摘要
本研究旨在寻找出与瑞香狼毒同科的瑞香科植株是否有潜力成为防治病原真菌的植物资源,为筛选及制备有效且安全的植物源农药打开新思路。以5种试验材料作为瑞香科植物的代表,利用其乙醇提取物对番茄枯萎、黄瓜靶斑等7种病原真菌进行毒力测定。结果显示,瑞香狼毒与梦花在所有提取物中表现最佳,尤其是针对各种枯萎病病原菌,在较高浓度下的抑菌率都接近100%。而祖师麻提取物对黄瓜靶斑以及草莓红中柱的抑制效果在所有的提取物中表现最佳,其EC50值分别为0.925、0.920 mg/mL。南岭荛花在5种瑞香科植物提取物中表现最差,但对番茄枯萎和黄瓜炭疽病原菌的抑制效果良好,EC50值均小于1.1 mg/mL。研究表明,5种瑞香科植物提取物对病原真菌普遍有良好的抑菌活性,瑞香科植物可作为新型植物源农药的筛选靶标。
The purpose is to find out whether Thymelaeaceae plants of the same family as Stellera chamaejasme have the potential to become plant resources for controlling pathogenic fungi, and to explore new ways for screening and preparing effective and safe botanical pesticides. Five test materials including Stellera chamaejasme, Lndian wikstroemia, Daphne giraldii, Daphne genkwa, and Edgeworthia chrysantha, were used as representatives of the plants in the Thymelaeaceae family. The results showed that Stellera chamaejasme and Edgeworthia chrysantha performed the best in all extracts, especially against various pathogens of Fusarium wilt. The inhibitory rate at higher concentrations was close to 100%. The inhibitory effect of Daphne giraldii extract on cucumber target spots and strawberry red central pillar was the best among all the extracts, and the EC50value was 0.925 and 0.920 mg/mL, respectively. Lndian wikstroemia had the worst performance among the5 kinds of plant extracts of Thymelaeaceae, but it had a good inhibitory effect on tomato wilt and cucumber anthracnose pathogens, and the EC50value was less than 1.1 mg/mL. The results show that the extracts of five Thymelaeaceae plants have good antimicrobial activity against pathogenic fungi, indicating that Thymelaeaceae plants can be used as screening targets for new plant-derived pesticides.
作者
陈云坤
胡春艳
张知宇
赵艳芳
曹挥
CHEN Yunkun;HU Chunyan;ZHANG Zhiyu;ZHAO Yanfang;CAO Hui(College of Plant Protection,Shanxi Agricultural University,Jinzhong,Shanxi 030801)
出处
《中国农学通报》
2022年第13期148-156,共9页
Chinese Agricultural Science Bulletin
基金
山西省重点研发计划项目“山西有机旱作生态植保关键技术研发与应用”(201903D211001-1-3)
山西省应用基础研究计划面上青年基金项目(201901D211366)。
关键词
瑞香科植物
植物提取物
植物源农药
抑菌活性
植物病原真菌
结香花
次生代谢产物
Thymelaeaceae plants
plant extract
botanical pesticides
antimicrobial activity
plant phytopathogenic fungi
Edgeworthia chrysantha
secondary metabolite
