期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 61, 期 1, 页码 41-46出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf304314g
关键词
chaetoglobosin A (ChA); Meloidogyne incognita; Chaetomium globosum; mortality
资金
- Natural Science Foundation of China (NSFC) [30970084]
- National Basic Research Program (973 Program) [2007CB707801]
- Agro-Scientific Research of the Public Interest of the People's Republic of China [201103018]
The nematicidal activity of Chaetomium globosum NK102, culture filtrates, and chaetoglobosin A (ChA) purified by HPLC was evaluated on Meloidogyne incognita. The results showed that C. globosum NK102 significantly repelled second-stage juveniles (J2s). Both filtrates and ChA demonstrated strong adverse effects on J2 mortality with 99.8% at 300 mu g ChA/mL (LC50 = 77.0 mu g/mL) at 72 h. ChA and filtrates did not affect egg hatch until 72 h of exposure. All filtrate treatments inhibited the J2 penetration even in 12.5% dilution treatment. Similarly, ChA (300 and 30 mu g/mL) showed a significant inhibitory effect on J2 penetration. The number of eggs per plant was significantly reduced in the treatment of 30 mg ChA/kg soil by 63% relative to control plants, indicating the apparent negative effect on reproduction of M. incognita. The study demonstrated the nematicidal activity of ChA and suggested that it could be a potential biocontrol agent for integrated management of M. incognita.
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