期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 22, 期 13, 页码 -出版社
MDPI
DOI: 10.3390/ijms22136870
关键词
biological control; plant parasitic nematodes; chitin; Purpureocillium lilacinum; 6-oxychitin
资金
- National Key R&D Program of China [2018YFC03113, 2019YFD0900705]
- National Natural Science Foundation of China [42076126]
- Shandong Provincial Natural Science Foundation [ZR2020MD072]
- Qingdao Applied Basic Research Project [19-6-2-34-cg]
- Qingdao science and technology demonstration and guidance project [20-3-422-nsh]
- Science and Technology Plan Project of Shinan District, Qingdao [2020-2-013-QT]
The study found that 6-oxychitin is a better promoter of the nematicidal potential of Purpureocillium lilacinum than other water-soluble chitin derivatives, inhibiting the movement and egg hatching of nematodes, destroying their accumulation and invasion, and promoting plant growth.
Plant-parasitic nematodes cause severe economic losses annually which has been a persistent problem worldwide. As current nematicides are highly toxic, prone to drug resistance, and have poor stability, there is an urgent need to develop safe, efficient, and green strategies. Natural active polysaccharides such as chitin and chitosan with good biocompatibility and biodegradability and inducing plant disease resistance have attracted much attention, but their application is limited due to their poor solubility. Here, we prepared 6-oxychitin with good water solubility by introducing carboxylic acid groups based on retaining the original skeleton of chitin and evaluated its potential for nematode control. The results showed that 6-oxychitin is a better promoter of the nematicidal potential of Purpureocillium lilacinum than other water-soluble chitin derivatives. After treatment, the movement of J2s and egg hatching were obviously inhibited. Further plant experiments found that it can destroy the accumulation and invasion of nematodes, and has a growth-promoting effect. Therefore, 6-oxychitin has great application potential in the nematode control area.
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