Pathogenicity and Metabolites of Endoparasitic Nematophagous Fungus Drechmeria coniospora YMF1.01759 against Nematodes
| Autor: | Guo-Hong Li, Zebao Dai, Ke-Qin Zhang, Pei-Ji Zhao, Juan Wan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Microbiology (medical)
QH301-705.5 Biological pest control endoparasitic nematophagous fungi Fungus Biology Microbiology Article nematicidal Nematophagous fungus Virology Meloidogyne incognita Bioassay Root-knot nematode Biology (General) Drechmeria coniospora metabolites Hatching food and beverages biology.organism_classification Spore egg hatching |
| Zdroj: | Microorganisms Volume 9 Issue 8 Microorganisms, Vol 9, Iss 1735, p 1735 (2021) |
| ISSN: | 2076-2607 |
| DOI: | 10.3390/microorganisms9081735 |
| Popis: | Plant parasitic nematodes cause severe damage to crops. Endoparasitic nematophagous fungi (ENF) are a type of important biocontrol fungi, which can cause disease or kill nematodes by producing various spores. As a major ENF, Drechmeria coniospora displays certain potential for controlling plant-parasitic nematodes. In this study, the pathogenicity and secondary metabolites of the endoparasitic fungus D. coniospora YMF1.01759 were investigated. The strain D. coniospora YMF1.01759 had high infection efficiency against nematodes. The process of infecting nematodes by the strain was observed under an electron microscope. Here, 13 metabolites including one new compound 4(S)-butoxy-3-(butoxymethyl)-2-hydroxycyclopent-2-en-1-one (2) were isolated and identified from the fermentation products of D. coniospora YMF1.01759 cultured in a SDAY solid medium. Furthermore, a bioassay showed that 5-hydroxymethylfuran-2-carboxylic acid (1) is toxic to the root knot nematode Meloidogyne incognita and affects the hatching of its egg. Thereby, the nematicidal mortality attained 81.50% at 100 μg/mL for 48 h. Furthermore, egg hatching was inhibited at the tested concentrations, compared with water control eggs. This is the first report on the secondary metabolites of the ENF D. coniospora. The results indicated that D. coniospora could infect nematodes by spores and produce active metabolites to kill nematodes. The biological control potential of D. coniospora against nematodes was expounded further. |
| Databáze: | OpenAIRE |
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