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DING Li-juan, DING Wei**, ZHANG Yong-qiang
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Abstract: Two ultrasonic wave extracts (n-butarol and ethyl acetate as solvents) of Phytolacca americana acetone extract and residues after extracting were investigated for acaricidal activities against Tetranychus cinnabarinus. Results showed that the n-butarol extract exhibited the highest acaricidal activity among all treatments. The corrected mortalities of n-butarol extract were 74% and 97% after 24 h and 48 h of treatment at 2.5 mg·mL-1, and its LC50 and LC90 were 1.787 and 7.272 mg·mL-1 for 48 h, respectively. Meanwhile, the repellent rates were 62%, 82% and 84% against the mite for 24 h and oviposition inhibition rates (48 h) were 39%, 81% and 93%, at concentrations of 4, 2 and 1 mg·mL-1, respectively. The nbutarol extract was further separated by the silica gel column and monitored by thinlayer chromatography (TLC) with UV detection, and 14 fractions were obtained. The 11th fraction showed highest acaricidal activity with a corrected mortality of 98% at the concentration of 2 mg·mL-1 and its LC50 and LC90 were 0.932 and 3.110 mg·mL-1, respectively after 48 h of treatment.
Key words: metaproteomics, metabolic pathways, biodegradation mechanism, microbial ecosystems, biological treatment of wastewater.
DING Li-juan, DING Wei**, ZHANG Yong-qiang. Acaricidal activity of different ultrasonic wave extracts from Phytolacca americana roots against Tetranychus cinnabarinus.[J]. cje.
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URL: https://www.cje.net.cn/EN/abstract/abstract19777.shtml
https://www.cje.net.cn/EN/Y2013/V32/I3/621