Pentaene macrolides AB023a and takanawaene C produced by Streptomyces xanthocidicus strain S3 for controlling pepper anthracnose

Authors
Jeon, Byeong JunKang, Ji EunKim, Jeong DoKim, Beom Seok
Issue Date
2023-08
Publisher
한국응용생명화학회
Citation
Applied Biological Chemistry, v.66, no.1
Abstract
A natural product library consisting of the culture extracts of 814 actinomycete strains was screened for antifungal compounds that disrupt the cell integrity of plant pathogenic fungi using an adenylate kinase (AK) assay system. The culture extract of Streptomyces xanthocidicus strain S3 exhibited high AK activity against various plant pathogens. The active ingredients, AT-1 and AT-2, were isolated from the culture extract using a series of chromatographic procedures. Based on MS, UV, and NMR spectrometric analyses, the structures of AT-1 and AT-2 were determined as the pentaene macrolides, AB023a and takanawaene C. AB023a and takanawaene C displayed broad-spectrum antifungal activity against Aspergillus oryzae, Botrytis cinerea, Colletotrichum coccodes, C. gloeosporioides, C. orbiculare, Cylindrocarpon destructans, and Fusarium oxysporum f. sp. lycopersici, showing minimum inhibitory concentrations of 1-32 & mu;g/mL. Treatment of AB023a and takanawaene C successfully inhibited anthracnose development on pepper plants in a concentration-dependent manner without phytotoxicity. The disease control efficacy of both compounds was comparable to that of the commercial fungicide chlorothalonil. Collectively, these results suggest that the polyene macrolides produced by S. xanthocidicus strain S3 can be used as natural fungicides for plant disease control.
Keywords
POLYENE ANTIBIOTICS; NATURAL-PRODUCTS; SP. K99-5278; FUNGICHROMIN; FERMENTATION; DISCOVERY; TAXONOMY; Streptomyces xanthocidicus; Colletotrichum coccodes; Pentaene macrolide; Pepper anthracnose; Plant disease control agent
ISSN
2468-0834
URI
https://pubs.kist.re.kr/handle/201004/113399
DOI
10.1186/s13765-023-00813-2
Appears in Collections:
KIST Article > 2023
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE