Abstract
In order to develop efficient lures for soybean pod borer Leguminivora glycinivorella (Matsumura) in China, (E,E)-8,10-dodecadienyl acetate (EE-8,10-12:Ac), the main component of the pheromone of L. glycinivorella, and 12 structurally-related compounds were synthesised in good overall yields, regiospecificities, and stereo-selectivities via coupling reactions catalysed by Li2CuCl4. The effect of different synthetic compounds, alone or in combination with EE-8,10-12:Ac, on numbers of captured L. glycinivorella males was evaluated. EE-8,10-12:Ac, (E)-10-dodecenyl acetate(E-10-12:Ac), (E)-8-dodecenol (E-8-12:OH), tetradecyl acetate (14:Ac), and (Z)-9-tetradecenyl acetate (Z-9-14:Ac) alone displayed different attractiveness to L. glycinivorella males. 14:Ac, E-8-12:OH, E-10-12:Ac, (E,E)-8,10-dodecadienal (EE-8,10-12:Ald), (E)-8-dodecenal (E-8-12:Ald), (E)-10-dodecenal (E-10-12:Ald) and Z-9-14:Ac all showed a synergistic effect to EE-8,10-12:Ac at certain dosages. The binary mixtures of EE-8,10-12:Ac and E-10-12:Ald, Z-9-14:Ac,14:Ac, E-8-12:Ald, EE-8,10-12:Ald, E-8-12:OH, or E-10-12:Ac in suitable ratios give 17.00-, 10.98-, 10.67-, 6.73-, 5.54-, 4.30- and 4.50-fold increases in trap catch, respectively, over the standard pheromone lure, and as novel pheromone blends, demonstrated potential use in pheromone traps to monitor or control L. glycinivorella populations in China.
Highlights
Leguminivora glycinivorella is one of the most destructive soybean pests in North China
Our goal is to develop efficient lures for monitoring and controlling soybean pod borer population in China
Our results show that E-8-12:Ac is one of the inhibitors of the sex pheromone EE-8,10-12:Ac to L. glycinivorella in Heilongjiang Province, China
Summary
Leguminivora glycinivorella is one of the most destructive soybean pests in North China. In 2008 Wu reported the synthesis of EE-8,10-12:Ac by the use of Suzuki-Miyaura cross-coupling reaction between potassium (E)-1-propenyl trifluoroborate and (E)-9-iodo-1-(2-tetrahydropyranyloxy)8-nonene in the presence of PdCl2(dppf), CH2Cl2 and Cs2CO3 [2]. This method suffers from high cost and difficulties associated with industrial scale-up. A strong attraction to male moths by a mixture of EE-8,10-12:Ac and E10-12:Ac in a ratio of 2:5 was observed. This reported pheromone lure does not work well in Heilongjiang Province, China. This discrepancy may attribute to the different habitats of L. glycinivorella in Heilongjiang and
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
