Metabolism of dibenzo-p-dioxin by Sphingomonas sp. strain RW1
- R. Wittich, H. Wilkes, V. Sinnwell, W. Francke, P. Fortnagel
- ChemistryApplied and Environmental Microbiology
- 1 March 1992
Results obtained from determinations of enzyme activities and oxygen consumption suggest meta cleavage of the trihydroxy compounds in dibenzo-p-dioxin-utilizing bacteria.
Orchid pollination by sexual swindle
- F. Schiestl, M. Ayasse, W. Francke
- GeologyNature
- 3 June 1999
It is found that flowers of O. sphegodes produce the same compounds and in similar relative proportions as are found in the sex pheromone of its pollinator species, the solitary bee Andrena nigroaenea.
Degradation of Chlorinated Dibenzofurans and Dibenzo-p-Dioxins by Sphingomonas sp. Strain RW1
- H. Wilkes, R. Wittich, K. Timmis, P. Fortnagel, W. Francke
- ChemistryApplied and Environmental Microbiology
- 1 February 1996
Most mono- and dichlorinated dibenzofurans and dibenzo-p-dioxin-mineralizing bacterium investigated in this study were degraded to the corresponding monochlorinated salicylates and catechols, respectively, which indicates an initial dioxygenolytic attack on the substituted as well as on the nonsubstituted aromatic nucleus of most of the target compounds.
The Chemistry of Sexual Deception in an Orchid-Wasp Pollination System
- F. Schiestl, R. Peakall, W. Francke
- BiologyScience
- 17 October 2003
The “sexually deceptive” orchid Chiloglottis trapeziformis attracts males of its pollinator species, the thynnine wasp Neozeleboria cryptoides, by emitting a unique volatile compound,…
Naphthalene Degradation and Incorporation of Naphthalene-Derived Carbon into Biomass by the ThermophileBacillus thermoleovorans
- E. Annweiler, H. Richnow, W. Michaelis
- Chemistry, EngineeringApplied and Environmental Microbiology
- 1 February 2000
ABSTRACT The thermophilic aerobic bacterium Bacillus thermoleovorans Hamburg 2 grows at 60°C on naphthalene as the sole source of carbon and energy. In batch cultures, an effective substrate…
Metabolism of Dibenzofuran by Pseudomonas sp. Strain HH69 and the Mixed Culture HH27
- P. Fortnagel, H. Harms, W. Francke
- Chemistry, BiologyApplied and Environmental Microbiology
- 1 April 1990
Evidence is given for a novel type of dioxygenases responsible for the attack on the biarylether structure of the dibenzofuran molecule and a meta-fission mechanism for cleavage of the dihydroxylated aromatic nucleus of 2,2',3-trihydroxybiphenyl is suggested as the next enzymatic step in the degradative pathway.
An Inhibitory Sex Pheromone Tastes Bitter for Drosophila Males
- Fabien Lacaille, Makoto Hiroi, J. Ferveur
- BiologyPLoS ONE
- 15 August 2007
Using behavioral and electrophysiological measures of responses to natural and synthetic compounds, it is shown that Z-7-tricosene, a Drosophila male cuticular hydrocarbon, acts as a sex pheromone and inhibits male-male courtship, and that the inhibitory phersomone tastes bitter to the fly.
Cuticular Hydrocarbons as Sex Pheromone of the Bee Colletes cunicularius and the Key to its Mimicry by the Sexually Deceptive Orchid, Ophrys exaltata
- J. Mant, C. Brändli, N. Vereecken, C. Schulz, W. Francke, F. Schiestl
- BiologyJournal of Chemical Ecology
- 21 July 2005
Male Colletes cunicularius bees pollinate the orchid, Ophrys exaltata, after being sexually deceived by the orchid’s odor-mimicry of the female bee’s sex pheromone. We detected biologically active…
Chemical ecology and pollinator-driven speciation in sexually deceptive orchids.
- M. Ayasse, J. Stökl, W. Francke
- Environmental Science, BiologyPhytochemistry
- 1 September 2011
Identification and synthesis of the major sex pheromone of the olive fly (Dacus oleae)
- R. Baker, R. Herbert, P. Howse, O. Jones, W. Francke, W. Reith
- Chemistry, Biology
- 13 May 1980
The major component of the sex pheromone of the olive fly has been shown to be 1,7-dioxaspiro[5.5] undecane (1) and its structure has been confirmed by unambiguous synthesis; field studies have…
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