UI - Disertasi Membership :: Kembali

UI - Disertasi Membership :: Kembali

Studi Taksonomi Rare Actinobacteria Termofilik dan Penapisan Metabolit Sekunder Baru = Taxonomic Study of Rare Thermophilic Actinobacteria and Screening for Novel Secondary Metabolites

Fitrianingsih; Wellyzar Sjamsuridzal, supervisor; Akira Yokota, co-supervisor; Yasuhiro Igarashi, co-supervisor; Ariyanti Oetari, examiner; Is Helianti, examiner; Shuhei Yabe, examiner; Abinawanto, examiner (Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2022)

 Abstrak

The aims of this study are to provide data regarding the taxonomic study of thermophilic Actinobacteria based on 16S rRNA gene sequences, description, and assessment for secondary metabolite biosynthetic gene clusters (BGCs) in the genome of novel taxa, and its antibacterial activity. Thirty-one isolates of thermophilic Actinobacteria were isolated from soil samples in Cisolok geothermal area, West Java. The 16S rRNA gene sequence-similarity search against all related species was performed using EzTaxon-e database. The sequences of 31 isolates showed similarity to member of family Micromonosporaceae, Nocardiaceae, Pseudonocardiaceae, Streptomycetaceae, Streptosporangiaceae, and Thermomonosporaceae. Six isolates displayed high similarity to genera in the family Pseudonocardiaceae, and most closely related to the genus Thermotunica, T. guangxiensis AG2-7T with similarity values from 94.6 to 95.2%. Phenotypic features and phylogenetic data differentiated strain SL3-2-4T from members of the family Pseudonocardiaceae. Therefore, the strain SL3-2-4T is proposed as a representative of a novel species in a novel genus, Gandjariella thermophila gen. nov., sp. nov. The genome of SL3-2-4T contained 21 antiSMASH-identified secondary metabolite regions harboring BGCs. These BGCs were for polyketide synthase, non-ribosomal peptide synthase, and ribosomally synthesized and post-translationally modified peptide family clusters. Thirteen and five regions displayed low (4–35%) and no similarity with known BGCs for secondary metabolites, respectively. Screening for antibacterial activity showed that strains SL3-2-4T and SL3-2-7 on MM 2 medium solidified with gellan gum at 45°C for 14 days demonstrated inhibitory activity against all Gram-positive, but not Gram-negative bacteria. Strain SL3-2-10 on ISP 3 gellan gum medium incubated for seven-days only active against K. rhizophila NBRC 12078. The results indicated that novel taxa have the potential for the discovery of active secondary metabolites.

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Jenis Koleksi : UI - Disertasi Membership
No. Panggil : D-pdf
Entri utama-Nama orang :
Entri tambahan-Nama orang :
Entri tambahan-Nama badan :
Program Studi :
Subjek :
Penerbitan : Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2022
Bahasa : eng
Sumber Pengatalogan : LibUI eng rda
Tipe Konten : text
Tipe Media : computer
Tipe Carrier : online resource
Deskripsi Fisik : xii, 147 pages: illustration
Naskah Ringkas :
Lembaga Pemilik : Universitas Indonesia
Lokasi : Perpustakaan UI
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No. Panggil No. Barkod Ketersediaan
D-pdf 07-22-08063446 TERSEDIA
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Tidak ada ulasan pada koleksi ini: 20525135
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