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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 15 Documents
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Search results for , issue "Vol. 12 No. 3 (2022)" : 15 Documents clear
A short review on identification of ABCDE genes in monocot plants: Short review of ABCDE genes in monocot plants Suchilkumar Soorya; Thacheril Sukumaran Swapna; Kalluvettankuzhy Krishnan Nair Sabu
Journal of Tropical Life Science Vol. 12 No. 3 (2022)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.12.03.15

Abstract

One of the most important divisions in the plant kingdom is the monocotyledon division of angiosperms. More than 60,000 monocot spp. have been identified, the majority of which are economically important, such as the Poaceae, Orchidaceae, Arecaceae, Liliaceae, and certain other families. The involvement of the ABCDE model of floral organ determination during flower development is a growing area of research in the field of molecular biology due to the diversity in the floral morphology of monocots. The MADS-box gene family is a large molecular transcript family that helps identify specific proteins involved in floral development. It is classified into several classes based on its function. The review aimed to evaluate the significance of  ABCDE genes for floral development and subsequent organ identification, which have been discovered in a range of monocot plants, as well as the functions of these genes in determining the sex of dioecious plants. We sought to summarise the MADS-box gene responsible for flower initiation and floral whorl differentiation reported in economically valuable monocotyledonous plants.
The Phytochemical Constituents, Antioxidant and Antidiabetic Efficacies of the Crude Extract and Fractions of Ethulia conyzoides Leaves: Crude Extract and Fractions of Ethulia conyzoides Leaves Helen Omasan Okotie; Tayo Micheal Anjuwon; Oluwafemi Abiodun Adepoju; Ijeoma Okolo; Gilead E. Forcardos; Dorcas Bolanle James
Journal of Tropical Life Science Vol. 12 No. 3 (2022)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.12.03.05

Abstract

Ethulia conyzoides is a plant traditionally used in managing diabetes in Nigeria. Unfortunately, its antidiabetic potential has not been scientifically examined. The research investigated the phytochemical constituents, in vitro antioxidant and antidiabetic efficacies of Ethulia conyzoides leaves extract. Seventy percent (70%) methanol extraction of E. conyzoides leaves was done to obtain its crude extract and then was partitioned with n-hexane and ethyl acetate to obtain three fractions (n-hexane, ethylacetate and residual aqueous). Then, they were subjected to various phytochemistry investigations: 1,1-diphenyl 2-picryl hydrazyl (DPPH) radical scavenging activity assay and in vivo antidiabetic effects in mice. The fasting blood glucose (FBG) levels, weight change, feed and fluid intakes were determined using standard procedures. Phyto-profiles tests for the extract and its fractions revealed the presence of phenolics, tannins, cardiac glycosides, saponins and alkaloids. The result showed that residual aqueous fraction had the nearest inhibitory concentration (IC50) of 0.011µg/ml to the standard ascorbic acid with 0.010µg/ml when compared with other extract and fractions. There were substantial (p<0.05) rise in fluid and feed intakes and serum level of FBG in the type 2 diabetic mice. Treatment of the mice using 100 mg/kg b.w. residual aqueous fraction for 21 days significantly (p<0.05) reduced the fluid intake, feed intake and FBG and statistically (p<0.05) improved the body weight. This study revealed that the residual aqueous fraction of Ethulia conyzoides have antioxidant and antidiabetic activities against induced type 2 diabetic mice.
In Silico Screening of Syzygium myrtifolium Flavonoid Compoinds as Anti-bacterial Activity: In Silico Screening of Syzygium myrtifolium Flavonoid Compounds Nelsy Dian Permatasari; Jatmiko Eko Witoyo; Masruri; Sudarminto Setyo Yuwono; Simon Bambang Widjanarko
Journal of Tropical Life Science Vol. 12 No. 3 (2022)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.12.03.02

Abstract

Bacterial infection and antibiotic resistance are popular issues nowadays. Several pre[1]vious reports performed antibacterial screening activities involving natural herbs and synthetic drugs. Alanine racemase and transglycosylase are essential proteins for peptidoglycan membrane synthesis in bacteria and an alternative target for antibacterial performance. This study identified six flavonoid compounds in Syzygium myrtifolium to perform the antibacterial activity. In silico study was conducted for modelling flavonoids – protein complexes. Five flavonoids from S. myrtifolium were taken out of he canonical smiles from the PubChem database and modelled three-dimensional structure using ChemDraw and molView. Targeted protein, alanine racemase and transglycosylase were downloaded from Protein Data Bank with ID 4WR3 and 1SLY. Ligands and proteins were interacted by Molegro virtual Docker 5.0 and visualized by Discovery studio version 21.1.1. Five flavonoids showed inhibition with alanine racemase and transglycosylase in the same active sites of control and sodium benzo[1]ate. According to the binding energy, calopiptin performed the lowest binding energy value in alanine racemase complexes, while 2-Propanone, 1,3-bis(5-nitro-2-furanyl) showed the lowest value of four other flavonoids at transglycosylase complexes. The type of interactions were electrostatic, hydrogen bonds, hydrophobic interactions and unfavorable ones. Low binding energy and varied interaction types indicated tight of ligand-protein interaction. In summary, five flavonoids inhibited alanine racemase and transglycosylase, and the peptidoglycane membrane synthesis in bacteria might be inferred.
Morphological characteristic, growth behavior, and cultivation of Luffa acutangula in tropical urban ecosystem: Luffa acutangula in tropical urban ecosystem Benyamin Lakitan; Fitra Fadhila Rizar; Strayker Ali Muda
Journal of Tropical Life Science Vol. 12 No. 3 (2022)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.12.03.10

Abstract

Ridge gourd (Luffa acutangula) is a climbing vegetable that produces edible fruits. Young fruits are harvested when the cotyledons have not yet formed. This study covered morphological characteristics, growth behavior, and cultivation practices suitable for increasing the production of the ridge gourd in the urban ecosystem. Results of observation revealed the heart-shape leaf of the ridge gourd was very uniform and the leaf surface was flat so that their leaf area could be accurately estimated using leaf length and/or width (R2 > 0.97), yet leaf thickness was not a reliable predictor for the leaf area (R2 < 0.34). The length of the petioles was not correlated with the leaf blade area. Single leaves, multiple tendrils, bunches of male flowers and/or single female flowers, and one branch could be formed at each stem node. Water content in leaf blade was lower than in the petiole. This phenomenon is related to water favor loss due to transpiration activity. Nevertheless, the total conserved water within the leaf blade was 6.26 times more than that within the petiole. The process of fruit enlargement followed the Sigmoid curve. The upper-end curve flattened 10 days after the female flower bloomed. Moreover, at 10 days, cotyledon has not yet formed. Based on the leaf SPAD value, by time the fruit began to enlarge, 4-5 leaves at the stem base were instigated to show symptoms of senescence. Ridge gourd fruit fresh weight can be best estimated using the length x diameter as the predictor.  
Effects of Various Agroecosystem Landscape on Arthropod Diversity: A Study Case in Kemiri Village, Jember, Indonesia: Effects Agroecosystem Landscape on Arthropod Diversity Agung Sih Kurnianto; Nilasari Dewi; Ahmad Ilham Tanzil; Wildan Muhlison; Nur Laila Magvira; Luhur Septiadi
Journal of Tropical Life Science Vol. 12 No. 3 (2022)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.12.03.14

Abstract

Agroecosystem landscapes have been studied extensively and it is known that there is  a relationship between the spatial structure and the ecological processes. The composition of arthropods in the agroecosystem shows population differences that are closely related to the location. This study aims to isolate and analyze the interactions  of arthropods and landscape structures and features of different agroecosystems  landscapes in Kemiri, Jember, Indonesia. The plot method (20x20 m and 1x1 m dimension) was carried out to observe seedling, sapling, and tree (seedling h = 0-1.5  m, sapling h ≥ 1.5 m, tree D > 20 cm). The trees' species name, distance, number, and  DBH were collected. Arthropods were sampled using PFT and SN methods. A vial  (d=5 cm) was used for PFT, and SN was applied at a distance of 1x10 meters with 3  repetitions. Plants with the role of weeds in monoculture dominate (TA=45). Drosophilidae is the most recorded family in monoculture. Polyculture and agroforestry systems increased the diversity of arthropods in the vegetation, and Formicidae predominated by PFT (TA=28% and 81%, respectively). PCA shows the role of detrivores is  mostly found in agroforestry, and herbivores dominate the monoculture. CCA shows that detrivore association in agroforestry is influenced by humidity, and herbivores  are particularly interested in monoculture systems that provide high light, temperature, and wind intensity.

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