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All Journal Biogenesis: Jurnal Ilmiah Biologi Journal of Biodiversity and Biotechnology
Ari Susilowati
Sebelas Maret University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Profile of microbial community of organic and conventional rice field using metagenomic analysis Arum Asri Trisnastuti; Edi Purwanto; Ari Susilowati
Biogenesis: Jurnal Ilmiah Biologi Vol 9 No 1 (2021)
Publisher : Department of Biology, Faculty of Sci and Tech, Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/bio.v9i1.14228

Abstract

Organic farming can increase the diversity of soil bacterial. This research aimed to compare the profile of microbial community of organic and conventional rice fields in early (0 Day After Planting/DAP), mid (15 DAP), and late (45 DAP) fertilizer application period. The total DNA genome from the soil sample was extracted then analyzed metagenomically using Next Generation Sequencing (NGS). There was nine genus of bacteria found in high relative abundance, 95.28%, while 4.72% included in Domain of Archaea (genus Methanosaeta). Phylum of Firmicutes (genus Clostridium has 24.50% relative abundance, Bacillus 11.90%, Lactobacillus 9.69%); Proteobacteria (genus Defluviicoccus 12.10%, Buchnera 18.46%, Rosenbergiella 2.46%); and Actinobacteria (genus Nocardioides 12.21%, and Streptomyces 3.96%). Meanwhile, the average plant height of organic rice fields was shorter than conventional rice fields got directly measured coincided with soil sampled. Based on alpha and beta diversity analysis, the highest community diversity and abundance were found in organic rice field soil samples taken at 45 DAP, i.e., at the end of the fertilizer application period. However, in both organic and conventional rice field soils, there was almost no significant difference in the bacterial community, so it impacts that organic and conventional systems do not make a real difference in the total N, P available, CEC, and pH values. It makes a significant difference in organic C and organic matters.
ANTIBACTERIAL ACTIVITY AND TLC-BIOTOGRAPHY PROFILE OF THE ETHYL ACETAT FRACTION OF ASIAN PIGEONWINGS FLOWER (Clitoria ternatea) AGAINST Escherichia coli Ari Susilowati; Rizkya Suhardo Putri; Widya Mudyantini
Journal of Biodiversity and Biotechnology Vol 2, No 2 (2022)
Publisher : Pusat Penelitian dan Pengembangan Bioteknologi dan Biodiversitas (P3BB) LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jbb.v2i2.66769

Abstract

Infectious diseases are diseases caused by the presence of microorganisms that enter and develop in the body, causing several clinical symptoms and signs. One of the infectious diseases is diarrhea caused by Escherichia coli. There are many potential herbal plants as alternative antibacterial antibiotics, one of which comes from the Asian pigeonwings flower (Clitoria ternatea). This study aims to determine the antibacterial activity of the ethyl acetate fraction of pigeonwings flower, phytochemical compounds and its TLC-bioautography profile. The antibacterial compound of pigeonwings flower was extracted by maceration using ethanol and then fractionated by ethyl acetate and made solutions with concentrations of 5, 10, 20, and 40%, respectively. The experiment was carried out with 3 replications using the well diffusion method and followed by TLC-bioautography to determine the TLC-bioautography profile. Phytochemical compounds of pigeonwings flower were determined by thin layer chromatography (TLC). Antibacterial activity data were analyzed using the One Way ANOVA and continued with the Tukey HSD 5% through SPSS. The ethyl acetate fraction of pigeonwings flower had the best antibacterial activity at a concentration of 40% with an inhibition zone diameter of 11.54 mm. The diameter of the inhibition zone showed significantly different in each concentration and it can be said that the ethyl acetate fraction of pigeonwings flower was able to inhibit the growth of E. coli. The phytochemical compounds contained in the ethyl acetate fraction of pigeonwings flower are flavonoids and alkaloids with flavonoids being the most active compounds in inhibiting the growth of E. coli.
Co-Authors Arum Asri Trisnastuti Edi Purwanto Rizkya Suhardo Putri Widya Mudyantini