农药学学报2021，Vol.23Issue(2)：316-322,7.DOI:10.16801/j.issn.1008-7303.2021.0018
芦荟苦素和芦荟凝胶对新月弯孢的抑菌活性
Inhibitory activity of aloesin and aloe gel against Curvularia lunata
摘要
Abstract
In order to find natural active substance alternative to the chemical fungicides currently used against the devastating Curvularia leaf spot of rice, the bioactivity of aloesin and aloe gel against Curvularia lunata was determined. The filter paper method showed that 300 mg/mL aloesin led to an obvious inhibitory band (3.37 mm) at 28 h, and a inhibitory zone (Φ = 51.27 mm) against spores (3 × 104 cfu/mL), and these inhibitory effects remained until 6 d. The mycelial inhibition rate by aloe gel at 1, 2, 4, 8, 16, 32 and 64 mg/mL ranged from 9.25％ to 56.21％ at 5 d, and it increased with increased concentration. Additionally, the inhibition rate of 64 mg/mL aloe gel increased by 21.87％ from 2 to 5 d. The mycelial growth of C. lunata treated with 160 mg/mL aloesin was weaker than control, and no appressorium produced. The germ tube of C. lunata treated with aloe gel was much slower than control, and the inhibition rate was 75.39％-96.58％. This study was first reported that aloesin effectively inhibited mycelia growth and conidia germination of C. lunata, and aloe gel effectively inhibited mycelia growth of C. lunata.关键词
芦荟苦素/芦荟凝胶/新月弯孢(Curvularia lunata)/抑菌活性Key words
aloesin/aloe gel/Curvularia lunata/antifungal activity分类
化学化工引用本文复制引用
张国辉,李荣玉,吴小毛,李明..芦荟苦素和芦荟凝胶对新月弯孢的抑菌活性[J].农药学学报,2021,23(2):316-322,7.基金项目
This work was supported by National Key R&D Program of China(No.2016YFD0200500),the national natural sci-ence foundation of China(No.31701816,31460480),agricultural research projects of the science and technology department of Guizhou province(No.[2019]3001),and the science and technique foundation of Guizhou province(No.[2017]1083) （No.2016YFD0200500）
