| cellular apoptosis of hemocytes from dendrolimus tabulaeformis tsai et liu larvae induced with the secondary metabolites of beauveria brongniartii (sacc.) petch. | to investigate the effect of the secondary metabolites of entomopathogenic fungus on the hemocyte immunity of host insect, the secondary metabolite complex (smc) of beauveriabrongniartii was used in three concentrations (5.5, 55, and 550 µg/ml), and the 4(th) instar larvae of the pine caterpillar dendrolimustabulaeformis were employed as host insects. the larvae were inoculated with the smc solutions by injection in bioassays. apoptosis of the larval hemocytes was observed using fluorescence mic ... | 2013 | 23940771 |
| identification and behavioral evaluation of sex pheromone components of the chinese pine caterpillar moth, dendrolimus tabulaeformis. | the chinese pine caterpillar moth, dendrolimus tabulaeformis tsai and liu (lepidoptera: lasiocampidae) is the most important defoliator of coniferous trees in northern china. outbreaks occur over enormous areas and often lead to the death of forests during 2-3 successive years of defoliation. the sex pheromone of d. tabulaeformis was investigated to define its chemistry and behavioral activity. | 2012 | 22428040 |
| sexual dimorphism in antennal morphology and sensilla ultrastructure of dendrolimus tabulaeformis tsai et liu (lepidoptera: lasiocampidae). | insects rely heavily on olfaction to locate habitat, mates, and oviposition sites, while odorant molecules and the antennal olfactory sensory cells of insects are two indispensable components of olfactory response. our previous work identified the sex pheromones and volatile compounds derived from host plant of dendrolimus tabulaeformis tsai et liu, a serious economic pest of pines in northern china. however, little is known about the olfactory system of d. tabulaeformis, especially in females. ... | 2013 | 23077000 |
| molecular characterization and phylogenetic analysis of three odorant binding protein gene transcripts in dendrolimus species (lepidoptera: lasiocampidae). | pine caterpillar moths, dendrolimus spp. (lepidoptera: lasiocampidae), are serious economic pest of pines. previously, phylogenetic analyses of dendrolimus using different methods yielded inconsistent results. the chemosensory systems of insects may play fundamental roles in promoting speciation. odorant-binding proteins (obps) participate in the first step of odor detection. studying the evolution of obps in closely related species may help us to identify their role in speciation. we identified ... | 2014 | 24318455 |
| molecular characterization, expression pattern, and ligand-binding property of three odorant binding protein genes from dendrolimus tabulaeformis. | odorant binding proteins (obps) play important roles in insect olfactory processes. the chinese pine caterpillar moth, dendrolimus tabulaeformis (lepidoptera, lasiocampidae) is a serious economic pest in china, and the pheromones of this species have been identified to monitor their presence. however, the molecular mechanisms by which d. tabulaeformis perceive pheromones and host volatiles remain unknown. in this study, we identified and characterized three new obps, including one pheromone bind ... | 2014 | 24728949 |
| the effect of beauveria brongniartii and its secondary metabolites on the detoxification enzymes of the pine caterpillar, dendrolimus tabulaeformis. | the mortality of pine caterpillar, dendrolimus tabulaeformis tsai et liu (lepidoptera: lasiocampidae), larvae treated with beauveria brongniartii (saccardo) petch (hypocreales: clavicipitaceae) conidia and cell-free culture supernatants enriched for the secondary metabolites of the fungus was investigated. in addition, the effects of the treatments on the activities of two insect-related defense response proteins, glutathione s-transferase (gst) and esterase (est), were measured over time. bioas ... | 2013 | 23909949 |