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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.
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Articles 16 Documents
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Search results for , issue "Vol. 13 No. 3 (2023)" : 16 Documents clear
A Novel System for the Production of the Bioactive N-alkylamide ‘Spilanthol’ Through Somatic Embryogenesis in Acmella ciliata Kunth (Cass.): Production of the Bioactive N-alkylamide ‘Spilanthol’ in Acmella ciliata S NeethuMohan; AS Hemanthakumar; TS Preetha
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.05

Abstract

Acmella ciliata Kunth (Cass.), a medicinally important plant in the family Asteraceae, has high commercial value because of its traditional phytomedicinal uses. The plant contains many phytochemicals like alkyl amides, alkaloids, tannins, saponins and flavonoids accountable for most of its pharmacological applications. The study presented here reports the callus culture and somatic embryogenesis of this plant thereby raising a novel system for the subsequent production of the N-alkyl amide ‘spilanthol’, the valuable secondary metabolite presents in it. Murashige and Skoog (MS) medium supplemented with auxins either alone or in combination with cytokinins were used for the induction and maturation of somatic embryos. MS medium supplemented with 2,4-D (0.5, 1.0 and 2.0 mg.L-1) produced black friable callus whereas, 1.0 mg.L-1 NAA in combination with 0.5 mg.L-1 BA induced white, slightly purple coloured friable callus which on further subculture to fresh medium induced somatic embryos that germinated into plantlets upon transfer to MS basal medium. The mode of regeneration via somatic embryogenesis was confirmed by histological analysis through free-hand sectioning and stereomicroscopic observation. The plantlets raised through somatic embryogenesis after a short hardening period, were found to acclimatise in the field at 83.33% efficiency and exhibited genetic uniformity with 96.6% similarity in the ISSR analysis. HPLC analysis of in vitro raised embryogenic callus showed 239.512 µg.g-1 spilanthol content which was comparatively higher than the mother plants (92.19 µg.g-1). The bioproduction of the N-alkylamide ‘spilanthol’ through embryogenic callus can be extended for the scale-up production of this bioactive compound using bioreactor technology for the formulation of phytodrugs.
Morpho-Anatomical, Ex-situ Conservation and Haemolytic Activity of Pentaphragma grandiflorum Kurz.: Morpho-anatomy, Ex-situ Conservation and Haemolytic Activity of Pentaphragma grandiflorum Kurz Victor Amoroso; Cristine Mea Aser; Lalaine Grace M. Maghanoy
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.04

Abstract

Pentaphragma grandiflorum Kurz. is one of the five (5) species of Pentaphragma that is found in the Philippines. It is an edible flowering plant consumed as a vegetables and utilized for its medicinal value by the locals. It is categorized as one of the Other Threatened Species with a high economic value. Despite the many uses of P. grandiflorum, there is still inadequate information on its morpho-anatomical characteristics conservation and lack of scientific evidence to support the claim of its safe utilization by the locals. The collected wildlings of the P. grandiflorum were nurtured and monitored in the canopy greenhouse of Central Mindanao University, Philippines. The safe utilization of the leaf extract of P. grandiflorum was assessed through a haemolytic assay. The following are the morpho-anatomical features described in this study: fleshy erect shrub with primary and aerial roots; stem puberulous at a young stage and glabrous upon maturity with dictyostele type of stele; petiole fleshy, puberulous, dissected vascular bundle with dictyostele arrangement; leaf finely puberulous adaxial and glabrous abaxial, dictyostele arrangement, midrib amphibrical arrangement, with tri- to tetracytic stomates; inflorescence arises singly in axil, bisexual, elongated, with yellow and/or purple corolla. Fifty-three out of 130 wildlings survived and abundantly produced bisexual flowers in the succeeding months. The 1 mg/mL concentration of ethanolic and methanolic leaf extracts of P. grandiflorum were found to have an average haemolysis percentage of 0.32 ± 6.78 and 0.45 ± 0.65, respectively. The result of the haemolysis assay revealed that the ethanolic and methanolic leaf extract of P. grandiflorum is safe to utilize and do not pose any toxic effects to humans.
In-Silico Molecular Phylogeny of Philippine Myxomycetes using 18S rRNA and small subunit rRNA (SSU) Gene Sequences: Molecular Phylogeny of Myxomycetes using 18S rRNA and SSU Sequences in the Philippines Christian Joseph Ong; Richard Clemente; Oliver Alaijos; Lady Janine Pascual; Russell Neil Aguilar; Raizza Desacula
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.01

Abstract

Myxomycetes, commonly called plasmodial slime molds, are eukaryotic organisms usually thriving on terrestrial ecosystems, manifesting attributes of fungi and protists. The current taxonomy of myxomycetes poses serious problems and does not clearly reflect the evolutionary relationships of this group. The literature on myxomycetes in the Philippines has primarily focused on species identification, ecological and diversity studies. However, no attempts have been made yet to elucidate the evolutionary relationships of this class using molecular evidence. The use of 18S rRNA and small subunit rRNA (SSU) sequences in this study to construct phylogenies has revealed that certain taxa, traditionally considered monophyletic, exhibit inconsistencies that warrant further investigation. However, the molecular evidence that supports the division of myxomycetes into two distinct groupings (Lucisporidia and Columellidia) according to spore color remains consistent with the constructed phylogeny using 18S rRNA gene sequences. Therefore, the present study aims to assess Philippine myxomycetes' diversity and evolutionary relationships. In addition, the study aims to compare the conventional taxonomy and molecular phylogeny of myxomycetes species in the Philippines using two molecular barcode markers - the 18S rRNA and SSU sequences. The study demonstrated that it is not always possible for morphology to agree with molecular data. On the other hand, molecular data can be more beneficial in reconstructing phylogenies but only to a certain extent and should be further evaluated.
Nutritional Properties Evaluation of Blowfly Larvae from Fish and Chicken Wastes for Asian Sea Bass Feed Formulation Application: Nutritional Properties Evaluation of Blowfly Larvae Nurazira Anuar; Nur Faizah Moidu Omar; Zainoha Zakaria; Aemi Syazwani Abdul Keyon; Nor Wajihan Muda; Mohammed Suhaimee Abd. Manaf; Naji Arafat Mahat
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.02

Abstract

This present research characterized the proximate nutrient, fatty acids and amino acids compositions of the wild third instar blowfly larvae collected from fish and chicken wastes as well as its mixture, in view of aquaculture feeding for Asian sea bass (Lates calcarifer). Analyses of crude protein, crude lipids, crude fiber, ash, carbohydrates, amino as well as fatty acids were performed. Results revealed that the larvae that fed on the mixed substrates (chicken and fish, 50:50 ratio) had significantly the highest nutritional values (51.47 ± 0.32% of crude protein, 29.4 ± 1.47% of crude fat, 4.81 ± 0.83% of crude fiber, 4.85 ± 0.01% of ash and 12.71 ± 1.67% of carbohydrate) for formulating feeds for Asian sea bass when compared with that of chicken and fish wastes alone (P < 0.05). Similarly, significantly higher percentages of fatty acids (DHA and EPA) and amino acids (Arg, Lys, Met, Trp, His, Val, Ile, Leu and Phe) were observed in the larvae from mixed-substrates when compared with that of the remaining two substrates (P < 0.05). The findings supported the utilization of blowfly larvae harvested on mixed substrate as a possible candidate of nutrients for Asian sea bass feed formulations
Antibacterial Activities of Fungal Endophytes from Philippine Endemic Plant Dillenia philippinensis: Antibacterial Activities of Fungal Endophytes from Dillenia philippinensis Seraphim Marie Española; Maria Criselda Resurreccion; Llewelyn Espiritu
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.06

Abstract

Fungal endophytes represent a group of microorganisms that establish symbiotic associations with plants and hold significant ecological importance. Their ability to produce a diverse array of biologically active secondary metabolites has garnered considerable interest in the search for novel drug leads. In this study a total of 33 fungal endophytes were isolated from leaf specimens of the Philippine endemic tree Dillenia philippinensis (Rolfe). The morphological characterization of the fungal isolates revealed their taxonomic affiliation with the following eight genera: Alternaria sp., Aspergillus sp., Geotrichum sp., Guignardia sp., Nigrospora sp., Paecilomyces sp., Pestalotiopsis sp., and Phialophora sp. A representative set of 22 fungal endophyte isolates was selected from the pool of isolates and subjected to large-scale cultivation, followed by extraction of their bioactive metabolites through liquid-submerged fermentation. The resulting crude extracts were evaluated for their inhibitory potential against two Gram-positive bacteria, namely Staphylococcus aureus and Methicillin-resistant Staphylococcus aureus (MRSA); and two Gram-negative bacteria, namely Escherichia coli and Multi-drug resistant Pseudomonas aeruginosa (MRPA), using the disc diffusion assay. The results indicate that the crude extracts obtained from endophytic fungi colonizing D. philippinensis represent a promising source of bioactive metabolites that exhibit noteworthy inhibitory activity against S. aureus, E. coli, and MRSA, with an effective concentration of 10 mg/mL. This study demonstrates that the fungal endophytes associated with Dillenia philippinensis foliage represent a rich source of bioactive metabolites with significant inhibitory activity against Gram-positive and Gram-negative bacteria. These lead to exploring the potential of these fungal endophytes as a viable source of novel therapeutics.
A Comparison Study of the Influence of Caffeic Acid Phenethyl Ester and Mitoxantrone in Experimental Autoimmune Encephalomyelitis Balb/C Mice Model: Comparison Effect Cape and Mitoxantrone Amin Alnawajha; Agustina Tri Endharti; Sunarto Santoso; Dewi Santosaningsih; Irawan Satriotomo
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.03

Abstract

A common neurodegenerative condition that still presents clinical challenges is Multiple Sclerosis (MS). Effective multiple sclerosis treatments are sorely needed in clinical settings. Experimental Autoimmune Encephalomyelitis (EAE) is an animal model of multiple sclerosis, a T-cell-mediated disease. Active T-cells differentiate into the Th9 and Th17 subsets, which are controlled by NF-kB and produce the proinflammatory cytokines IL9 and IL17. Because these cytokines are crucial to the pathophysiology of EAE, they have been used as targets for MS therapy. Caffeic acid phenethyl ester (CAPE) is an active ingredient of propolis that has been shown to have immunomodulatory and anti-inflammatory activities. Mitoxantrone is a synthetic antineoplastic agent and cytotoxic immunosuppressive effect used to treat MS. The study aimed to determine whether the two medications have superior efficacy and effect in the treatment of EAE mouse model MS compared to the other. After inducing EAE in mice, CAPE and mitoxantrone were administered to evaluate this therapeutic effectiveness. ELISA was used to measure IL9, IL17 levels and the activity of NF-kBp56. H&E was used to evaluate cell infiltration T lymphocytes for histopathology of spinal cord tissue. Molecular docking was performed to predict the interaction between CAPE and a cytokine. We found that CAPE has a sufficient effect of reducing the level of IL9, IL17, active NF-kBp56, and inflammatory cell infiltration T-lymphocytes in all groups of mice EAE treated with CAPE. In contrast, mitoxantrone reduced cytokines and cell infiltration, so EAE mice treated with both compounds were observed more improvement than other groups. Based on our findings, two medications demonstrated the same efficacy and effect in EAE mice model MS., whereas CAPE did not statistically reach a significant value. While the combination of two medications has the optimal effect.
Ethnomedicinal Plants Used by the Pnar Tribes of Meghalaya for the Treat-ment of Diabetes Mellitus: Ethnomedicinal Plants Used by the Pnar Tribes of Meghalaya for the Treatment of Diabetes Mellitus Fedalia Bamon; Lalnundanga
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.16

Abstract

Diabetes mellitus is the world’s major public health issue and has been dubbed the “Silent Epidemic” of the twenty-first century. This is the first ethnobotanical exploration to document the folk medicinal usage of plants with therapeutic antidiabetic properties by the Pnar tribes of East Jaintia Hills, Meghalaya. Forty-one practitioners and knowledgeable people were interviewed using a semi-structured questionnaire. Field inventories were then conducted to collect plant material for botanical identification. In this study, 51 plant species belonging to 34 families and 45 genera have been identified. This study indicates that herbs were the most prevalent living form used (N = 23) for the treatment. Rhus semialata is one of the most frequently cited medicinal plants, with a Relative Frequency of Citation (RFC) of 0.73. Moreover, the details about the phytochemicals and the pharmacological activities of identified plant species have been reviewed and disclosed. Agricultural expansion, deforestation, urbanization, and unscientific exploitation of the forests were cited most when respondents were asked about the threat to medicinal plants. Of the 51 plant species, 12 are included on the IUCN Red List. Therefore, this documentation of indigenous plants would create awareness about the importance of medicinal plants and their conservation and protection.
Effect of Adenine Sulphate on In Vitro Micropropagation of Acacia holosericea A. Cunn. ex G. Don Leaflets and Leaf Rachis Explants: Effect of Adenine Sulphate on In Vitro Micropropagation of Acacia holosericea Anita Narang; Anupama Shukla; Surinder Kaur
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.08

Abstract

In this study, different explant types (leaflets and leaf rachis) excised from 15-day-old seedlings of Acacia holosericea A. Cunn ex G. Don differentiated into multiple shoots when grown on B5 medium supplemented with various growth regulators. Results revealed that the shoots differentiated directly and indirectly in all the cytokinins [Benzyl adenine (BA); Kinetin (Kn), 2-isopentenyl adenine (2iP); Zeatin (ZN)] adjuvanted media. The ZN-supplemented B5 medium supported maximum multiple-shoot differentiation (3.2 ± 0.8 shoots per explant). However, with the adjuvant (AdS) present in the same ZN-supplemented B5 medium, the explants produced a higher number of shoots (7.0 ± 3.8 per explant). Likewise, the best leaflet regeneration medium was observed for  B5 medium supplemented with 2.5 mg/L ZN and 200 mg/L of AdS. The B5 medium with the lower amount of ZN (1.5 mg/L) and 50 mg/L of AdS produced a maximum number of shoots (6.3 ± 3.8 shoots per explant) in the leaf rachis explants. Nearly 100% of the in vitro B5 basal medium-grown shoots developed roots directly at their base, consequently leading to their successful transfer to the soil.
Regular Mechanical Stimuli Enhanced Tolerance to Salinity Stress in Glycine max L. Seedlings: Effect of Touch on Soybean Juhika Patel; Susy Albert; Ravinayak Patlavath
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.11

Abstract

Regular touch treatment leads to plant adaptations that enhances mechanical strength. In many crop plants these adaptations result in cross-tolerance to biotic stress caused by bacterial or fungal infection and abiotic stress conditions like salinity or drought. In present study, we have explored the effect of mechanical stress on the growth of Glycine max (soybean) seedlings and studied its effect on tolerance to salinity stress. Regular mechanical stress given in the form of touch suppressed overall growth of the soybean seedlings. Touch pre-treated seedlings were further treated with sodium chloride to test for its tolerance to salinity. Upon salt treatment, we observed comparatively higher survival rate and more growth in the seedlings that received regular mechanical stress during early growth stages. The adaptations to mechanical stress given at the early-stage of growth may have led to the enhanced tolerance to salinity stress experienced in later growth stage
Physiological Response and Aflatoxin Contamination in Maize (Zea Mays L.) Grown Under Varying Water-Deficit Levels in a Semi-Arid Region: Physiological Response and Aflatoxin Contamination in Maize halgoord Hassan; Aram Abbas Muhammed
Journal of Tropical Life Science Vol. 13 No. 3 (2023)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.13.03.07

Abstract

The present study explored the effects of water deficit levels at different growth stages of maize (Zea mays L.) cultivated in semi-arid conditions with regard to physiological responses and aflatoxin contamination. The physiological growth changes of maize hybrids were gauged for parameters viz. relative water content (RWC, %), root-shoot ratio (R/S), and specific leaf area (SLA). At the same time, the study used HELICA total Aflatoxin Assay for estimating aflatoxin contamination in the produced maize kernel. Results revealed the third level of water-deficit, which extended to the dent stage, led to lower RWC%, and higher (R/S), alongside lower (SLA). Although the aflatoxin level was estimated to be 18.5 ppb in the maize kernels (FDA limit = 20 ppb), it was apparent that cultivation in a semi-arid condition runs the risk of aflatoxin contamination, likely due to water shortage and high growing temperatures.

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