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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 986 Documents
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The Effect of Different Orthodontic Force on MMP 9 Expression in a Rat Diabetic Model Maulana, Hafiedz; Hikmah, Nuzulul; Shita, Amandia Dewi permana; Permatasari, Nur; Widyarti, Sri
Journal of Tropical Life Science Vol 4, No 2 (2014)
Publisher : Journal of Tropical Life Science

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Abstract

Orthodontic forces produce alveolar bone and periodontal ligament remodeling that cause tooth movement. Diabetes can increase tissue damage and, therefore, contributes to the process of orthodontic tooth movement. The aim of this study was to determine the effect of differently orthodontic forces on the expression of MMP nine in rat diabetic model. Twenty four male Wistar rats were divided into three groups of control and three groups of treatment streptozotocin-induced diabetes with stratified doses. Application of orthodontic appliance was performed with different forces (10, 20 and 30 grF). Orthodontic appliance was performed on both upper incisors. Immunohistochemical (IHC) analysis was used to observe the expression of MMP 9 and HE (Hematoxylen Eosin) staining to observe the number of fibroblasts. Statistical analysis was carried out using t-test and Spearman correlation analysis to determine the difference of MMP nine expression and number of fibroblasts between groups, and determine the correlation of both. The results showed an increased expression of MMP 9 and decreased of fibroblasts number in diabetic rats, along with increasing magnitude of orthodontic forces. The different orthodontic forces given to diabetic rats affect the expression of MMP 9 and the number of fibroblasts, in which the expression of MMP 9 increased along with the increase of orthodontic forces, both at pressure and tension sides.
Intraperitoneal Injection of High Tumor Necrosis Factor (TNF-α) Serum Increase Soluble Fms-like Tyrosine Kinase-1 (sFlt-1) and Blood Pressure of Pregnant Mice Wicaksono, Bramantyo Aji; Baktiyani, Siti Candra Windu; Fitri, Loeki Enggar
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.05.02.01

Abstract

Preeclampsia has major symptoms of hypertension and proteinuria and is a cause of significant maternal and infant mortality in the world. The slow development of preeclampsia research possibility caused by the difficulty in acquiring animal preeclampsia. Many existing animal model have been developed, but most of them are expensive to do. The purpose of this study was to determine the effects of intraperitoneal injection of pregnant patients serum with high TNF-α levels toward sFlt-1 serum concentration and blood pressure of pregnant mice. Pregnant patients serum with high TNF-α levels (>20 pg/mL) was injected intraperitoneally to pregnant mice at gestational age 13 and 14 days. At 18 days of gestation, the blood pressure was measured, then the mice were dissected and the serum was taken to measure serum sFlt-1 concentration using ELISA kit(Bioassay Technology Laboratory, E0611Mo). The results showed there was a significant increase in blood pressure (p = 0.000) and the sFlt-1 levels (p = 0.002) of pregnant mice group that injected by pregnant patient serum with high TNF-α levels compare to control group. From these data it can be concluded that intraperitoneal injection of pregnant patients serum with high TNF-α levels to pregnant mice can increase blood pressure and sFlt-1 serum concentration of mice.
Pseudomonas fluorescens and Pseudomonas putida for Promoting Growth of Jatropha curcas Seedling Root Sumarsih, Sri; Haryanto, Darban
Journal of Tropical Life Science Vol 2, No 2 (2012)
Publisher : Journal of Tropical Life Science

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Abstract

Pseudomonas fluorescensandP. putida are Plant Growth Promoting Rhizobacteria (PGPR) that can produce growth hormone. The objective of this study is to know the effects of those two combined species of PGPR on seedling root growth of Jatrophacurcas. The condition of the seedling root determines the success of dry land cultivation. The root which has wider coverage, is larger in number, and is bigger in diameter makes seedling more resistant to stress in dry land environment. In the experiment, two kinds of plant materials are used for seedling, the Jatropha seed and stem material, which are treated in a mixed culture of PGPR. For the Jatropha seed, this mixed culture of PGPR is given at the same time of cultivating the sprout on the seedling medium. For the stem cutting, the PGPR is poured in together during the first watering of the seedling cultivation medium. In the fourthweek, the observed growth parameters are root length, root diameter, primary and secondary lateral root numbers, Root Length Density (RLD), Frequency of Lateral Root (FLR), and Specific Root Length (SRL). These data are analyzed using analysis of variant with DMRT test at 0.05 level of significance. The result of this study shows that PGPR tend to reduce FLR values on the seedling root made from seeds. On the seedling root made from stem cutting, PGPR increase the root length, primary and secondary lateral root numbers, root diameter, FLR and SRL values as well. Keywords: Pseudomonas, PGPR, root, Jatropha
Diversity of Macroalgae in Kasiak Gadang Island Nirwana Beach, Padang - West Sumatra, Indonesia Hadi, Faisal; Zakaria, Indra Junaidi; Syam, Zuhri
Journal of Tropical Life Science Vol 6, No 2 (2016)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.06.02.06

Abstract

This study had been conducted in October – November 2014. This study aims to know about the diversity of macroalgae in Kasiak Gadang Island, Nirwana Beach, Padang, West Sumatra Indonesia. The method used in this research is line and belt transect. The result of this study is five species of macroalgae founded on this island. There are Padine minor, Sargassum crassifolium, Sargassum cristaefolium, Turbinaria decurrens, and Halimeda sp. Based on relative density, P. minor had 67.15% at Station I and 51.72% at Station II. S. crassifolium had 83.52% at Station III. T. decurrens had 50.86% at Station IV. The index of diversity of macroalgae in Kasiak Gadang Island is about 0.48 – 1.27. According to the diversity index criteria, macroalgae diversity in this island is considered being in low.
Butterflies Diversity in Brawijaya University, Veteran, Jakarta and Velodrom Green Open Space Nisa', Ayu Raisa Khairun; Mukti, Minahanggari; Hamzah, Muhammad Fathoni; Mustakim, Arif; Abidin, Zainal
Journal of Tropical Life Science Vol 3, No 2 (2013)
Publisher : Journal of Tropical Life Science

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Abstract

Butterflies have some roles in environmental as pollinator and bioindicator. Habitat is one of important factor to support butterflies growth. The aim of this research was to describe butterflies diversity in some green open spaces in Malang. Direct observations of butterflies diversity, vegetation structures and abiotic factors in Brawijaya University, Veteran, Jakarta and Velodrom Green Open Space were conducted on June 2012. Sampling was took place in each sites using cruising method in three times observation at 07.00, 11.00 a.m. and 3.30 p.m . Data were analyzed by statistical descriptive using Microsoft Excel 2007 and PAST. The result showed that butterflies composition in all sites dominated by Delias sp., Leptosia nina and Eurema venusta. The diversity index of all sites showed moderate rank that indicate communities equilibrium in environment was still good. In this case, Velodrom Green Open Space has the highest one of diversity index, it was about 2,199. Brawijaya University and Jakarta Green Open Space have a high similarity index based on Morisita Index. The highest abundance of butterflies was observed at 11.00-12.30 a.m. Delias sp. and Leptosia nina has temporal spread all day long, while Eurema venusta just in day light.
Isolation of Arsenic Resistant Escherichia coli from Sewage Water and Its Potential in Arsenic Biotransformation Bista, Basanta; Shakya, Sangita
Journal of Tropical Life Science Vol 7, No 1 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.01.11

Abstract

Arsenic contamination in drinking water from ground water poses a threat to the health of a large population in developing countries in Asia. This has sparked great interests in the potential of different microbes in arsenic resistance and removal from water. This study involves isolation of arsenic resistant Escherichia coli from sewage water from Kathmandu University and investigation of its attributes. Arsenic resistant E. coli was successfully isolated which could survive in high concentration of arsenic. The maximum tolerance of arsenite was 909.79 mg/L (sodium arsenite) and 3120.1 mg/L arsenate (sodium arsenate) which is well above most natural concentration of arsenic in ground water. This particular E. coli tolerated multiple heavy metal like silver nitrate, cobalt sulphate, cadmium chloride, nickel chloride, mercury chloride, copper sulphate, and zinc chloride at concentration 20 µM, 1 mM, 0.5mM, 1mM, 0.01 mM, 1 mM, and 1 mM respectively which are concentrations known to be toxic to E. coli. Biotransformation of arsenite to arsenate was also checked for by a qualitative silver nitrate technique. This E. coli was able to transform arsenate to arsenite. It showed some sensitivity to Ciprofloxacin, Gentamicin and Nalidixic Acid. As E. coli and its genome are very widely studied, these particular properties have a lot of potential in microbial remediation or microbial recovery of metals and possible recombination approaches.
Changes in Organic, Inorganic contents, Carbon Nitrogen ratio in decomposingAvicennia marinaand Rhizophora mucronataleaves on tidal mudflats in Hajambro creek, Indus delta, Pakistan Farooqui, Zafar; Siddiqui, Pirzada Jamal; Rasheed, Munawwer
Journal of Tropical Life Science Vol 4, No 1 (2014)
Publisher : Journal of Tropical Life Science

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Abstract

Leaf decomposition of Avicennia marina (Forskål) Vierh in Denkschr and Rhizophora mucronata (Poiret) was studied in situ using litterbags in Hajambro creek, Indus deltA. A single exponential model was presented, which best described the rate of decomposition for both the species. The rate of decomposition was species specific, A. marina leaves decomposed slower than the R. mucronata (p
Soil Seed Bank of Two Karst Ecosystems in Bogor, Indonesia: Similarity with the Aboveground Vegeta-tion and Its Restoration Potential Putri, Winda Utami; Qayim, Ibnul; Qadir, Abdul
Journal of Tropical Life Science Vol 7, No 3 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.03.07

Abstract

Karst ecosystem in Bogor is currently threatened by mining activities. Restoration of the disturbed karst areas is urgently required. Seed banks are considered as an important potential seed sources for restoration. This study was conducted to quantify the composition and species diversity of the aboveground vegetation and the seed bank. The study determined the correspondence between the seed bank with the aboveground vegetation in relation with ecosystem restoration. Twenty 6 m × 6 m vegetation plots were established. A total of sixty soil samples were taken from the study sites. The seed bank was studied using germination experiment. All plant species in the vegetation plots and seedlings growing from all soil samples were identified and the number was counted to determine the composition, index of diversity, and index of similarity. There were 80 species from 41 families found in the seed bank in Mt. Nyungcung, dominated by Clidemia hirta (Melastomataceae), whereas 50 species from 29 families found in Mt. Kapur with Cecropia peltata (Urticaceae) dominated the site. Diversity index of Mt. Nyungcung and Mt. Kapur seed banks were 2.09 ± 0.21 and 1.78 ± 0.47 respectively. The similarity index between seed bank and the aboveground vegetation in the two study sites were 32.86% and 27.66% respectively. Mt. Nyungcung seed bank was more diverse than Mt. Kapur. The similarity between the seed bank with the aboveground vegetation in the two study sites were low. Further assessment is needed to determine the role of the seed bank of Mt. Nyungcung and Mt. Kapur in the restoration of the ecosystems.
A Case Study of the Phenotypic Variations in Barilius Bendelisis (Hamilton) from a Perennial Stream and a Fish Pond of Garhwal Himalayan Region of Uttarakhand, India Singh, Pranav; Nautiyal, Shivani; Swami, Navneet; Rana, Jitendra Singh; Gusain, Manju Prakash; Gusain, Om Prakash
Journal of Tropical Life Science Vol 10, No 3 (2020)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.10.03.02

Abstract

A comparative study on the morphometric and meristic variables of Barilius bendelisis (Ham.) from two different water bodies, i.e., Khanda Gad, a perennial spring fed stream and fish pond in the Garhwal Himalayan region of Uttarakhand was made during the present study. A total of 100 specimens were analysed for 26 different morphometric variables and 14 meristic counts. The majority of morphometric variables showed linear relationship when expressed in relation to total length and head length, whereas meristic counts remained constant with increasing body length. Standard length was found to be the highly correlated character in samples from both sites. Principal Component Analysis of 10 significant morphometric variables yielded three components accounting for 73.38% of the total variation. Principal Component Analysis of 3 meristic variables yielded single component accounting for 62.3% of total variation. Discriminant Function Analysis for morphometric and meristic variables showed that 98% and 83% of individuals were allocated into their original populations respectively. The cluster analysis for morphometric characters showed of fish populations from both sites formed two major clades, thus significantly differentiating the two stocks of fish population.
COVID-19 to Curb Positive Climate and Negative Recession Zambare, Vasudeo Pandharinath
Journal of Tropical Life Science Vol 11, No 1 (2021)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.11.01.15

Abstract

A novel coronavirus originated COVID-19 a pandemic disease that is rapidly progressing and spreading the infection and death cases thorough out the globe [1-2]. It's an alarming situation for an individual's survival. As a remedial action, many countries opted for curfews or lockdown and serious actions were taken by the government to stop the spreading of novel coronavirus by shutting down private industries, schools, offices, and many more nonessential businesses. The outcome of lockdown resulted in almost negligible use of polluting vehicles, and industries which has direct setbacks on the global economy.            The lockdown option showed a positive impact on health by minimizing the risk of COVID-19 infectivity as well as environmental rejuvenate in terms of tremendous improvement in air quality, sound pollution reduction, and ultimately the ozone layer healing. Thus, a precautionary measure taken against pandemic disease COVID-19 would have a positive impact on climate change at the global level. The financial activity has caught up and stock markets have to plummet alongside the declining environmental pollution including carbon emissions, sound, and natural water resources. It's the precise opposite of the drive towards a sustainable economy that many have been a campaigner for the future. But, a negative setback of COVID-19 toll of early deaths of family belongings, food scarcity, loss of jobs, struggle to earn the daily bread, family security, homesick and mental sickness.  The widespread job losses would be in danger the income source of millions as businesses are struggling to cope with the limitations being put in place to control the deadly coronavirus during the lockdown period.            Thus, I urge every national, public-private organization, research institutes to take early remedial strategies for the negatively affected community surveillance, health encouragement, education, food security, and job opportunities to control the 21st century’s biggest recession [3]. COVID-19 impacted improvement in the environmental air and water quality is a natural healing process and all nationals must maintain it in the future by adopting good hygiene and behavioral practices.

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