http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Inorganic polymer photoresist for direct ceramic patterning by photolithography
Pham, Tuan Anh,Kim, Pilnam,Kwak, Moonkyoo,Suh, Kahp Y.,Kim, Dong-Pyo Royal Society of Chemistry 2007 Chemical communications Vol.2007 No.39
<P>A novel negative, inorganic polymer photoresist was demonstrated to be suitable for simple and direct fabrication of tribological SiCN-based ceramic microstructures <I>via</I> UV photolithography and subsequent pyrolysis at 800 °C.</P> <P>Graphic Abstract</P><P>A novel negative, inorganic polymer photoresist was demonstrated to be suitable for simple and direct fabrication of tribological SiCN-based ceramic microstructures <I>via</I> UV photolithography and subsequent pyrolysis at 800 °C. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b708480c'> </P>
Tuan, Pham Anh,Kim, Jae Kwang,Kim, Haeng Hoon,Lee, Sook Young,Park, Nam Il,Park, Sang Un American Chemical Society 2011 Journal of agricultural and food chemistry Vol.59 No.10
<P>Phytoene synthase (PSY) and phytoene desaturase (PDS), which catalyze the first and second steps of the carotenoid biosynthetic pathway, respectively, are key enzymes for the accumulation of carotenoids in many plants. We isolated 2 partial cDNAs encoding PSY (<I>AsPSY-1</I> and <I>AsPSY-2</I>) and a partial cDNA encoding PDS (<I>AsPDS</I>) from <I>Allium sativum</I>. They shared high sequence identity and conserved motifs with other orthologous genes. Quantitative real-time PCR analysis was used to determine the expression levels of AsPSY1, AsPSY2, and AsPDS in the bulbils, scapes, leaves, stems, bulbs, and roots of garlic. High-performance liquid chromatography demonstrated that carotenoids were not biosynthesized in the underground organs (roots and bulbs), but were very abundant in the photosynthetic organs (leaves) of <I>A. sativum</I>. A significantly higher amount of β-carotene (73.44 μg·g<SUP>–1</SUP>) was detected in the leaves of <I>A. sativum</I> than in the other organs.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jafcau/2011/jafcau.2011.59.issue-10/jf2009827/production/images/medium/jf-2011-009827_0003.gif'></P>
Pham Anh Tuan,Nam Il Park(박남일),Haeng Hoon Kim(김행훈),Sang Un Park(박상언) 충남대학교 농업과학연구소 2010 농업과학연구 Vol.37 No.3
Farnesyl diphosphate synthase (FPS) catalyzes the biosynthesis of farnesyl diphosphate, a precursor for many important terpenoid products. A cDNA encoding FPS was first isolated from Allium sativum (AsFPS) using rapid amplification of cDNA ends (RACE) PCR. The sequence of AsFPS contains an open reading frame encoding a protein of 341 amino acids with a predicted molecular mass of 39.61 kDa. Alignment of AsFPS deduced amino acid revealed high identities with other plants ranging from 79% to 85% and showed 2-high conserved aspartate-rich motifs known to be important for FPS activity. Furthermore, AsFPS expression was stronger in the green organs such as bulbils, scapes, leaves, stems, but weaker in bulbs and roots than on-green organs of A. sativum.
Tuan, Pham Anh,Kim, Young Seon,Kim, Yeji,Thwe, Aye Aye,Li, Xiaohua,Park, Chang Ha,Lee, Sook Young,Park, Sang Un Elsevier 2018 Saudi journal of biological sciences Vol.25 No.8
<P><B>Abstract</B></P> <P> <I>Scutellaria lateriflora</I> is well known for its medical applications because of the presence of flavanoids and alkaloids. The present study aimed to explore the molecular aspects and regulations of flavanoids. Five partial cDNAs encoding genes that are involved in the flavonoid biosynthetic pathway: phenylalanine ammonia lyase (SlPAL), cinnamate 4-hydroxylase (SlC4H), 4-coumaroyl CoA ligase (Sl4CL), chalcone synthase (SlCHS), and chalcone isomerase (SlCHI) were isolated from <I>S. lateriflora</I>. Organ expression analysis showed that these genes were expressed in all organs analyzed with the highest levels correlating with the richest accumulation of wogonin in the roots. Baicalin and baicalein differentially accumulated in <I>S. lateriflora</I> plants, with the highest concentration of baicalin and baicalein detected in the leaves and stems, respectively. Exogenous methyl jasmonate (MeJA) significantly enhanced the expression of <I>SlCHS</I> and <I>SlCHI</I>, and accumulation of baicalin (22.54 mg/g), baicalein (1.24 mg/g), and wogonin (5.39 mg/g) in <I>S. lateriflora</I> hairy roots. In addition, maximum production of baicalin, baicalein, and wogonin in hairy roots treated with MeJA was approximately 7.44-, 2.38-, and 2.12-fold, respectively. Light condition increased the expression level of <I>SlCHS</I>, the first committed step in flavonoid biosynthesis in hairy roots of <I>S. lateriflora</I> after 3 and 4 weeks of development compared to the dark condition. Dark-grown hairy roots contained a higher content of baicalin and baicalein than light-grown hairy roots, while light-grown hairy roots accumulated more wogonin than dark-grown hairy roots. These results may helpful for the metabolic engineering of flavonoids biosynthesis in <I>S. lateriflora</I>.</P>
Hairy Root Culture of Platycodon grandiflorum Transformed with Agrobacterium rhizogenes
Pham Anh Tuan,Nam Il Park,Xiaohua Li,Yong Kyoung Kim,Sang Un Park 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
We developed an efficient protocol for transformation of balloon flower (Platycodon grandiflorum) root cultures by using cotyledon leaf explants that were infected by Agrobacterium rhizogenes. We found that four different strains of A. rhizogenes differed in their ability to transform P. grandiflorum hairy root cultures. We also found correct antibiotics concentration for selection after transformation by Agrobacterium. Our results demonstrate that use of suitable strain of A. rhizogenes and correct level of antibiotics for the hairy root culture, and may allow to study and apply of valuable metabolites like phenolic compounds from P. grandiflorum hairy root culture.
Pham Anh Tuan,Nam Il Park,Xiaohua Li,Hui Xu,Yong Kyoung Kim,Sang Un Park 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
Allium sativum, belongs to a member of the onion family (Alliaceae) are economically important vegetables because of the culinary value and medicinal purpose. Using PCR strategy with degenerated primers targeted to conserved regions of orthologous phenylalanine ammonia-lyase (PAL) and cinnamate 4-hydroxylase (C4H) sequences available, full-length PAL and C4H from A. sativum. The amino acid sequence of these genes is highly conserved, particularly AsPAL and AsC4H has greater than 70% amino acid identity to other plants. AsPAL and AgC4H were most highly expressed in roots of A. sativum, whereas lowest level of transcript was detected in flower. Phenolic compounds most highly produced in flowers of A. sativum. The presented sequences and expression an alysis of PAL and C4H will provide possible material to enhance the understading of phenolic compounds synthesis in A. sativum.