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Characterization of HSP70 expression in drones of Apis cerana (Hymenoptera: Apidae)
Wang Deqian,Dong Jie,Huang Minjie,Ding Guiling,Huang Jiaxing 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.1
Heat shock proteins (HSPs) constitute a superfamily of molecular chaperones that are rapidly biosynthesized in response to various biotic and abiotic factors. In this study, we first cloned the full-length HSP70 gene of the Eastern honeybee Apis cerana. Then, using real-time quantitative PCR, we explored HSP70 expression profiles in drones at different developmental stages, ages, and reproductive statuses (with and without semen). The fulllength HSP70 cDNA is 2421 bp, including a 1953-bp open reading frame (ORF) that encodes a polypeptide of 650 amino acids. The HSP70 gene consists of one intron and two exons. The phylogenetic analysis revealed that the HSP70 genes of A. cerana and Apis mellifera are the most closely related. We observed HSP70 expression at all selected developmental stages and detected the highest expression in pupae with an unpigmented body cuticle and brown eyes (Pb) and much lower expression in larvae hatched within 72 h. In adult drones of different ages, the highest expression level of HSP70 was observed in 16-day-old drones; significantly lower accumulation of HSP70 mRNA was detected in 4-day-old drones. There was no significant difference in HSP70 expression be tween drones with and without semen captured at the entrance, while the HSP70 gene expression level strikingly differed between drones captured at the entrance and the drones collected within the hive. Our study suggests that HSP70 might play a critical role in drone development and during reproductive mating events.
Seismological Evidence for North-east Strike Large Active Structure in the Yellow Sea
Zhao, Genmo,Diao, Guiling,Wang, Junguo,Yang, Gangsheng 한국지진연구소 1996 SAFE Vol.2 No.1
The Yellow Sea which is situated between the Chinese continent and the Korean peninsula is a typical marginal sea basin, the submarine structure of which is covered with very thick Cenozoic deposit and sea water Liu, 1992). The method of judging tectonic activity based on the microdynamic observation of tectonic deformation is very difficult to be used here. Although the submarine heat flow can be used as the significant basis for studying the submarine structure, yet the water in the Yellow Sea is rather shallow, the variation in water temperature produces a great impact on the measurement of heat flow and convincible data of which are very difficult to be obtained. Therefore, as far as the entire Yellow Sea is concerned, especially for the area fat away from the seacoast, the studies of the tectonic activity as seldom reported. However, the method of analyzing tectonic activity based on the data of seismic wave from the depth of the earth has been paid move and more attentions nowadays, With the seismic data in China, the characteristics of the earthquakes in the Yellow Sea have already been described, but the description was limited only to the flank along the Chinese continent (Liu et al., 1994), as to the other flank along the Korean peninsula, not much is known. Recently, we have systematically collected the seismic data from China, D. P. R. Korea and R. 0. Korea to compile the earthquake cataloger for the Yellow Sea and the surrounding regions, as result, it is possible to make a complete analysis of seismic activity in the Yellow Sea area now.
Hui, K N,Yin, Cui-Lei,Hui, K S,Lee, J Y,Cao, Dianxue,Wang, Guiling American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.4
<P>Nanowires (Co3O4 and NiCo2O4) and nanoplates (beta-Ni(OH)2) grown on Ni foam are successfully prepared by a template-free method and used as cathode electrodes for the electroreduction of H2O2, in an alkaline medium. Catalytic performance is investigated via cyclic voltammetry and chronoamperometry. The Co3O4 and NiCo2O4 nanowire electrodes exhibit much better catalytic activity, stability, and mass transfer properties for H2O2 electroreduction than pressed Co3O4 and NiCo2O4 nanoparticle/carbon/PTFE electrodes. A current density of 101.8 mA cm(-2) and 122.7 mA cm(-2) are respectively achieved on Co3O4 and NiCo2O4 nanowire electrodes at -0.4 V in 0.4 mol/L H2O2, and 3.0 mol/L NaOH solution at room temperature.</P>