Chemical, biological and evolutionary aspects of beetle bioluminescence
| العنوان: | Chemical, biological and evolutionary aspects of beetle bioluminescence |
|---|---|
| المؤلفون: | M. A. Torres, Walter R. Terra, Clélia Ferreira, Pio Colepicolo, Marcelo Paes de Barros, Graham S. Timmins, Abner B. Lallf, Cleide Costa, Cassius V. Stevani, Etelvino J. H. Bechara, Vadim R. Viviani |
| المصدر: | ResearcherID M.P. Barros ARKIVOC, Vol 2007, Iss 8, Pp 311-323 (2007) |
| مصطلحات موضوعية: | Larva, Oxygenase, Click beetle, biology, Chemistry, fungi, Organic Chemistry, Zoology, biology.organism_classification, Luciferin, lcsh:QD241-441, Superoxide dismutase, lcsh:Organic chemistry, Catalase, biology.protein, Bioluminescence, Luciferase |
| الوصف: | This work is dedicated to Prof. Waldemar Adam, an esteemed friend and eminent scientist who, for decades, generously shared knowledge, enthusiasm, and laboratory supplies with many Brazilian investigators, among them G. Cilento and myself. In 1980, Prof. Adam was elected Foreign Member of the Brazilian Academy of Sciences in recognition for his substantial contributions towards the development of Chemistry in Brazil. Abstract The hypothesis that luciferases evolved from ligases that acquired oxygenase and luminogenic activities, thereby contributing to the antioxidant machinery of bioluminescent organisms, is revisited here. Larvae of click beetle Pyrearinus termitilluminans (Coleoptera: Elateridae) live under conditions close to normoxia into tunnels dug into termite mounds, whereas other elaterid larvae inhabit tunnels in decaying logs, where pO2 is ~ 2-5%. Interestingly, the catalase and superoxide dismutase (SOD) activities in click beetle larvae were found to respond to the habitat pO2 and are significantly lower in non-luminescent elaterids. Exposure of larval P. termitilluminans larvae to hyperoxia induced SOD and catalase activities concomitantly with increments in luciferase and luciferin levels mainly in the prothorax, the brightest larval segment. Thoracic luciferase activity is 1000-fold higher than in the abdomen, while SOD activity is 2- fold higher. With larval development, an expected decline in antioxidant enzyme activities was apparently compensated by an increase in luciferase activity (2-3 fold) and in urate (40-fold), a major insect antioxidant. Finally, we found that the ligase-rich fat body of larval Tenebrio molitor, a non-luminescent beetle, contains a primal luciferase-like activity. Altogether, these data strengthen the hypothesis that various bioluminescent systems may have developed from potentially chemiluminescent metabolites and ligases that acquired a dioxygenase and luminogenic function over the course of evolution. |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08dddc63f907b403ae684013d8963d82 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000249060000024&KeyUID=WOS:000249060000024 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....08dddc63f907b403ae684013d8963d82 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |