62.5%) did not. Data analysis indicated no meaningful connection between formula feeding and the occurrence of diarrhea (p = 0.352). There was no significant association between formula feeding and the rates of diarrhea in infants aged 0–6 months at the Sikumana Public Health Center located in Kupang City.
Management of Respiratory Emergencies and Acute Respiratory Distress Syndrome (ARDS) in Emerging Infectious Diseases: A Literature Review on COVID-19 Dhevi, Ni Made Saithanya Gitanjali; Setiasari, Febi Jian; Asriantin, Isna; Nitzana, Lale Nubya; Aghni, Hasna Tazkia
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
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.v25i4a.10990

Abstract

Emerging infectious diseases, including SARS-CoV-2, have become major global health challenges with significant clinical and social impacts. One of the most frequent and fatal complications of COVID-19 is Acute Respiratory Distress Syndrome (ARDS), characterized by impaired gas exchange due to diffuse lung injury. This study is a narrative review analyzing 28 articles on the epidemiology, pathophysiology, clinical features, and management of COVID-19 related ARDS (CARDS). The findings show that CARDS presents with greater severity and higher mortality than ARDS caused by other etiologies, driven by excessive inflammatory responses, endothelial dysfunction, and microthrombosis. Clinical manifestations progress from early COVID-19 symptoms to worsening hypoxemia in accordance with the Berlin criteria. Emergency management of COVID-19 with ARDS emphasizes the ABCDE approach, stabilization of respiratory and circulatory functions, and indication-based interventions to prevent respiratory failure and improve oxygenation. This review is expected to serve as a comprehensive reference for healthcare professionals in understanding and optimizing the management of CARDS.
HER2-Positive Breast Cancer: A Literature Review Adidaifa, Muhammad Fikri
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
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.v25i4a.10991

Abstract

Breast cancer remains a malignancy with high global mortality rates. Approximately 15-20% of these cases are Human Epidermal Growth Factor Receptor 2 (HER2) positive subtype, characterized by aggressiveness, high risk of metastasis, and poor prognosis if left untreated. This literature review aims to discuss the pathophysiology, diagnostic methods, and recent advancements in the management of HER2-positive breast cancer. The study utilized a literature review method, sourcing data from PubMed, Google Scholar, and ScienceDirect databases. A total of 23 literatures published within the last 5-10 years were selected based on inclusion criteria. Overexpression of HER2 protein triggers the activation of MAPK and PI3K/AKT/mTOR signaling pathways, stimulating uncontrolled cell proliferation. Diagnosis is established via Immunohistochemistry (IHC) and confirmed by In Situ Hybridization (ISH) following ASCO/CAP 2018 guidelines. Current management shows a significant shift; neoadjuvant and first-line advanced stage therapies prioritize dual blockade (Trastuzumab and Pertuzumab). Furthermore, the new generation Antibody-Drug Conjugate (ADC), Trastuzumab Deruxtecan (T-DXd), has demonstrated superior efficacy compared to T-DM1 as a second-line therapy. Comprehensive understanding of HER2 molecular biology and advances in targeted therapy have transformed the clinical landscape, increasing survival rates and significantly improving the prognosis of HER2-positive breast cancer patients.
Antioxidant Potential of Brown Macroalgae Padina spp. and Turbinaria spp. Collected from Elak-Elak Waters, West Lombok Safitri, Dwi; Hanifa, Nisa Isneni; Larasati, Chandrika Eka
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
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.v26i1.10993

Abstract

Algae are autotrophic organisms rich in bioactive compounds, including antioxidants. Macroalgae are classified into three main groups, namely brown, red, and green algae, each possessing different pigments that influence their antioxidant activity. Previous studies have shown that brown algae such as Padina spp. and Turbinaria spp. have strong antioxidant potential. At Elak-Elak Beach, Padina spp. is found abundantly, whereas Turbinaria spp. is relatively less common, and both remain underutilized. Environmental conditions in this area are presumed to influence the phytochemical content and antioxidant activity of these algae. Therefore, this study aims to identify phytochemical compounds and evaluate the antioxidant activity of Padina spp. and Turbinaria spp. as a basis for developing sustainable algae-based products. Samples were collected during low tide, prepared as simplisia, and extracted using the ultrasonication method with 96% ethanol. Phytochemical screening was conducted using tube tests, while antioxidant activity was assessed using the DPPH method with ascorbic acid as a standard. The phytochemical test showed that both extracts were positive for flavonoids but negative for phenolics. The IC₅₀ values obtained were 3.14 ± 0.007 ppm for ascorbic acid (a very strong category), 222.27 ± 0.84 ppm for Padina spp. extract (a moderate category), and 871.84 ± 5.59 ppm for Turbinaria spp. extract (inactive category). The Kruskal–Wallis analysis indicated significant differences among groups (p = 0.027), whereas the Mann–Whitney test showed no significant difference between the IC₅₀ values of Padina spp. and Turbinaria spp. Overall, Padina spp. exhibits higher antioxidant activity and shows potential as a natural antioxidant source, while Turbinaria spp. demonstrates no antioxidant activity despite containing flavonoids.
Effectiveness of Rehabilitation of Kelep River Watershed in West Lombok Regency Soumena, Welmy; Sjah, Taslim; Budastra, I Ketut
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.v26i1.10994

Abstract

This study aims to evaluate the effectiveness of Kelep River Watershed (DAS) rehabilitation based on biophysical indicators, including changes in vegetation cover, growth success rate, and erosion dynamics. The research approach used a mixed methods with a Before After Control Impact (BACI) design. Quantitative data were analyzed using NDVI values, the USLE erosion model, and the R/C ratio, while qualitative data were obtained through interviews and focus group discussions (FGDs). The results showed an increase in vegetation cover, indicated by an increase in NDVI values of 0.12–0.25, which contributed to a 57% reduction in erosion rates in the upstream area. Increased soil organic matter content increased infiltration and supported agroforestry productivity. Economically, the R/C ratio reached 1.67, indicating the financial viability of post-rehabilitation agriculture. Watershed rehabilitation needs to be strengthened through soil and water conservation in erosion-prone zones, regular NDVI-based monitoring, the development of multi-strata agroforestry conservation agribusiness with economic incentives, and strengthening the role of local institutions through technical support, access to capital, and monitoring of IPPKH compliance.
Phytochemical Screening of Methanol Extract of Neem (Azadirachta indica) Leaves Bahri, Syamsul; Hijriani, Baiq Isti; Widullutfi, Widullutfi
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
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.v25i4.10998

Abstract

Neem (Azadirachta indica) is a highly respected medicinal plant and has been used in traditional medicine for centuries. The use of plants as medicine is important to know the secondary metabolite content in the plant. Phytochemical screening is a qualitative method aimed at tracing the presence of secondary metabolites contained in plants so that their potential as medicinal plants can be used. This research is an experimental laboratory using the maceration extraction method to obtain neem leaf extract. This research aims to identify secondary metabolite compounds contained in the ethanol extract of neem leaves. This study conducted flavonoid, tannin, alkaloid, steroid and saponin tests for the ethanol extract of neem leaves. The results obtained from the neem extract contain flavonoid, tannin, alkaloid, steroid and saponin compounds. In conclusion, phytochemical screening shows that the methanol extract of neem leaves (Azadirachta indica Juss) positively contains alkaloids, flavonoids, tannins, phenols, terpenoids, and steroids.
Herbivory-induced Defense Responses in Brassicaceae: Implication on Secondary Metabolites Enrichment and Diversification - A Comprehensive Review Putri, Suci Indah; Delfi, Shyla Aulia; Santoso, Putra; Rahayu, Resti; Idris, Muhammad
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.v26i1.11004

Abstract

Plants of the Brassicaceae family display a highly complex and adaptive chemical defense system against biotic stresses, particularly herbivore attack. These defense mechanisms are physiologically based on the biosynthesis and activation of secondary metabolites, mainly glucosinolates, which are converted into toxic compounds such as isothiocyanates by the enzyme myrosinase upon tissue damage. This response is not only local, but also systemic, involving cross-interactions between roots and leaves, and is modulated by the hormones jasmonate (JA), salicylate (SA), and ethylene (ET). These complex interactions form a plant defense system that can be explicitly induced depending on the type and sequence of herbivore attack. In addition, molecular adaptation strategies, such as MYB gene expression, and engineering technologies, such as CRISPR/Cas9, have opened up opportunities to improve plant resistance. This study aims to analyze the physiological dynamics of Brassicaceae defense mechanisms, evaluate the role of hormonal and genetic regulation in enhancing plant resistance, and address the critical challenges posed by specialist herbivore adaptations and the socio-environmental implications of genetic engineering. By synthesizing these elements, this article presents a comprehensive review of the potential of these defense systems in advancing sustainable agriculture and promoting human health.
The Relationship Between Stunting and Decrease in Cognitive Ability: A Literature Review Adnyani, I Gusti Ayu Putu Widi; Pasek, Made Suadnyani; Wahyuni, Ni Putu Dewi Sri
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.v26i1.11005

Abstract

Chronic nutritional inadequacy causes stunting, which affects children's physical appearance and mental development, particularly in the first 1,000 days of life. This research used narrative synthesis to evaluate literature. Google Scholar was searched for 2020–2025 literature on stunting influence on cognitive development in children. Original research papers (excluding reviews) with a citation count ≥50 and first five pages of search results were considered for inclusion. Nine articles were chosen for final analysis after reviewing titles and abstracts for relevance and eligibility. The synthesis found persistent links between early-life stunting and worse memory, language, numeracy, and literacy scores. These relationships remained substantial after adjusting for environmental and socioeconomic characteristics. Stunting impairs brain development by disrupting neurogenesis, synaptogenesis, and myelination owing to nutritional deficits in early growth. The data confirm that stunting affects long-term intellectual capacity as well as physical development. This review enhances scientific knowledge of neurocognitive pathways influenced by early-life undernutrition and emphasizes the need for early dietary therapies to avoid permanent brain impairment. This study highlights the need for integrated strategies that combine nutritional and cognitive stimulation interventions in child health programs, while also identifying future directions for research on evidence-based early development policies.        

Page 243 of 252 | Total Record : 2520

 241   242   243   244   245 

Filter by Year

2013 2026


Reset
Filter By Issues
All Issue Vol. 26 No. 1 (2026): Januari-Maret Vol. 25 No. 4a (2025): Special Issue Vol. 25 No. 4 (2025): Oktober-Desember Vol. 25 No. 4b (2025): Special Issue Vol. 25 No. 3 (2025): Juli-September Vol. 25 No. 2 (2025): April-Juni Vol. 25 No. 1 (2025): Januari - Maret Vol. 24 No. 4 (2024): Oktober - Desember Vol. 24 No. 3 (2024): July - September Vol. 24 No. 2b (2024): Special Issue Vol. 24 No. 2 (2024): April - Juni Vol. 24 No. 1 (2024): Januari - Maret Vol. 24 No. 1b (2024): Special Issue Vol. 23 No. 4 (2023): October - December Vol. 23 No. 3 (2023): July - September Vol. 23 No. 2 (2023): Special Issue Vol. 23 No. 2 (2023): April-June Vol. 23 No. 1 (2023): Special Issue Vol. 23 No. 1 (2023): January - March Vol. 22 No. 4 (2022): October - December Vol. 22 No. 3 (2022): July - September Vol. 22 No. 2 (2022): April - June Vol. 22 No. 1 (2022): January - March Vol. 21 No. 3 (2021): September - Desember Vol. 21 No. 2 (2021): Mei - Agustus Vol. 21 No. 1 (2021): Januari - April Vol. 20 No. 3 (2020): September - Desember Vol. 20 No. 2 (2020): Mei - Agustus Vol. 20 No. 1 (2020): Januari - April Vol. 19 No. 2 (2019): Juli - Desember Vol. 19 No. 1 (2019): Januari - Juni Vol. 18 No. 2 (2018): Juli - Desember Vol. 18 No. 1 (2018): Januari - Juni Jurnal Biologi Tropis vol.17 No.2 Desember 2017 Jurnal Biologi Tropis vol.17 No.1 Juni 2017 Jurnal Biologi Tropis. Vol.16 No.2 Desember 2016 Jurnal Biologi Tropis. Vol.16 No. 1 Juni 2016 Jurnal Biologi Tropis. Vol.15 no.2 Desember 2015 Jurnal Biologi Tropis. Vol.15 No. 1 Juni 2015 Jurnal Biologi Tropis. Vol.14 No. 2 Desember 2014 Jurnal Biologi Tropis. Vol.14 No. 1 Juni 2014 Jurnal Biologi Tropis. Vol.13 No. 2 Desember 2013 Jurnal Biologi Tropis. Vol.13 No.1 Juni 2013 More Issue