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Mapping a Quantitative Trait Locus for Growth and Backfat on Porcine Chromosome 18
Wu, X.L.,Lee, C.,Jiang, J.,Peng, Y.L.,Yang, S.L.,Xiao, B.N.,Liu, X.C.,Shi, Q.S. Asian Australasian Association of Animal Productio 2001 Animal Bioscience Vol.14 No.12
A QTL was localized near S0120 on porcine chromosome 18. The QTL was significant (p<0.05) for average daily gain (ADG) of body weight and backfat thickness (BFT). The estimates of additive and dominance effects for the QTL were 0.0135 kg/day (p<0.001) and 0.0138 kg/day (p>0.5) for ADG and 1.6115 mm (p<0.001) and 0.9281 mm (p>0.05) for BFT. The location of this QTL coincided with a few growth hormone pathway genes. This study suggested that a QTL allele probably resulted from a mutation responsible for physiological lipase deficiency favoring obesity. This QTL might be important to obesity as well as growth in pigs.
Quantitative Trait Loci Mapping for Porcine Backfat Thickness
Wu, X.L.,Lee, C.,Jiang, J.,Peng, Y.L.,Yan, H.F.,Yang, S.L.,Xiao, B.N.,Liu, X.C.,Shi, Q.S. Asian Australasian Association of Animal Productio 2002 Animal Bioscience Vol.15 No.7
A partial genome scan using porcine microsatellites was carried out to detect quantitative trait loci (QTL) for backfat thickness (BFT) in a pig reference population. This population carried QTL on chromosomes 1, 13 and 18. The QTL on chromosome 1 was located between marker loci S0113 and SW1301. The QTL corresponded to very low density lipoprotein receptor gene (VLDLR) in location and in biological effects, suggesting that VLDLR might be a candidate gene. The QTL found on chromosome 13 was found between marker loci SWR1941 and SW864, but significance for the marker-trait association was inconsistent by using data with different generations. The QTL on chromosome 18 was discovered between markers S0062 and S0117, and it was in proximity of the regions where IGFBP3 and GHRHR were located. The porcine obese gene might be also a candidate gene for the QTL on chromosome 18. In order to understand genetic architecture of BFT better, fine mapping and positional comparative candidate gene analyses are necessary.
Wang, X.-T.,Zhang, H.,Zhao, C.-J.,Li, J.-Y.,Xu, G.-Y.,Lian, L.-S.,Wu, C.-X.,Deng, Xuemei Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.2
Mammal microsomal glutathione transferase 1 (MGST1) can conjugate many toxic or carcinogenic substances and depress oxidative stress. In this study, Chicken MGST1 and its variants were cloned for the first time and were composed of 956 or 944 nucleotides. The 12 nt deletion in the exon 2 did not alter the GT-AG rule and the ORFs for the two MGST1 variants were the same, which both comprised 465 nucletides and encoded a peptide with 155 amino acids. It was found that the two different splice variants identified using RT-PCR expressed in all three organs investigated of Dwarf Brown Chicken, namely liver, spleen and shell gland. Moreover, the expression level of MGST1 mRNA in the liver of Dwarf Brown chickens was the highest (p<0.01), and there were no significant differences between the spleen and the shell gland. These results provide a base for studying the biological function of Chicken MGST1.
Characterization of filamentous bacteriophage PE226 infecting <i>Ralstonia solanacearum</i> strains
Murugaiyan, S.,Bae, J.Y.,Wu, J.,Lee, S.D.,Um, H.Y.,Choi, H.K.,Chung, E.,Lee, J.x2010,H.,Lee, S.x2010,W. Blackwell Publishing Ltd 2011 Journal of applied microbiology Vol.110 No.1
<P><B>Abstract</B></P><P><B>Aims: </B> The aim of this study was to isolate and characterize new bacteriophages that infect a wide range of plant pathogenic <I>Ralstonia solanacearum</I> strains.</P><P><B>Methods and Results: </B> Fifteen bacteriophages were isolated from pepper, tomato and tobacco plant rhizospheres infected with <I>R.?solanacearum.</I> A host specificity analysis of the isolated phages using nine strains of <I>R.?solanacearum</I> indicated great phage diversity in a single soil. Two phages, PE226 and TM227, showed clear plaques on all nine bacterial hosts tested and were virtually identical in morphology and genome. PE226, an Inovirus, is a long, flexible, filamentous phage carrying a circular (+) sense single‐strand DNA genome of 5475 nucleotides. DNA sequences of PE226 exhibited nine open reading frames (ORF) that were not highly similar to those of other phages infecting <I>R.?solanacearum</I>. The genome organization of PE226 was partially similar to that of p12J of <I>Ralstonia pickettii</I>. One ORF of PE226 showed identity to the <I>zot</I> gene encoding zonula occludens toxin of <I>Vibrio cholera</I>. <I>Orf7</I> of PE226 was also present in the genome of <I>R.?solanacearum</I> strain SL341. However, SL341, a highly virulent strain in tomato, was still sensitive to phage PE226.</P><P><B>Conclusions: </B> A new, flexible, filamentous phage PE226 infected wide range of <I>R.?solanacearum</I> strains and carried unique circular single‐strand DNA genome with an ORF encoding Zot‐like protein.</P><P><B>Significance and Impact of the Study: </B> PE226 may be a new type of temperate phage, based on its lytic nature on a wide range of hosts and the presence of a <I>zot</I> homologue in a host bacterial genome.</P>
The Magnetoresistance in Iron-based Superconductors
B. Lv,R. B. Xie,S. L. Liu,G. J. Wu,H. M. Shao,X. S. Wu 한국자기학회 2011 Journal of Magnetics Vol.16 No.2
The phase transition of vortex matter from solid to liquid was studied in iron-based superconductors. Based on the traditional vortex glass theory, we have examined the magnetoresistivity data of iron-based superconductors using our extended thermal activation model: ρ(B,T) = ρ((T-Tg(B))/(Tc(0)-Tg(B)))<SUP>v(z-1)</SUP>. We predict that the magnetic field-dependent area S + S? which integrates ρ with T is proportional to B<SUP>β</SUP>, where β is the vortex glass transition exponent. From our calculation, the vortex glass transition exponent is 0.33, close to the exponent of area S?+ S is 0.31 in SmO0.9F0.1FeAs; the exponent of area S is 0.63, which is close to the irreversibility line exponent 2/3. Both of the results show the validity of our model. In addition, our model is shown to be effective in describing irreversibility behavior in layered superconductors.
Zheng, W.,Shen, R. F.,Sakamoto, T.,Beardmore, A. P.,De Pasquale, M.,Wu, X. F.,Gorosabel, J.,Urata, Y.,Sugita, S.,Zhang, B.,Pozanenko, A.,Nissinen, M.,Sahu, D. K.,Im, M.,Ukwatta, T. N.,Andreev, M.,Klun IOP Publishing 2012 The Astrophysical journal Vol.751 No.2
<P>We present a comprehensive analysis of a bright, long-duration (T-90 similar to 257 s) GRB 110205A at redshift z = 2.22. The optical prompt emission was detected by Swift/UVOT, ROTSE-IIIb, and BOOTES telescopes when the gamma-ray burst (GRB) was still radiating in the gamma-ray band, with optical light curve showing correlation with gamma-ray data. Nearly 200 s of observations were obtained simultaneously from optical, X-ray, to gamma-ray (1 eV to 5 MeV), which makes it one of the exceptional cases to study the broadband spectral energy distribution during the prompt emission phase. In particular, we clearly identify, for the first time, an interesting two-break energy spectrum, roughly consistent with the standard synchrotron emission model in the fast cooling regime. Shortly after prompt emission (similar to 1100 s), a bright (R = 14.0) optical emission hump with very steep rise (alpha similar to 5.5) was observed, which we interpret as the reverse shock (RS) emission. It is the first time that the rising phase of an RS component has been closely observed. The full optical and X-ray afterglow light curves can be interpreted within the standard reverse shock (RS) + forward shock (FS) model. In general, the high-quality prompt and afterglow data allow us to apply the standard fireball model to extract valuable information, including the radiation mechanism (synchrotron), radius of prompt emission (R-GRB similar to 3 x 10(13) cm), initial Lorentz factor of the outflow (Gamma(0) similar to 250), the composition of the ejecta (mildly magnetized), the collimation angle, and the total energy budget.</P>
Variation of magnetic properties with different annealed temperatures in the Ni_3[Fe(CN)_6]_2ㆍXH_2O
M. Liu,X.F. Bian,Y.F. Xia,Z. Bao,H.S. Wu,M.X. Xu 한국물리학회 2011 Current Applied Physics Vol.11 No.3
Molecular magnet nickel(II) hexacyanoferrate(III) powder Ni_3[Fe(CN)_6]_2ㆍXH_2O was prepared by coprecipitation method. The coprecipitated powder was annealed in vacuum at different temperatures of 140,and 160 ℃. Water molecules contained in Prussian blue analogues were removed by heating. The annealing of Ni^II ferricyanide induced an inner charge transfer from Ni^II towards Fe^III to form the mixed valence system Ni(II) Ni(III) ferri-ferro-cyanide. Variation of magnetic properties with different annealed temperatures was studied by elemental analysis, powder X-ray diffraction, transmission electron microscopy, Fourier transform infrared, and Mössbauer and magnetization measurements. The differences in magnetic phase transition temperature, coercivity, remanence and effective magnetization are studied. Differences in magnetic properties may be attributed to a partial charge transfer from Ni^II to Fe^III.
Ye, Hao,Kim, Dae Hyeon,Chen, Xiankai,Sandanayaka, Atula S. D.,Kim, Jong Uk,Zaborova, Elena,Canard, Gabriel,Tsuchiya, Youichi,Choi, Eun Young,Wu, Jeong Weon,Fages, Frex301,dex301,ric,Bredas, Jean-L American Chemical Society 2018 Chemistry of materials Vol.30 No.19
<P>Near-infrared (NIR) organic light-emitting devices have aroused increasing interest because of their potential applications such as information-secured displays, photodynamic therapy, and optical telecommunication. While thermally activated delayed fluorescent (TADF) emitters have been used in a variety of high-performance organic light-emitting diodes (OLEDs) emitting in the visible spectral range, efficient NIR TADF materials have been rarely reported. Herein, we designed and synthesized a novel solution-processable NIR TADF dimeric borondifluoride curcuminoid derivative with remarkable photophysical, electroluminescence and amplified spontaneous emission properties. This dye was specifically developed to shift the emission of borondifluoride curcuminoid moiety toward longer wavelengths in the NIR region while keeping a high photoluminescence quantum yield. The most efficient OLED fabricated in this study exhibits a maximum external quantum efficiency of 5.1% for a maximum emission wavelength of 758 nm, which ranks among the highest performance for NIR electroluminescence. In addition, this NIR TADF emitter in doped thin films displays amplified spontaneous emission above 800 nm with a threshold as low as 7.5 μJ/cm<SUP>2</SUP>, providing evidence that this material is suitable for the realization of high-performance NIR organic semiconductor lasers.</P> [FIG OMISSION]</BR>