首页|The production of broad-spectrum antibiotics from phytopathogen Epicoccum sorghinum by culturing in host edible mushroom Thelephora ganbajun extract

The production of broad-spectrum antibiotics from phytopathogen Epicoccum sorghinum by culturing in host edible mushroom Thelephora ganbajun extract

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? 2022 Elsevier LtdMetabolism of special endophytes and phytopathogens can be induced by the symbiotic interactions with the host. A phytopathogen Epicoccum sorghinum cultured in host mushroom Thelephora ganbajun medium exhibited different metabolites compared with that of ordinary medium. An unprecedented scaffold possessing the same substructure as perylenequinone mycotoxin, a first methyl rearrangement product of phytotoxin, epoxydon 6-methylsalicylate ester, three undescribed compounds, and an undescribed natural product were isolated from E. sorghinum cultured in T. ganbajun. Episorin A and epicosorin A were produced from E. sorghinum induced by culturing in host medium. Episorin A was the first example of perylenequinone analogue in the natural products. These induced compounds and other metabolites showed notable antibiosis against endogenous fungi, and insect existing in mushroom. Induced episorin A showed significant inhibitory effects on nitric oxide production in LPS-activated macrophages, and anti-acetylcholinesterase with the IC50 at 5.40 ± 0.25 μM, and 4.32 μM, respectively, and cytotoxicity against HL-60, A-549, SMMC-7721, MCF-7 and SW480 with IC50 at 14.21 ± 0.53, 17.93 ± 0.22, 18.17 ± 0.63, 28.36 ± 0.43, and 18.20 ± 1.03 μM.

Broad-spectrum antibiosisDidymellaceaeEpicoccum sorghinumInteractionMetaboliteThelephora ganbajunThelephoraceae

Wang C.-F.、Yang X.-Q.、Shi W.-Z.、Long X.、Su S.、Cen R.-H.、Yang Y.-B.、Ding Z.-T.

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Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province Key Laboratory of Medicinal Chemistry for Natural Resource Ministry Education and Yunnan Province School of Chemical Science and Technology Yunnan Univer

2022

Phytochemistry

Phytochemistry

CCR
ISSN:0031-9422
年,卷(期):2022.200
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