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- 저자 : Pham T. T(Trinh (검색결과 2 건)
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The Global Factors Driving Common Inflation In ASEAN
Trinh,Pham T. T(Trinh,Pham T. T ),Nhan,Le P. A.(Nhan,Le P. A. ) People&Global Business Association 2023 Global Business and Finance Review Vol.28 No.4
Purpose: This study investigates the comovements of inflation across ASEAN countries and identifies the global factors driving the common inflation dynamics of the region. Design/methodology/approach: The study uses a two-step approach. The dynamic latent factor model is first employed to estimate the common inflation of the region in the period between 2000Q1 and 2022Q2. In the second step, a bound test approach to autoregressive distributed lag (ARDL) methodology is employed to estimate the model of common inflation, which is constructed based on the aggregate supply - aggregate demand (AS-AD) framework. Findings: The study finds a common factor of inflation across ASEAN countries. The analysis of variance decomposition indicates the significant role of common inflation in the variations of individual countries' inflation. World economic growth, oil price change, non-fuel commodity price change, and trade openness are the main drivers of ASEAN common inflation in both short and long terms. Research limitations/implications: The study focuses mainly on supply-side factors, although some demand-side factors are involved. Future studies should pay more concerns on the trade linkages among regional countries and the similarities in goals in the region. Originality/value: The study examines the common inflation component across ASEAN countries, which has not been sufficiently investigated. It also evaluates the drivers at the global level of common inflation, which has limited empirical evidence.
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Ly H. Luu,Pham Hang L. B.,Huynh Hue T. T.,Nguyen Linh N.,Vu Trinh T.,Le Hien T. T. 한국식물생명공학회 2022 Plant biotechnology reports Vol.16 No.2
Panax vietnamensis Ha et Grushv., an important medicinal plant in Vietnam, consists of several valuable ginsenosides. Compared to other Panax species, molecular and in silico studies concerning its transcriptomes and ginsenoside biosyn- thesis-related genes are still lacking. In this study, the transcriptomes of 1-year-old leaves and roots of P. vietnamensis were sequenced and analyzed using the Illumina system. The expression of the selected ginsenoside biosynthesis-related genes was confirmed using real-time PCR. In total, 42,724, 41,564, and 43,021 unigenes were assembled for leaves, roots, and leaf and root tissues, respectively. More than 60% of the unigenes from both tissues were functionally annotated using at least one database from the Kyoto encyclopedia of genes and genomes, Pfam, gene ontology, the National Center for Biotechnol- ogy Information (NCBI) non-redundant protein sequence database, and the evolutionary genealogy of genes. Furthermore, the expression of the predominant transcripts in each cDNA library was analyzed and identified. In addition, 457 unigenes encoding the enzymes involved in ginsenoside biosynthesis were identified. Most genes encoding enzymes related to ginse- noside biosynthesis via both MVA and non-MVA pathways are indicated. Quantitative PCR analysis showed that β-amyrin synthase (β-AS), cytochrome P450 (CYP716A53v2, CYP716A52v2), and UDP-glycosyl transferase (UGT74AE2) were highly expressed, more so in the roots than in the leaves. Our results may answer the question of how genes are expressed and whether ginsenosides are produced and accumulated in the first growing year of P. vietnamensis leaves and roots. This first comprehensive transcriptome data of 1-year-old leaves and roots of P. vietnamensis is useful for further investigation of gin- seng development, biosynthesis, major secondary metabolite pathways, and related gene expression in different tissues and developmental stages. Data also provide useful information for improving ginseng biosynthesis using biotechnology tools.
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