RONI RIDWAN
Research Center for Biotechnology, Indonesian Institute of Sciences (LIPI), Jalan Raya Bogor Km 46, Bogor 16911Indonesian

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Journal : ANNALES BOGORIENSES

Diversty of Actinomycetes from Soil Samples Collected from Lombok Island, Indonesia Lisdiyanti, Puspita; Tamura, Tomohiko; Ratnakomala, Shanti; Ridwan, Roni; Kartina, Gina; Lestari, Yulin; Katsuhiko, Ando; Widyastuti, Yantyati
ANNALES BOGORIENSES Vol 16, No 1 (2012): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.783 KB) | DOI: 10.1234/52

Abstract

A total of 137 strains of Actinomycetes were isolated from 14 soil samples collected in 3 part of Lombok Island, Indonesia  using  SDS-YE (SY) and Rehydration and Centrifugation  (RC)  isolation methods  and Humic Acic Vitamin (HV) agar as isolation media. All the isolates were identified by morphological characteristic and by analysis of 16S rRNA gene sequence. On the basis of their morphology and 16S rRNA gene sequence, 67% of isolates were belonged  to the Streptomyces Group and 33% of isolates were belonged to the Rare-Actinomycetes (Non-Streptomyces) Group. Nine families and 15 genera were found from the samples. It is indicated the richness of actinomycetes in these area. The genus  Streptomyces  is the most abundant in all soil samples, occupying 67% of all isolates by using SY method; while the genusActinoplanes  is mainly found by using RC as isolation method. Two strains belong to the genus Virgisporangium and Catenulispora that showed taxonomic interest need further study for describing as ne species.   Keywords: Actinomycetes, Streptomyces Group, Non-Streptomyces Group, Diversity
Ecological Study of Rare-Actinomycetes in Soils and Leaf-Litters Lisdiyanti, Puspita; Ratnakomala, Shanti; Ridwan, Roni; Widyastuti, Yantyati; Otoguro, Misa; Katsuhiko, Ando
ANNALES BOGORIENSES Vol 15, No 2 (2011): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (156.626 KB) | DOI: 10.1234/49

Abstract

A total of 268 strains of Actinomycetes were isolated from soil and leaf-litter samples collected in Jambi (Sumatera) and Cibinong (West Java) using three selective isolation methods. All the isolates were identified by morphological characteristic and by analysis of 16S rDNA sequence. On the basis of their morphology and 16S rDNA sequence, 164 isolates were belonged to the Streptomyces Group and 104 isolates were belonged to the Rare-Actinomycetes (Non-Streptomyces) Group. Furthermore, 40% of isolates in Streptomyces Group and 62% of isolates in Non-Streptomyces Group are supposed to be new taxa. It is indicated the richness of Actinomycetes in these two area. The genus Streptomyces is the most abundant in soil samples, occupying 60- 75% of all isolates; while the genus Actinoplanes is mainly found in leaf-litter samples (70%). The use of selective isolation media is important to elucidate the microbial diversity.Key words: Actinomycetes, microbial diversity