Abstract
Microorganisms are regarded as a sustainable source of biologically active molecules. Among them, Trichoderma spp. have been an attractive source of biological compounds. However, the study of marine-derived Trichoderma has developed slowly because of the difficulty in isolating the fungi. In our study, 30 strains of marine-derived Trichoderma were identified through the translation elongation factor 1-alpha (EF1α) sequences, and their biological activities, such as antioxidant activity by ABTS and DPPH assays, antifungal activity against Asteromyces cruciatus and Lindra thalassiae, and tyrosinase inhibition activity, were investigated. As a result, the 30 marine Trichoderma species were classified into 21 taxa, including three new species candidates. Three strains of T. asperellum showed the highest ABTS radical scavenging activity and antifungal activity. T. bissettii SFC20170821-M05 and T. guizhouense SFC20180619-M23 showed notable DPPH radical scavenging activity and tyrosinase inhibition activity, respectively. This study showed the potential of marine-derived Trichoderma as a source of bioactive compounds.
Highlights
In a specific environment, biodiversity is the most essential information for sustainable development and is important in discovering biological resources [1,2,3,4,5,6]
Trichoderma asperellum SFC20160907-M21, SFC20180619-M22, and SFC20180619-M24 showed over 70% ABTS radical scavenging activity, and T. bissettii SFC20170821-M05 and T. longibrachiatum SFC20171019-M03 exhibited over 70% DPPH radical scavenging activity (Table 2)
We investigated the diversity of marine-derived Trichoderma spp. and provided reliable DNA information of 30 marine Trichoderma species isolated in South Korea as well as their exploitable biological activities
Summary
Biodiversity is the most essential information for sustainable development and is important in discovering biological resources [1,2,3,4,5,6]. A total of 200 million microorganisms in the ocean covering 71% of the surface of the earth have been presumed, the exact number of microorganisms is still open to debate [19,20]. For this reason, marine organisms, especially microorganisms, have attracted the attention of the pharmaceutical and cosmetic industries as a new reservoir of novel natural compounds [17,20]
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