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Lilong Liu,Baoxiang Qin,Yunzhen Li,Minyi Wei,Zishuai Wu,Fang Liu,Yongfu Qiu,Jijing Luo,Rongbai Li 한국유전학회 2017 Genes & Genomics Vol.39 No.11
Awn is one of important traits during rice domestication. To understand the development of rice awn and the roles it played in rice domestication, we preliminary mapped a major QTL An-3 for awn development using chromosome segment substitution line CSSL138 developed by introgressed genomic fragments of long-awned Guangxi common wild rice (GXCWR, Oryza rufipogon Griff.) into genetic background of short-awned indica cultivar 93–11. An-3 was then fine mapped to a 7-kb region of chromosome 8. An epidermal patterning factor-like protein gene was identified as the single candidate gene corresponding to this QTL. An-3 was showed to be an allele of RAE2 and GAD1, and negatively regulated 1000-grains weight, grain length, and length–width ratio. Comparing with the coding sequences of An-3 from CSSL138, a 2- and 4-bp frameshift deletions in the second exon were identified in 93–11 and Nipponbare, respectively. Taken together, our results provide valuable natural variation in the alleles of An-3 between common wild rice and cultivated rice, which will be helpful in clarifying the mechanism of awn development and promoting the application of an-3 in genetic improvement of rice yield traits.
Colorimetric H2O2 Detection Using Ag-Nanoparticle-Decorated Silica Microspheres
Zhikun Zhang,Qingqing Liu,Yumin Liu,Ran Qi,Lilong Zhou,Zhengjie Li,Jimmy Yun,Runjing Liu,Yongqi Hu 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2020 NANO Vol.15 No.02
In view of the importance of convenient and rapid H2O2 detection for biological analysis, we herein propose Ag nanoparticle (NP)-decorated silica microspheres as a probe for instant and non-enzymatic on-site colorimetric detection of H2O2. The surface hydroxyl groups of silica microspheres were reacted with (3-mercaptopropyl)trimethoxysilane to afford thiolated microspheres that subsequently bind Ag NPs. The oxidation of residual –SH groups on the silica surface to –S–S– moieties in the presence of H2O2 induces the aggregation of decorated microspheres and is accompanied by a color change. Sensor response is found to be proportional to H2O2 concentration in the range from 100 nM to 1 mM, with UV–Vis and colorimetric detection limits determined as 10 -8 M and 10 -5 M, respectively. The developed platform is successfully used to detect H2O2 in simulated human urine and is, therefore, concluded to be sufficiently stable and selective for practical applications.
The Effect of pH on the Efficiency of an SBR Processing Piggery Wastewater
LiLong Yan,Yu Liu,Yuan Ren,Xiaohui Wang,Haijing Liang,Ying Zhang 한국생물공학회 2013 Biotechnology and Bioprocess Engineering Vol.18 No.6
To treat piggery wastewater efficiently, thehydrolysis of urea (mainly derived from swine urine) inpiggery wastewater with the change of sewage pH must beconsidered. Using activated sludge, piggery wastewaterwas treated in a sequencing batch reactor (SBR), and theeffects of influent pH on SBR processing efficiency, sludgesettle ability, and sludge activity were investigated. Theresults showed that a high influent pH value contributed tothe improvement of the removal rate of ammonia nitrogenand reduction of the chemical oxygen demand (COD). When the influent pH was between 9.0 and 9.5, the removalrate of ammonia nitrogen was higher than 90%, and thereduction of COD from its original value was 80%. Theinfluent pH had a greater influence on sludge concentrationand sludge activity. When the influent pH increased from7.0 to 9.5, the sludge concentration increased from 2,350 to3,947 mg/L in the reactor, and the activities of ammoniumoxidizing bacteria (AOB) and nitrite oxidizing bacteria(NOB) first increased and then decreased. When theinfluent pH was 9.0 and 8.0, the maximum values (0.48 gO2/(g MLSS/day) and 0.080 g O2/(g MLSS/day)) werereached, and the sludge settling ratio was nearly steadybetween 20 and 35% in each reactor.
Jiarong Li,Chang Li,Lilong Yang,Zhe Liu,Ruimin Gao,Jianshe Zhao 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.109 No.-
In order to obtain the clean fuel, two types of inorganic–organic hybrid catalysts with core–shell structureshave been prepared as efficient and reusable catalysts for oxidative desulfurization, in which ionicliquids (1-vinylimidazole and 4-vinylpyridine) were grafted and polymerized on the surface of siliconthrough free radical polymerization and polyoxometalates (H3PMo6W6O40, attributed as PMoW) wasfunctionalized on the surface of silicon. The as-prepared catalysts were characterized by FT-IR, UV–Vis,N2 adsorption–desorption, SEM and TEM. It could be proved that these two types of catalysts show highsulfur removal efficiency over 98% in the model fuel with 2000 ppm of DBT under mild reaction condition. The effective catalytic abilities of synthesized catalysts are mainly attributed to the hierarchical functionalcore–shell structures. The successful preparation of the PILs-polyoxometalates based catalysts withhigh catalytic activities could provide the demonstration of the application of polymer in oxidativedesulfurization.
Fanfeng Meng,Xue Li,Jian Fang,Yalong Gao,Lilong Zhu,Guiju Xing,Fu Tian,Yali Gao,Xuan Dong,Shuang Chang,Peng Zhao,Zhizhong Cui,Zhihao Liu 대한수의학회 2016 Journal of Veterinary Science Vol.17 No.4
The genomic diversity of Avian leukosis virus subgroup J (ALV-J) was investigated in an experimentally infected chicken. ALV-J variantsin tissues from four different organs of the same bird were re-isolated in DF-1 cells, and their gp85 gene was amplified and cloned. Ten clonesfrom each organ were sequenced and compared with the original inoculum strain, NX0101. The minimum homology of each organ rangedfrom 96.7 to 97.6%, and the lowest homology between organs was only 94.9%, which was much lower than the 99.1% homology of inoculumNX0101, indicating high diversity of ALV-J, even within the same bird. The gp85 mutations from the left kidney, which contained tumors,and the right kidney, which was tumor-free, had higher non-synonymous to synonymous mutation ratios than those in the tumor-bearing liverand lungs. Additionally, the mutational sites of gp85 gene in the kidney were similar, and they differed from those in the liver and lung, implyingthat organ- or tissue-specific selective pressure had a greater influence on the evolution of ALV-J diversity. These results suggest that moreALV-J clones from different organs and tissues should be sequenced and compared to better understand viral evolution and molecularepidemiology in the field.