Three new azaphilone phytotoxins, named nigcollins F–H, were isolated from the coculture of the phytopathogens Nigrospora oryzae and Colletotrichum gloeosporioides. Phytotoxins and other metabolites also indicated antifungal activity against phytopathogens, endophytes, and entomopathogen. Interestingly, the production of phytotoxins by N. oryzae and its phytopathogenicity can be eliminated by coculture the phytopathogen N. oryzae with the host plant Dendrobium officinale. The host D. officinale could discriminate phytopathogens and probiotics by exhibiting selective antipathogen activity.
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Acknowledgment
This project was supported by the National Natural Science Foundation of China (81560571, 81660582, and 81960640), the grants of the Yunling Scholars of Yunnan Province, the Donglu Scholars of Yunnan University, the Program for Changjiang Scholars and Innovative Research Team in University (IRT-17R94), and Yunnan University′s Research Innovation Fund for Graduate Students in 2020.
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Published in Khimiya Prirodnykh Soedinenii, No. 5, September–October, 2022, pp. 716–719.
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Wu, YM., Yang, XQ., Li, SY. et al. Three New Azaphilone Phytotoxins from Coculture of the Phytopathogens Nigrospora oryzae and Colletotrichum gloeosporioides and Antifungal Activities Against N. oryzae. Chem Nat Compd 58, 848–852 (2022). https://doi.org/10.1007/s10600-022-03814-7
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DOI: https://doi.org/10.1007/s10600-022-03814-7