期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 58, 期 2, 页码 828-834出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf903259n
关键词
Pochonia chlamydosporia; aurovertin I; aurovertins; nematodetoxic; root-knot nematode; Panagrellus redivevus
资金
- Major State Basic Research Development Program [2009CB125905]
- National Natural Science Foundation of China [30870083]
- Department of Science and Technology of Yunnan Province [2008CD068]
- 12th Young Academic and Technical Leader Raising Foundation of Yunnan Province [20090051]
Chemical investigation of one fungal strain P. chlamydosporia YMF 1.00613 isolated from root knots of tobacco infected by Meloidogyne incognita led to the isolation and identification of four aurovertin-type metabolites, which include a new compound, aurovertin I (A1), and three known metabolites, aurovertins E, F and D (A2-A4). Their structures were established by spectroscopic studies such as 1D- and 2D-NMR and MS analysis. Aurovertin I (A) is the first natural product with an aurovertin skeleton with one less carbon. Compounds A3 and A4 showed the toxicity to the worms of the free-living nematode Panagrellus redivevus with the LC50 values 88.6 and 41.7 mu g/mL at 48 h, respectively. All four aurovertins did not show obvious inhibitory effects on egg hatch of root knot nematode Meloidogyne incognita. The results suggested that the aurovertin-type metabolites produced by P. chlamydosporia might be one of the pathogenic factors involved in the suppression of nematodes.
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