Actinomycetes isolated from wetland and hill paddy during the warm and cool seasons in Sarawak, east Malaysia

Ann Anni Basik, Holed Juboi, Sunita Sara Gill Shamsul, Jean-Jacques Sanglier, Tiong Chia Yeo

Actinomycetes isolated from wetland and hill paddy during the warm and cool seasons in Sarawak, east Malaysia

Číslo: 4/2019/2020
Periodikum: Journal of Microbiology, Biotechnology and Food Sciences
DOI: 10.15414/jmbfs.2020.9.4.774-780

Klíčová slova: paddy field, actinomycetes, ranking, taxonomic unit

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Anotace: As part of the Natural Product Discovery programme at Sarawak Biodiversity Centre (SBC), our study targeted isolation and evaluation

of actinomycetes diversity from paddy rice fields. Samples from two types of paddy farming system practiced in Sarawak, wet land and
hill paddy, were collected and processed leading to the selection of 578 strains distributed among 24 genera and 10 families. Analysis
using phylogenetic clustering indicated a total of 159 taxonomic units (TU). The taxonomic position and the ranking of the TU allowed
their classification in 4 novel species, 61 putative novel species and 94 known species or species of uncertain position. The high genus
diversity and percentage of novel or putative novel species demonstrate the biodiversity potential of Sarawak ecosystems, even in manmanaged ecosystems.