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Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences
Published by Universitas Brawijaya
ISSN : 20875517     EISSN : 25274376     DOI : -
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
The Journal of Tropical Life Science (JTLS) provides publication of full-length papers, short communication and review articles describing of new finding or theory in living system, cells and molecular level in tropical life science and related areas. The journal publishes articles that report novel findings of wide Tropical Life system phenomenon in the areas of biodiversity, agriculture, fisheries, health, husbandry, forestry and environmental technology. JTLS has 1 volume with 3 issues per year.
Arjuna Subject : -
Articles 815 Documents
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Population Study of the Golden Chicken Fern (Cibotium barometz (L.) J. Sm. in Riau Province, Sumatra Praptosuwiryo, Titien Ngatinem; Puspitaningtyas, Dwi Murti; Pribadi, Didit Okta; Rugayah, Rugayah
Journal of Tropical Life Science Vol 7, No 2 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.02.13

Abstract

Cibotium barometz (L.) J.Sm. (Cibotiaceae) is an important export commodity for both traditional and mod-ern medicine. Populations of this species in several countries have decreased rapidly due to the uncontrolled collection of the rhizome parts for medicinal purposes. Since 1976, this species has been included in Appendix II of the Convention on International Trade in Endangered Species (CITES). This means that no export is allowed without a prior permit issued by the CITES committee.  In order to utilize an endangered species sustainably, the global NDF (Non-Detriments Finding) system is applied for determining annual quotas. Therefore, monitoring and updating the inventory of C. barometz in its natural habitat should be carried out annually. A population study of C. barometz carried out in 2011 in Riau Province, Sumatra, is reported here. The aims of the study were: 1) to inventory C. barometz and determine its variation in Riau Province, Suma-tra, 2) to study the distribution and ecology of C. barometz, and 3) to assess the population size of this spe-cies by using random search methodology incorporating belt line transects. Two variants of C. barometz are recognized; they are the golden yellow and golden brown variants. C. barometz is distributed in eight loca-tions of Kampar District of Riau Province, in the secondary forest and rubber agroforest between 80 m and 600 m above sea level (asl). This species grows well in open to partially opened areas of secondary forest and rubber plantation in hills with a range of slope between 30° and 90°, with a relatively high humidity, 60 – 90%, in acid to nearly neutral soil, with a range of soil fertility from very poor to very humus rich soil.  The average population density determined in our study was 20 plants per 100 square meter. The highest popula-tion size was in the secondary forest of Bukit Kuda Beban at 590 – 600 m asl., viz. 9405 plants with a popula-tion density  of 47 plants per 100 square meter.
Low Levels of Vitamin D correlate with Hemoglobin A1c and Interleukin-10 Levels in Pediatric Type 1 Diabetes Mellitus Patients Wulandari, Desy; Cahyono, Haryudi A.; Widjajanto, Edi; Puryatni, Anik
Journal of Tropical Life Science Vol 4, No 3 (2014)
Publisher : Journal of Tropical Life Science

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Abstract

Eusideroxylon zwageri (Ulin) as Key Species in Two Zones of Sangkima Rain Forest, Kutai National Park, East Kalimantan Haryati, Jehan Ramdani; Azizah, Intan N.; Arisoesilaningsih, Endang
Journal of Tropical Life Science Vol 1, No 1 (2010)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.1.1.%x

Abstract

Aim of this research was to study trees' diversity quality in primary and intensively used forest of Sangkima area in Kutai National Park (TNK), East Kalimantan (Borneo). Field observation was carried out by vegetation analysis using 17 sampling plots of 25x25 m2. Community structure of each forest was determined by calculating trees' density, basal area, frequency, important value and stratification of species. While trees diversity was estimated by taxa richness, Shannon-Wiener diversity index, and rate of endemism. Both forests were compared by Morisita community similarity index. Data were tabulated by Microsoft Excel 2007 and statistically analyzed by PCA method and supported by hierarchical cluster analysis in SPSS 15.00 for windows. The result showed that diversity quality in primary and intensively used forest of Sangkima TNK was high, indicated by similar stratification. The forests were composed by A stratum trees of > 30 m high to ground cover plants, but they were dominated by B stratum trees of 20-30m high. Primary forest's formation was Eusideroxylon zwageri-Mixed Dipterocarpaceae, while intensively used forest's formation was E. zwageri. Taxa richness of both forests was not different significantly. In the primary forest was found 34 species, 25 families and 16 orders, while intensively used forest was found 36 species, 20 families and 13 orders. Diversity Index of primary forest (H=4.57) was slightly higher than secondary forest (H=4.28). Rate of endemism of both forests reached 100%. Eusideroxylon zwageri and Cananga odorata were co-dominant in the Borneo rain forest. Tree of E. zwageri showed a biggest trunk and largest canopy. Cananga odorata showed a high density in both zones. Luxurious jungle performed A to E strata, but B stratum was dominant. Based on those five characters, trees' diversity quality in Sangkima was still high. Bi plot analysis showed that trees' community structure of both forests composed by three groups. In secondary forest, E. zwageri was a key species and characterized by high important value, while species C. odorata, Dyospiros borneensis and Dillenia beccariana found in a high distribution, otherwise other trees were classified into the 3rd group. Comparing to the secondary forest, even though E. zwageri was also as dominant tree, but the virgin one showed more species growing in a better density, distribution and dominance.Keywords: Tree, Borneo, rain forest, community structure, quality diversity, Kutai National Park
Growth Adaptation of Two Indonesian Black Rice Origin NTT Cultivating In Organic Paddy Field, Malang-East Java Budiman, Budiman; Arisoesiloningsih, Endang; Edi Wibowo, Ratno Bagus
Journal of Tropical Life Science Vol 2, No 3 (2012)
Publisher : Journal of Tropical Life Science

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Abstract

This research is aimed to study the growth adaptation of two Indonesian black rice NTT in origin which is cultivating in organic paddy field in Malang - East Java and its problems during a planting period. A descriptive exploratory research was conducted in two organic rice fields in Kepanjen District, Malang Regency. Those fields were grown with two different varieties of black rice NTT in origin namely, Laka and Woja Laka. Each rice field was recorded periodically. The growth was including the plant height, biomass, density of tiller, panicle and spikes, dry seed weight and the problem correlated to pest and climates limitation. The results showed that Woja Laka and Laka black rice varieties slightly gave a different growth pattern. Laka variety was taller than Woja Laka, i.e. the Laka could reach 200 cm of height, while the Woja Laka was maximum 150 cm of height. However, the density of Woja Laka tiller and its panicle were almost double than the Laka ones. The dry seed weight and spikes number of Woja Laka were much higher than in Laka ones. In terms of organic farming system, Laka rice seemed to be more sensitive towards the strong wind conditions and bird or rat attacks rather than Woja Laka. Both pests attacked on both black rice along growing period, but rat preferred to attack vegetative part, otherwise bird strongly disturbed during generative period. Key words: black rice, growth, Laka, Woja Laka, organic paddy field
Anatomical and Cytological Features of Spathoglottis plicata from Java Island Chikmawati, Tatik
Journal of Tropical Life Science Vol 3, No 2 (2013)
Publisher : Journal of Tropical Life Science

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Abstract

Spathoglottis plicata is a ground orchid that displays large variation in flower features. In spite of large variation on morphological characters, its anatomical and cytological characters are not well known. This paper described the leaf anatomical and chromosomal features of S. plicata. Leaf anatomy was observed from both transverse and paradermal sections of leaves. Chromosome numbers were observed from root tip cells. Epidermis of all S. plicata variants comprised of two cell shapes, the rectangle cells located above veins, while the polygonal one located in between veins. Stomatal type was brachitetracyclic, which were only found on lower epidermis. Leaf transversal section comprised of one layer of upper and lower epidermis, spongy mesophyll, and vascular tissue. The number of leaf hair varied depended on the original habitat and altitute. All variants of S. plicata had same chromosome number (2n=40).
Prominently Increased of Mannose Binding Lectin (MBL) and Myeloperoxidase (MPO) Levels in Severe Valve Regurgitation and Heart Failure of Rheumatic Heart Disease Putri, Rachmania; Suwarniaty, Renny; Fitri, Loeki Enggar; Nugroho, Susanto; Rahman, Mohammad Saifur
Journal of Tropical Life Science Vol 7, No 2 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.02.04

Abstract

Rheumatic heart disease (RHD) is mediated by an abnormal immunological response following a Streptococcus pyogenes infection that induces a disturbance of oxidants and antioxidants balances. Mannose-binding lectin (MBL) binds to N-acetylglucosamine, a molecule present on the Streptococcus cell wall and human heart valves. There is a disturbance of oxidant and antioxidant balance in rheumatic disease. Myeloperoxidase (MPO) is a marker of oxidative stress and inflammation. This study was aimed to determine the correlation of MBL and MPO levels and severity of valvular regurgitation and heart failure (HF) in RHD patients. A case-control study was conduct using human peripheral blood samples from 32 children aged 6 to 14 years old. The subjects were divided into two groups: 16 RHD patients included in the case group and 16 healthy children as a control group. The level of MBL and MPO was investigated using ELISA method. There were significant differences on MBL and MPO level between patient and control group. The level of MBL and MPO were significantly increased in RHD group, especially on severe valvular regurgitation. There was a strong correlation between MBL and MPO levels and the severity of valvular regurgitation (r = 0.94 and r = 0.88). The least significant diff-erence (LSD) analysis showed that significant difference occurs in the severe heart failure group. Our research revealed that the MBL and MPO levels in pediatric RHD patients were significantly higher than in healthy children. The MBL and MPO levels were significantly correlated with the severity of valvular regurgitation and heart failure.
Genistein Increase Intracellular Distribution of the High Motility Group Box-1 through p38 Pathway in HeLa culture cells induced by Tumor Necrosis Factor-α Herbani, Merlita; Widodo, Aris; Suyuti, Hidayat
Journal of Tropical Life Science Vol 4, No 2 (2014)
Publisher : Journal of Tropical Life Science

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Abstract

Cervical cancer is one kind of many cancer that cause death to women around the world. Many studies had support the statement that inflammation has a strong linkage with cancer development. Several factors like proinflammatory factor can influence tumor cell microenvironment, and induce a faster proliferation. TNF-α is suspected can induce proliferation. While cancer itself can induce inflammation, which is marked by several marker. One of them is HMGB1, released from the cell as active secretory lysosomes or passive diffusion. Genistein has demonstrated growth inhibitory effects of various types of cancer cells. It inhibits tyrosine kinase pathway, which can be activated by TNF-α. One of those pathways that have the link with proliferation is p38. This study tries to reveal about inhibitory effect of genistein toward p38 pathway that had been activated by TNF-α. This research was conducted by exposing cultured HeLa cells with various doses of genistein for 90 minutes, and then exposed to TNF - α 10 ng / mL for 20 minutes. Observations were made with a confocal microscope, by staining the cells with pp38-TRITC and HMGB1 antibody. The intensity was measured and analyzed by Fluoview software. The results suggest that there be significant differences between pp38 intranuclear intensity and HMGB1 extranuclear intensity of each dose of genistein (p = 0.000, ANOVA). pp38 and HMGB1 intensity were increased along with increasing genistein dose, but at high dose there were noted decreasing of pp38 and HMGB1 intensity. At apoptotic dose, pp38 and HMGB1 intensity were increased markedly, showing the effect of apoptosis. In general, increasing doses of genistein increase intranuclear p38 activation and HMGB1 extranuclear translocation. So there were a strong linkage between p38 activation and HMGB1 translocation in this study.
Numerical Study of Predator-Prey Model with Beddington-DeAngelis Functional Response and Prey Harvesting Fitriah, Fira; Suryanto, Agus; Hidayat, Noor
Journal of Tropical Life Science Vol 5, No 2 (2015)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.05.02.09

Abstract

A modified Leslie-Gower predator-prey model with Beddington-DeAngelis functional response and Michaelis-Menten type prey harvesting is studied. The equilibrium points of the system are investigated. To see the stability of each equilibrium point, we perform some numerical simulations. Our numerical simulations show that the extinction of prey or survival of both prey and predator are conditionally stable.
TRADITIONAL RURAL WETLANDS IN HARYANA STATE OF INDIA ARE CURRENTLY CONFRONTING MULTICORNERED THREATS LEADING TO EXTINCTION SOONER THAN LATER Gupta, Dr.Rohtash chand; Kaushik, Dr. Tirshem Kumar
Journal of Tropical Life Science Vol 2, No 2 (2012)
Publisher : Journal of Tropical Life Science

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Abstract

The most serious threat to traditional rural ponds in Haryana is associated with transformed societal behavioural patterns, ethics, values and life style, amongst several others. The siltation of ponds with adjoining areas, soil coming in with rain water is a very serious cause of stratification of rural ponds. Also contracting of village community land for sun drying of cow dung cakes inspires villagers to overload periphery of each pond with cow dung turning the premises into grave-yard of dung. This dung is the major source of polluting pond water into blackish water with high load of organic matter. Moreover, it leads to over excessive eutrophication. Building of major highways and connectivity roads have resulted into compartmentalization and degradation of village ponds. Inhabitation of peripheral village ponds boundaries by lower section of society for dwelling purposes is more threat to wetlands. The indifferent inclination of villagers towards silted ponds drenched in bad odour and blackish sludge is the story of 80% of the cases. The total blockage of run-off rainy water towards the natural age old rural ponds due to obstruction by way of human inhabitation has resulted into desertification of shallow water sheet in 90% of the cases. The oblivion of harvesting dried silt in summer for brick making has spelled doom for the ponds turning them into flat ground through successive decades and so on. The water quality in all ponds was overshooting the decaying stage due to the continuous mixing of cow dung drenched rainy water. Over excessive usage of ponds for bathing of cattle, dumping of cow dung and rotten vegetables waste has turned ponds into live sinks of dirt, garbage and rural dairy wastes. Majority of village ponds are now out of existence or in deep black sludge laden or converted into Fish-Farming wetlands. The present studies have indicated that Winter migratory birds like Greylag Goose Anser anser, Bar-headed Goose Anser indicus, Mallard Anas platyrhynchos, Gadwall Anas strepera, Northern Shoveller Anas clypeata, Northern Pintail Anas acuta, Garganey Anas querquedula, Common Teal Anas crecca, Common Pochard Aythya ferina, Tufted Pochard Aythya fuligula, Common Coot Fulica atra, Little Ringed Plover Charadrius dubius, Kentish Plover Charadrius alexandrines, Spotted Redshank Tringa erythropus, Common Redshank Tringa tetanus, Marsh Sandpiper Tringa stagnatilis, Wood Sandpiper Tringa glareola and Pied Avocet Recurivirostra avosetta arrive in the extremely dilapidated rural ponds in Haryana from far off places including Russia, Siberia, China, and Caspian region, east Asia each winter season without any break. As such the extinction of ponds in Haryana directly threatens global avian biodiversity. Keywords: Traditional Rural Wetlands, Perennial Rainy Water, Road Side Puddles, Land Filling, Commercial and Residential Construction, Highway reconstruction
Genetic variation of Dacrycarpus imbricatus in Bromo Tengger Semeru National Park, East Java Based on trnL (UAA) Intron Region Rahadiantoro, Apriyono; Hakim, Luchman; Arumingtyas, Estri Laras
Journal of Tropical Life Science Vol 3, No 2 (2013)
Publisher : Journal of Tropical Life Science

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Abstract

The conservation of Jamuju Dacrycarpus imbricatus (Blume) de Laub. in Java Island has been considered important. One of the the limitation of such program is related to the viability data on the genetic diversity of species target. The aim of study was to determine genetic variation of D. imbricatus in Bromo Tengger Semeru Park, East Java based on trnL (UAA) intron region. DNA sample was collected from several D. imbricatus seedling population in Bromo Tengger Semeru National Park (BTSNP) in East Java. DNA was isolated and amplified using PCR. Genetic variation was estimated using trnL (UAA) intron sequences. This study confirm that D. imbricatus in Bromo Tengger Semeru has low genetic diversity. Based on the phylogenetic tree, D. imbricatus population from Bromo Tengger Semeru Park is closely related to D. imbricatus from Sabah-Malaysia and Hainan-China with 100 % similarity value. These data implies that population and habitat management of D. imbricatus in Bromo Tengger Semeru should be designed to enhance the population survival in the future.

Page 34 of 82 | Total Record : 815

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