BIOACTIVITIES AND MECHANISM OF SPIRO ENOL ETHER ANALOGUES AGAINST PIERIS RAPAE |
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| Authors: | Zhi-xiang Zhang Dong-mei Cheng Han-hong Xu Yu-lin Wu Jun-fa Fan |
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| Institution: | Laboratory of Insect Toxicity, South China Agricultural University Guangzhou 510642;Department of Plant Protection, Zhongkai Agrotechnical College, Guangzhou, 510225;State Key Lab. of Bio-organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032 |
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| Abstract: | Abstract Nineteen kinds of spiro enol ether analogues were screened with larvae of Pieris rapae for antifeedant activity. The results showed that the antifeedant activity of compounds No.20 and No. 12 was higher than others. In non-choice test, AFC50 values within 24 h of compounds No.20 and No. 12 against 3rd instar larvae of P. rapae were 226.93 μg/mL and 370.00 μg/mL, and that in choice test against 4th larvae were 280.54 μg/mL and 398.88 μg/mL, respectively. Compd. No.20 could prolong the eggs hatch time and reduce the haemolymph content and the protein content in haemolymph of 4th instar larvae obviously. Compd. No.20 could protect tested leaves and control larvae of P. rapae effectively. |
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| Keywords: | Spiro enol ether analogues Pieris rapae bioactivity mechanism |
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