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All Journal Biodiversitas Journal of Biological Diversity
AGUS TRIANTO
Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro. Jl. Prof. H. Soedarto, S.H., Tembalang, Semarang 50275, Central Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Short Communication: Antagonistic activity of bacteria isolated from coral Acropora sp of Karimunjawa Islands, Indonesia against Acroporid White Syndrome AGUS SABDONO; AGUS TRIANTO; OCKY KARNA RADJASA; DIAH PERMATA WIJAYANTI
Biodiversitas Journal of Biological Diversity Vol. 20 No. 5 (2019)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d200526

Abstract

Abstract. Sabdono A, Trianto A, Radjasa OK, Wijayanti DP. 2019. Antagonistic activity of bacteria isolated from coral Acropora sp of Karimunjawa Islands, Indonesia against Acroporid White Syndrome. Biodiversitas 20: 1350-1355. Acroporid White Syndrome (AWS) disease, causing coral death and mortality, has come out as a serious threat to coral reefs in the Karimunjawa Islands, Java Sea. In the present study, the bacterial community associated with the Acroporid were assessed for their antagonistic activity against bacteria associated with AWS disease. A culture collection of 43 bacteria associated with coral Acroporid was established by plating on Zobell’s 2214E. Isolates were screened using the overlay method. The results showed that five isolates (11.62 %) were able to inhibit the growth of the AWS isolates. These isolates were tested further for their consistency of antagonistic activity by using disc-agar diffused method. Based on their consistency, AU5 isolate was selected for study at advance. Polyphasic and phylogenetic analysis were used to characterized AU5 isolate. The DNA sequence analyses demonstrated that this bacterial isolate affiliated with Firmicutes. The AU5 isolate showed high 16S rDNA sequence identity to Virgibacillus salarius strain muzPC213 (99%). The results demonstrated the existence of bacterial coral symbionts with AWS antipathogenic activity on the coral tissue, possibly performing as biocontrol agent to protect the coral Acroporids against AWS outbreaks.
The effect of drying treatment to metabolite profile and cytotoxic potential of Rhizophora apiculata leaves Mada Triandala Sibero; ANGGUN PUSPITARINI SISWANTO; RUDHI PRIBADI; AGUS SABDONO; OCKY KARNA RADJASA; AGUS TRIANTO; EVAN HANSEL FREDERICK; ALDI PRATAMA WIJAYA; DWI HARYANTI; DESY WULAN TRININGSIH; SASTRA JENDRA HAYUNINGRAT; YASUHIRO IGARASHI
Biodiversitas Journal of Biological Diversity Vol. 21 No. 5 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d210546

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Abstract. Sibero MT, Siswanto AP, Pribadi R, Sabdono A, Radjasa OK, Trianto A, Frederick EH, Wijaya AP, Haryanti D, Triningsih DW, Hayuningrat SJ, Igarashi Y. 2020. The effect of drying treatment to metabolite profile and cytotoxic potential of Rhizophora apiculata leaves. Biodiversitas 21: 2180-2187. Coastal communities in Indonesia have utilized Rhizophora spp. leaves as a traditional medicine for many years. The previous studies have succeeded in extracting bioactive compounds from this mangrove after drying treatment, but there is a possibility of the compound decomposition or breakdown. This study aimed to determine the effect of drying treatment on the metabolite profile of R. apiculata leaves which were taken from mangrove forests in Rembang, Central Java. The effect of pre-drying treatment was examined by comparing the metabolites profiles of fresh, oven-dried, and sun-dried leaves crude extracts. Extraction was carried out using maceration method with agitation (110 r.p.m.) for 24 hours in methanol. The metabolite profile was analyzed using high-performance liquid chromatography (HPLC) with diode array detector (DAD) and thin layer chromatography (TLC), while secondary metabolites were studied by phytochemical test. The phytochemical results showed that there were no differences in metabolites in dried and fresh R. apiculata leaves. Crude extract of fresh and oven-dried gave 10 spots on the TLC, while sun-dried crude extract had 9 spots. The one missing spot (Rf value of 0.79) in the sun-dried crude extract might have unstable compounds that are easily degraded or damaged by the sunlight. Moreover, HPLC chromatogram indicated the pre-drying treatment gave alteration to the R. apiculata metabolites that only detected at 400 nm. Cytotoxic assay against P388 murine leukemia cell indicated that oven-dried treatment gave the best anticancer activity with IC50 value of 0.0323 mg/mL. 
Bioactivity of carotenoid produced by soft coral symbiotic microorganisms from Panjang and Karimunjawa Island, Central Java, Indonesia Lia Kusmita; Handung Nuryadi; Prasetyo Abi Widyananto; SAKTI MUCHLISSIN; Agus Sabdono; Agus Trianto; Ocky Karna Radjasa
Biodiversitas Journal of Biological Diversity Vol. 22 No. 2 (2021)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d220226

Abstract

Abstract. Kusmita L, Nuryadi H, Widyananto PA, Muchlissin S, Sabdono A, Trianto A, Radjasa OK. 2021. Bioactivity of carotenoid produced by soft coral symbiotic microorganisms from Panjang and Karimunjawa Island, Central Java, Indonesia. Biodiversitas 22: 732-740. The diversity of soft corals is more varied in waters. One of the characteristics of soft corals is the production of secondary metabolites, i. i.e. carotenoids. Carotenoids are phytonutrients found in the cells of a wide variety of plants, algae, and bacteria as secondary metabolic compounds with antioxidant functions. Carotenoid biosynthesis is strongly influenced by the environment in which the producing organism grows. This study was aimed to uncover the antioxidant and anti-ultraviolet activities of carotenoids produced by soft coral symbiotic microorganisms in the waters surrounding the Panjang and Karimunjawa Islands in the North Java Sea, Indonesia. The parameters observed included water quality, antioxidant activity, and anti-ultraviolet activity. The results indicated that the water quality at Panjang Island did not meet quality standards (including salinity, visibility, dissolved oxygen, ammonia, and nitrate) while that at Karimunjawa did. The diversity of soft corals was more varied at Karimunjawa Island than at Panjang Island. In contrast to the bioactivity, the carotenoid extracts from the Panjang Island soft coral symbiotic microorganisms showed higher activity than those from Karimunjawa Island microorganisms. The highest antioxidant activity was found in the bacterial isolate 19.PP.Sc1.6 from Panjang Island and was identified based on the 16S rRNA gene as Virgibacillus salarius, with 99% similarity.
Co-Authors AGUS SABDONO AGUS SABDONO ALDI PRATAMA WIJAYA ANGGUN PUSPITARINI SISWANTO DESY WULAN TRININGSIH DIAH PERMATA WIJAYANTI DWI HARYANTI EVAN HANSEL FREDERICK Handung Nuryadi Lia Kusmita Mada Triandala Sibero OCKY KARNA RADJASA OCKY KARNA RADJASA Prasetyo Abi Widyananto RUDHI PRIBADI SAKTI MUCHLISSIN SASTRA JENDRA HAYUNINGRAT YASUHIRO IGARASHI