Sex pheromone conversion and degradation in antennae of the silkworm mothBombyx mori L.

Kasang, G.; Nicholls, Michael E. R.; Proff, Leopold von

doi:10.1007/bf01990456

Cited by 42 publications

(21 citation statements)

References 24 publications

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“…The enzymatic systems present in male antennae are responsible for degradation of volatile organic compounds, particularly pheromones (Ferkovich 1982;Kasang et al 1989). Inhibition of these enzymes may disrupt the chemical communication of moths; therefore, antennal enzyme inhibition has been investigated as a potential approach for pest control (Prestwich et al 1986).…”

Section: Discussionmentioning

confidence: 99%

Differential activity of non-fluorinated and fluorinated analogues of the European corn borer pheromone

et al. 2008

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The differing antagonist activity of (Z)-13-hexadecen-2-one (Z11 -14 : MK, 1) and its 1,1,1-trifluoro derivative (Z11 -14 : TFMK, 2), two closely related analogues of the European corn borer pheromone Ostrinia nubilalis (Z strain), and their rationale is reported. Both chemicals exhibited some electrophysiological activity, and topical application of 10 pg of pheromone analogue on male antennae was sufficient to induce significantly lower depolarization responses to the pheromone versus untreated insects. In a wind tunnel, the number of European corn borer males attracted to sources containing mixtures of 1 + pheromone in ratios ! 1 : 1 was significantly lower than the number attracted to a source containing pheromone alone. Source contact behaviour was dramatically impaired when the 1 + pheromone blend reached a ratio of 10 : 1, in which only 2 % of males displayed source contact in the presence of antagonist. When compound 1 was present at the source, males usually flew upwind with occasional downwind reversals; when compound 2 was present at the lure, males performed wider crosswind reversals, with little progress toward the source. In the field, traps baited with mixtures of both compounds with the pheromone in ratios of 5 : 1 and 10 : 1 elicited a significantly decreased number of male catches. In esterase inhibition assays, compound 2 was a potent inhibitor (IC 50 = 70 nM), whereas the nonfluorinated compound 1 was not. The different activity of both compounds is presumed to be due to different mechanisms of action; considerations for using methyl ketone analogues as new behavioural antagonists of the pheromone are outlined.

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Section: Discussionmentioning

confidence: 99%

Differential activity of non-fluorinated and fluorinated analogues of the European corn borer pheromone

et al. 2008

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“…However, specific enzymes involved in BOL and BAL catabolism have not been yet identified at the molecular level, despite biochemical evidence of enzymatic degradation of these pheromone components by antennal extracts. Indeed, antennal alcohol-oxidizing activities (Kasang et al, 1989) and aldehyde oxidase activities (Rybczynski et al, 1990) are known to co-occur, leading to efficient degradation of these two components. Enzymatic conversion of BOL in the silkworm antennae revealed that it was oxidized to long-chain fatty acids.…”

Section: Introductionmentioning

confidence: 98%

“…Enzymatic conversion of BOL in the silkworm antennae revealed that it was oxidized to long-chain fatty acids. Fatty aldehydes, including BAL, were found in trace amounts after BOL oxidation, suggesting that they are produced as intermediate metabolites (Kasang et al, 1989). If the corresponding alcohol oxidase was never characterized, more biochemical data are available on the enzyme involved in BAL antennal catabolism.…”

Section: Introductionmentioning

confidence: 99%

Identification of candidate aldehyde oxidases from the silkworm Bombyx mori potentially involved in antennal pheromone degradation

Pelletier

Bozzolan

Solvar

et al. 2007

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“…Later, the turnover slowed down more than 100-fold, showing ca. 40% conversion after 30 min, and 75% conversion after 20 h. This time course differed from that seen in pheromone degradation, in antennae of B. mori (Kasang et al 1989a) and A. polyphemus (Kasang et al 1988), where the degradation proceeded more slowly, but continuously, and was almost complete after 30 min. The incomplete metabolism of benzoic acid might be due to higher antennal loads in the present study (1× 10 12 to 7× 10 13 molecules of benzoic acid per antenna) as compared with the pheromone loads (up to 5 ×10 11 molecules of bombykol per antenna).…”

Section: Discussionmentioning

confidence: 55%

Benzoic acid, a stimulant of odorant receptors of Bombyx mori, is rapidly metabolized to N-benzoylserine on the antennae

et al. 2001

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Sex pheromone conversion and degradation in antennae of the silkworm mothBombyx mori L.

Cited by 42 publications

References 24 publications

Differential activity of non-fluorinated and fluorinated analogues of the European corn borer pheromone

Differential activity of non-fluorinated and fluorinated analogues of the European corn borer pheromone

Identification of candidate aldehyde oxidases from the silkworm Bombyx mori potentially involved in antennal pheromone degradation

Benzoic acid, a stimulant of odorant receptors of Bombyx mori, is rapidly metabolized to N-benzoylserine on the antennae

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