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71.
Shigehiro Namiki Satoshi Iwabuchi Ryohei Kanzaki 《Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology》2008,194(5):501-515
Pheromone-source orientation behavior can be modified by coexisting plant volatiles. Some host plant volatiles enhance the
pheromonal responses of olfactory receptor neurons and increase the sensitivity of orientation behavior in the Lepidoptera
species. Although many electrophysiological studies have focused on the pheromonal response of olfactory interneurons, the
response to the mixture of pheromone and plant odor is not yet known. Using the silkmoth, Bombyx mori, we investigated the physiology of interneurons in the antennal lobe (AL), the primary olfactory center in the insect brain,
in response to a mixture of the primary pheromone component bombykol and cis-3-hexen-1-ol, a mulberry leaf volatile. Application of the mixture enhanced the pheromonal responses of projection neurons
innervating the macroglomerular complex in the AL. In contrast, the mixture of pheromone and cis-3-hexen-1-ol had little influence on the responses of projection neurons innervating the ordinary glomeruli whereas other
plant odors dynamically modified the response. Together this suggests moths can process plant odor information under conditions
of simultaneous exposure to sex pheromone. 相似文献
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Selection of peptides that bind to the core oligosaccharide of R-form LPS from a phage-displayed heptapeptide library 总被引:3,自引:0,他引:3
To characterize common sites within the core oligosaccharide of the R-form lipopolysaccharide (LPS), we screened peptides from a phage-displayed heptapeptide library by using the most truncated form of R-LPS, Re-LPS (S. Typhimurium SL1165) as a ligand. After three rounds of biopanning/amplification and subsequent screening by phagemid enzyme-linked immunosorbent assay (ELISA), we selected three distinct clones that bind to the ligand LPS. We characterized the binding sites of the three clones by ELISA and thin-layer chromatography immunostaining and found that the three clones bind the two Re-LPSs (SL1165 and S. Minnesota Re595) and Rb2-LPS. In addition, one of the clones also bound to S-form LPS (S. Enteritidis). Current data show that those clones bind to common carbohydrate structure(s) expressed in the core oligosaccharides of those LPS samples. 相似文献
74.
Ryohei Yamaoka Hiroshi Fukami Shoziro Ishii 《Bioscience, biotechnology, and biochemistry》2013,77(10):1971-1977
The sex pheromone produced by adult females of the potato tuberworm moth was isolated from unmated female moths reared in the laboratory. The gas Chromatographic and mass spectrometric data suggested the pheromone to be a tridecatrienyl acetate. The isolated pheromone was subjected to partial hydrogenation with hydrazine and hydrogen peroxide and subsequent ozonolysis to produce a mixture of ω-acetoxy-alkanals. They were identified by mass Chromatographic technique as 4-acetoxy-butanal, 7-acetoxy-heptanal, and 10-acetoxy-decanal respectively. Consequently, the pheromone was identified as 4,7,10-tridecatrienyl acetate except the geometric configuration. 相似文献
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The mechanisms by which functional maps and map plasticity contribute to cortical computation remain controversial. Recent studies have revisited the theory of neural Darwinism to interpret the learning-induced map plasticity and neuronal heterogeneity observed in the cortex. Here, we hypothesize that the Darwinian principle provides a substrate to explain the relationship between neuron heterogeneity and cortical functional maps. We demonstrate in the rat auditory cortex that the degree of response variance is closely correlated with the size of its representational area. Further, we show that the response variance within a given population is altered through training. These results suggest that larger representational areas may help to accommodate heterogeneous populations of neurons. Thus, functional maps and map plasticity are likely to play essential roles in Darwinian computation, serving as effective, but not absolutely necessary, structures to generate diverse response properties within a neural population. 相似文献
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79.
Nakamura Shizuka Fukuma Koichi Wada Kazushige Ueda Mayuko Hayashi Mitsuo 《Sleep and biological rhythms》2018,16(3):351-356
Sleep and Biological Rhythms - The nocturnal sleep of train drivers is apt to be short and their lifestyle become irregular because they drive at midnight and early in the morning. As a result,... 相似文献
80.
Roxana Portieles Eduardo Canales Ingrid Hernández Yunior López Mayra Rodríguez Meilyn Rodríguez Ryohei Terauchi Carlos Borroto Ramón Santos Camilo Ayra-Pardo Deqiang Zhu Xinli Liu Orlando Borrás-Hidalgo 《Plant Molecular Biology Reporter》2018,36(3):484-490
The oomycete pathogens produce important diseases in many plant species. To identify extensin genes expressed during the oomycete Phytophthora nicotianae-Nicotiana megalosiphon interaction, we used the SuperSAGE technology. Using this approach, we detected a N. megalosiphon extensin gene (NmEXT) triggered during the interaction. The extensin gene accumulation induced by the pathogen correlated with disease resistance in different Nicotiana species. Transient expression of NmEXT gene in susceptible Nicotiana tabacum enhanced the resistance to P. nicotianae. Our date indicated that NmEXT gene served a positive role in N. tabacum resistance against P. nicotianae. 相似文献