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Soyoung Kang,Hye Jung Lee,김영호,Jung Hun Oh,Bum Jun Kim,Kook Jin Lim,Seunghwan Lee,황승용,이시혁,권덕호 한국응용곤충학회 2012 Journal of Asia-Pacific Entomology Vol.15 No.3
Proteomic differences between Bemisia tabaci biotypes (B and Q) were investigated by two-dimensional gel electrophoresis in conjunction with mass spectroscopic analysis. Among several protein spots specific to biotype B, carboxylesterase 2 (Coe2) was significantly more expressed in biotype B. Phylogenetic analysis demonstrated the close relationship of Coe2 with Myzus persicae esterase E4. Comparison of full-length cDNA sequences of Coe2 revealed no amino acid differences in functionally important conserved regions between biotypes B and Q. The transcription level of the Coe2 gene (coe2) was 5.8-fold higher in biotype B than in biotype Q, but the coe2 copy number was not different between biotypes, suggesting that the overexpression of Coe2 was due to transcriptional up-regulation. Native isoelectric focusing followed by mass spectrophotometric analysis confirmed that the overexpressed pI 5.7 esterase in biotype B was Coe2. In-gel inhibition of Coe2 by three insecticides indicated the interaction of Coe2 with chlorpyrifos-methyl oxon and permethrin,but not with imidacloprid. These findings suggest that overexpression of Coe2 in biotype B can confer chemical defense against pyrethroid and organophosphate insecticides, perhaps by sequestration and hydrolysis,as seen in M. persicae E4. Finally, utility of Coe2 as a potential biotype-specific protein marker is discussed.
The putative role of carboxylesterase 2 in insecticide tolerance in Bemisia tabaci
Soyoung Kang,Deok-Ho Kwon,Jung Hun Oh,Si Hyeock Lee 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05
The hemipteran whitefly Bemisia tabaci (Gennadius) is one of the most destructive pests damaging more than 600 agricultural crop species worldwide. The B and Q biotypes are most widely spread in Korea but they are not distinguishable based on morphological characters. Carboxylesterase 2 (Coe2) was determined to be 5.9 times more expressed in B biotype compared to Q biotype. Comparison of deduced amino acid sequences of Coe2 (595 a.a.) showed a total of 3.85% polymorphisms between B and Q types but no differences in major active sites. Quantitative real-time PCR revealed that both B and Q biotypes possess a single copy of coe2, suggesting that the overexpression of Coe2 in B biotype is likely due to overtranscription. To determine the putative role of Coe2 in insecticide tolerance, esterases were separated by native isoelectric focusing (IEF) and inhibited by various insecticides. The putative Coe2 band was apparently inhibited by pyrethroid and organophosphate insecticides, but not by imidacloprid. These findings suggest that overexpression of Coe2 confers chemical defense against pyrethroid and organophosphate insecticides, perhaps by sequestration.
Soyoung Jung(정소영) 한국HCI학회 2012 한국HCI학회 학술대회 Vol.2012 No.1
Interface and layout design of smart devices' Operating System (OS) tend to be simpler, lighter and more intuitive than before. Compare with when the smartphones emerged and now, the interface and layout design of smartphones has certainly different styles. The evolvement has been towards to be simpler, lighter and more intuitive. The trends are that physical numbers of layers are getting bigger but each interface has less contents, the size of text for icon is getting smaller and the icon design also getting similar and looks very harmonious. Until now this trend, simpler, lighter and more intuitive is accelerating; the guidance for interface and layout design encourage this trend however, there are no empirical evidence. In this study will investigate the four trends in smart devices OS; first the number of layers in layout design, second the number of contents in each layers according to the screen size, third the text size according to icons size and screen size: it means more intuitive, lastly the icons are looks harmonious style.
Development of protein and DNA markers for the identification of Bemisia tabaci biotypes B and Q
Soyoung Kang,Bum Joon Kim,Hye Jung Lee,Si Hyeock Lee 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.10
The hemipteran whitefly Bemisia tabaci (Gennadius) is one of the most destructive pests damaging more than 600 agricultural crop species worldwide. The B and Q biotypes are most widely spread in Korea but they are not distinguishable based on morphological characters. In order to search for protein markers that can be employed for rapid and accurate diagnosis of biotypes, two-dimensional PAGE (2DE) in conjunction with mass spectroscopic analysis were conducted. Eleven biotype-specific spots were repeatedly identified during three repetitions of 2DE and analyzed by Q-TOF. One of the B type-specific protein spots was identified as carboxylesterase 2 (Coe2). The transcript level of coe2 was determined to be 6 times higher in B type than in Q type by quantitative real-time PCR. In addition, comparison of genomic DNA sequence of coe2 between B and Q types identified a biotype-specific intron, from which specific primer sets were designed. One-step PCR using these biotype-specific primers successfully distinguished the two biotypes in a high accuracy. Availability of the biotype-specific protein and DNA markers will greatly improve the detection of B. tabaci biotype in the field.
Jung, Soyoung,Cho, Won,Lee, Hee Jung,Oh, Moonhyun WILEY-VCH Verlag 2009 Angewandte Chemie Vol.48 No.8
<P>This template will self-destruct: A unique particle-growth mechanism involves growth of new coordination polymers on the surface of initially formed hexagonal blocks and concomitant dissolution of the blocks to form hexagonal tubes (see scheme and scanning electron, optical, and fluorescence microscopy images). Calcination of the tubes yields ZnO particles of the same shape. <img src='wiley_img/14337851-2009-48-8-ANIE200804816-content.gif' alt='wiley_img/14337851-2009-48-8-ANIE200804816-content'> </P> <B>Graphic Abstract</B> <P>This template will self-destruct: A unique particle-growth mechanism involves growth of new coordination polymers on the surface of initially formed hexagonal blocks and concomitant dissolution of the blocks to form hexagonal tubes (see scheme and scanning electron, optical, and fluorescence microscopy images). Calcination of the tubes yields ZnO particles of the same shape. <img src='wiley_img/14337851-2009-48-8-ANIE200804816-content.gif' alt='wiley_img/14337851-2009-48-8-ANIE200804816-content'> </P>
Jung, Soyoung,Oh, Moonhyun WILEY-VCH Verlag 2008 Angewandte Chemie. international edition Vol.47 No.11
<B>Graphic Abstract</B> <P>Fluorescent CPPs (coordination polymer particles) with controllable sizes ranging from the nano- to the microscale were synthesized in high yield by a solvothermal approach involving zinc ions and a carboxy-functionalized salen ligand. The initially formed nanowires aggregate to form cube-like clusters which undergo intrastructural fusion to produce uniform cubic particles, as shown by the depicted sequence of SEM images. <img src='wiley_img/14337851-2008-47-11-ANIE200704209-content.gif' alt='wiley_img/14337851-2008-47-11-ANIE200704209-content'> </P>