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The Journal of Experimental Life Sciences (JELS)
Published by Universitas Brawijaya
ISSN : 20872852     EISSN : 23381655     DOI : 10.21776/ub.jels
Core Subject : Health, Science,
Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Neuroscience
The Journal of Experimental Life Science (JELS) is a scientific journal published by Postgraduate School, University of Brawijaya as distribution media of Indonesian researcher’s results in life science to the wider community. JELS is published in every four months. JELS published scientific papers in review, short report, and articles in Life Sciences especially biology, biotechnology, nanobiology, molecular biology, botany, microbiology, genetics, neuroscience, pharmacology, toxicology, and Applied Life Science including fermentation technology, food science, immunotherapy, proteomics and other fields related to life matter. JELS is a scientific journal that published compatible qualified articles to the academic standard, scientific and all articles reviewed by the expert in their field. The Journal of Experimental Life Science (JELS) have a vision to become qualified reference media to publish the best and original research results and become the foundation of science development through invention and innovation on cellular, molecular, nanobiology, and simulation work related to life matter rapidly to the community. The Journal of Experimental Life Science (JELS) has objectives to published qualified articles on research’s results of Indonesian researchers in life science scope. JELS encompasses articles which discuss basic principles on natural phenomenon with cellular, molecular, and nanobiology approach.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 10 No. 3 (2020)" : 5 Documents clear
The Effect of Methyltestosterone Hormone Immersion on Male Formation in Gourami Larvae (Osphronemus goramy Lacepè¨de, 1801) Tatang Tatang; Maheno Sriwidodo; Harsuko Riniwati
The Journal of Experimental Life Science Vol. 10 No. 3 (2020)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2020.010.03.03

Abstract

The methyltestosterone hormone is a synthetic hormone of androgen and has been used to obtain the juveniles of male mono-sexual fish such as Tetra Congo, Tilapia, and Betta. The methyltestosterone use on gourami has not maximized. It because there is no data on the exact age of larvae to produce maximum male mono-sexual juveniles, so it is necessary to do research on the effect of methyltestosterone hormone on the age of gourami larvae on the success of male mono-sexual formation and get the right larval period to obtain maximum survival gourami. The methods of this research were conducted using a completely randomized design with four treatments of the age of gourami larvae aged ten days, 15 days, 20 days, and 25 days. Each procedure was repeated three times. Data analysis used ANOVA analysis and LSD test. The larvae are soaked in a solution containing 5 ppm of hormones for 24 hours. The results showed that the administration of the hormone methyltestosterone to gourami larvae (Osphronemus goramy Lacepè¨de, 1801) with different ages had a very significant effect (P <0.01) on male sex formation with the highest average percentage of males obtained in treatment B (15-day larvae age) that is equal to 82.33% and the lowest in the treatment of larval period of 10 and 20 days is 74.00%. Keywords: Gourami, hormone, juvenile, methyltestosterone, Osphronemus goramy.
Isolation and Screening of Phosphate and Potassium Solubilizing Endophytic Bacteria in Maize (Zea mays L.) Hilya Azizah; Saptini M. Rahajeng; Yoga D. Jatmiko
The Journal of Experimental Life Science Vol. 10 No. 3 (2020)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2020.010.03.04

Abstract

Maize (Zea mays L.) is a functional food source in Indonesia after rice and wheat. Increasing maize productivity can be done by developing a proper environment and nutritional availability during cultivation. The use of endophytic bacteria as biofertilizers is one prospective approach in reducing the synthetic fertilizers in the soil, and improving the absorption of macronutrients, such as nitrogen, phosphate, and potassium, as well. This study aimed to obtain phosphate solubilizing bacteria (PSB) and potassium solubilizing bacteria (KSB). The samples of maize leaves, stems, and roots were isolated using a serial dilution method and selected on a Pikovskaya and Aleksandrov medium. A total of 10 PSB isolates were obtained from PKV selective agar media. The highest density was obtained in the root (8.3x105 CFU.mL-1), stems (5.7x105 CFU.mL-1), and leaves (4.6x105 CFU.mL-1), respectively. Meanwhile, the diversity index of the PSB ranges from 0.7 to 0.78, indicates that the diversity index is high. Four isolates from PSB (AP1.3, AP3.1, AP1.2, and AP1.4) were selected as KSB because of the clear zone formed in Aleksandrov's medium. The highest production of phosphate and potassium was obtained by AP1.3 with value 12.11 µg.mL-1 and 8.38 µg.mL-1 at 72h and 15d, respectively. Therefore, these isolates potential to be used as an organic fertilizer (biofertilizers). Keywords: Biofertilizer, endophytic bacteria, phosphate, potassium.
The Study of Combination Ethanol Extract of Averrhoa bilimbi L. and Momordica charantia L. on CD4+CD25+TGF-β+ Spleenocytes of Hyperglycemia Mice Harits Amrulloh; Bella Novinda; Intan Sartika; Sri Widyarti; Muhaimin Rifa'i
The Journal of Experimental Life Science Vol. 10 No. 3 (2020)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2020.010.03.05

Abstract

Diabetes mellitus is one of the four priority non-infectious diseases in the world. Plant-based medicine is an alternative treatment with few side effects. Star fruit (Averrhoa bilimbi L.) and bitter melon (Momordica charantia L.) are plants that have anti-hyperglycemic activity. Hyperglycemia produces Reactive Oxygen Species (ROS) that make the β-cells of the pancreas necrosis that decreasing insulin synthesis. The anti-inflammatory activity appears based on the relative levels of CD4+ and CD25+, which are TGF-β-producing regulatory T cells where TGF-β is a mediator that acts as an immunosuppressant. TGF-β would induce CD4 + T lymphocytes into T reg. The purpose of this study is to determine the profile of TGF-β on CD4+ and CD25+ spleenocytes on hyperglycemia mice after ABMC (Averrhoa bilimbi Momordica charantia mix) treatment. Mice were divided into 5 groups, non-diabetic (N), hyperglycemia (H), hyperglycemia with extract doses of 10 mg.kg-1 BW (P1), 40 mg.kg-1 BW (P2), and 160 mg.kg-1 BW (P3). Diabetic mice were obtained after a single injection dose of 145 mg.kg-1 BW streptozotocin (STZ). The result showed that ABMC can reduce blood sugar levels faster and able reduce the number of CD4+TGF-β+ cells in hyperglycemia mice. Keywords: Averrhoa bilimbi L., CD4+TGF-β+, CD25+TGF-β+, hyperglycemia, Momordica charantia L.
The Effect of Ethyl Methane Sulfonate (EMS) on The In Vitro Shoot Regeneration of Vetiver (Vetiveria zizanioides [L.] Nash) Wahyu Widoretno; Serafinah Indriyani
The Journal of Experimental Life Science Vol. 10 No. 3 (2020)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2020.010.03.01

Abstract

Production of vetiver in Indonesia is low, and its oil quality is not in line with market demand due to the low quality of plant raw materials. In vitro mutagenesis using ethyl methanesulfonate (EMS) has the potential to produce superior vetiver variants. This study aimed to determine the effect of EMS on the growth and shoot formation of in vitro vetiver plants. In vitro mutagenesis was performed by culturing in vitro shoots on MS medium containing EMS with various concentrations (0.02; 0.04; 0.06; 0.08; 0.1%) for 4 weeks. The results showed that the addition of 0.02-0.1% EMS to the medium affected on in vitro shoot growth and the ability to form new shoots. EMS increased the percentage of dead explants and decreased the average number of shoots, the number of shoots formed per explant, and the shoot fresh weight. The higher the EMS concentration in the medium, the smaller the percentage of survived explants and the lower ability to form new shoots with the average number of shoots formed less. The percentage of survived explants on the medium without the addition of EMS and on the medium with the addition of EMS with low concentrations of 0.02 and 0.04% reached 100% with an average number of shoots formed ranging from 8.5-10 shoots/explant. Meanwhile, the percentage of survived explants on medium with the addition of EMS with a high concentration of 0.08-0.1% was only 12.5-25% with an average number of shoots formed was less than 2 shoots/explant.Keywords: EMS, in vitro shoots, Vetiveria zizanioides.
The Genetic and Morphoagronomy Character Diversity of Black Soybean Plant (Glycine soja (L.)): Responses to Mutation Induction by Gamma Rays Irradiation and Ethyl Methane Sulfonate Shaddiqah Munawaroh Fauziah; Evika Sandi Savitri; Estri Laras Arumingtyas
The Journal of Experimental Life Science Vol. 10 No. 3 (2020)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2020.010.03.02

Abstract

Indonesia has a high dependence on imports of black soybeans. National black soybean needs continue to increase. Therefore, some efforts are needed to increase soybean production. Genetic resources of Black Soybeans with high diversity is also needed to develop superior varieties. One of the ways to increase soybean production is by mutation induction. Therefore, genetic resources of Black Soybeans with high diversity is needed to develop superior varieties. Mutagenesis using gamma rays and EMS can be used to increase genetic diversity. Doses used in this research were 1000 Gy gamma rays, 1% EMS, and combinations. This research was using a completely randomized design with morphoargonomy and molecular parameters. Morphoagronomy parameters observed were plant height, leaf area, seed weight, number of leaves, number of pods, and number of branches. ISSR markers with four primers (UBC 888, ISSR3, UBC876, and UBC889) were used to determine genetic variation of Black Soybeans. Based on the analysis of variance (ANOVA), it was shown that all parameters were able to give an effect on the morphoagronomy of black soybean plants. Gamma rays 1000 Gy were more effective in improving morphoagronomy of the plant in terms of plant height, seed weight, number of leaves, number of pods, leaf area, and number of branches. UBC 888 was the most effective primer to identify the genetic diversity of black soybeans that have been given mutation treatments.   Keywords: Black soybean, EMS, gamma rays, genetic variation, morphoagronomy.

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