Herbicidal activity of Alternaria perpunctulata NBERC_H56 to Digitaria sanguinalis and the secondary metabolites produced by the strain

doi:10.14088/j.cnki.issn0439-8114.2021.24.023

Abstract

Abstract: A pathogenic fungus NBERC_H56 was isolated from the diseased plant of Digitaria sanguinalis, identified as Alternaria perpunctulata, and its fermentation broth had an obvious inhibitory effect on the growth of the seedlings of Digitaria sanguinalis. In order to clarify the active substance basis of NBERC_H56, the secondary metabolites of the strain were studied. The results showed that three compounds were obtained by large-scale fermentation, extraction and preparation via high performance liquid chromatography, and were identified as Curvulin （1）, Alternariol （2） and Zinniol （3） by LC-MS and NMR. Alternaria perpunctulata was found to have herbicidal activity for the first time, and its secondary metabolites were isolated and identified for the first time.

Key words: Digitaria sanguinalis, Alternaria, herbicidal activity, secondary metabolites

CLC Number:

S482.4

WU Zhao-yuan, REN Meng-yao, ZHANG Zhi-gang, LIU Fang, ZHANG Ya-ni, FANG Wei. Herbicidal activity of Alternaria perpunctulata NBERC_H56 to Digitaria sanguinalis and the secondary metabolites produced by the strain[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(24): 98-100.

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