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artemisinin/arabidopsis
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15 Sonuçlar
Overexpression of blue light receptor AaCRY1 improves artemisinin content in Artemisia annua L.
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Artemisinin, an effective antimalarial compound, is isolated from the medicinal plant Artemisia annua L. However, because of the low content of artemisinin in A. annua, the demand of artemisinin exceeds supply. Previous studies show that the artemisinin biosynthesis is promoted by light in A. annua.
Earlier flowering induced by over-expression of CO gene does not accompany increase of artemisinin biosynthesis in Artemisia annua.
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The early flowering gene CONSTANS (CO) from Arabidopsis thaliana was transferred into Artemisia annua using the Agrobacterium tumefaciens-mediated transformation system. The plant expression vector pBI CO was constructed by inserting the CO gene into the binary vector pBI121 under the control of
Studies on the effects of fpf1 gene on Artemisia annua flowering time and on the linkage between flowering and artemisinin biosynthesis.
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The flowering promoting factor1 ( fpf1) from Arabidopsis thaliana was transferred into Artemisia annua L. via Agrobacterium tumefaciens. The fpf1 gene was firstly inserted in the binary vector pBI121 under the control of CaMV 35S promoter to construct the plant expression vector pBIfpf1, then leaf
AaORA, a trichome-specific AP2/ERF transcription factor of Artemisia annua, is a positive regulator in the artemisinin biosynthetic pathway and in disease resistance to Botrytis cinerea.
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· Six transcription factors of APETALA2/ethylene-response factor (AP2/ERF) family were cloned and analyzed in Artemisia annua. Real-time quantitative polymerase chain reaction (RT-Q-PCR) showed that AaORA exhibited similar expression patterns to those of amorpha-4,11-diene synthase gene (ADS),
Light-Induced Artemisinin Biosynthesis Is Regulated by the bZIP Transcription Factor AaHY5 in Artemisia annua.
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Artemisinin, the frontline drug against malaria, is a sesquiterpenoid extracted from Artemisia annua. Light has been proposed to play an important role in the activation of artemisinin biosynthesis. Here, we report the basic leucine zipper transcription factor (TF) AaHY5 as a key regulator of
Characterization of xanthophyll pigments, photosynthetic performance, photon energy dissipation, reactive oxygen species generation and carbon isotope discrimination during artemisinin-induced stress in Arabidopsis thaliana.
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Artemisinin, a potent antimalarial drug, is phytotoxic to many crops and weeds. The effects of artemisinin on stress markers, including fluorescence parameters, photosystem II photochemistry, photon energy dissipation, lipid peroxidation, reactive oxygen species generation and carbon isotope
Tissue specificity and developmental pattern of amorpha-4,11-diene synthase (ADS) proved by ADS promoter-driven GUS expression in the heterologous plant, Arabidopsis thaliana.
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Amorpha-4,11-diene synthase (ADS) of Artemisia annua L. is a sesquiterpene cyclase that catalyzes the conversion of farnesyl diphosphate into amorpha-4,11-diene in the biosynthesis of the antimalarial artemisinin. To explore the mechanisms regulating the tissue-specific and developmental
AaCOI1, Encoding a CORONATINE INSENSITIVE 1-Like Protein of Artemisia annua L., Is Involved in Development, Defense, and Anthocyanin Synthesis.
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Artemisia annua is an important medicinal plant producing the majority of the antimalarial compound artemisinin. Jasmonates are potent inducers of artemisinin accumulation in Artemisisa annua plants. As the receptor of jasmonates, the F-box protein COI1 is critical to the JA signaling required for
Computational analysis of the evolution of 1-deoxy-D-xylulose-5-phosphate Reductoisomerase, an important enzyme in plant terpene biosynthesis.
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Isoprenoids are a highly diverse and important group of natural compounds. The enzyme 1-deoxy-D-xylulose-5-phosphate reductoisomerase (DXR) catalyzes a key regulatory step in the non-mevalonate isoprenoid biosynthetic pathway in eubacteria and in plant plastids. For example, in Artemisia annua DXR
[Recent advances in the study of amorpha-4,11-diene synthase and its metabolic engineering].
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Amorpha-4,11-diene synthase (ADS) can convert farnesyl pyrophosphate (FPP) to amorpha-4, 11-diene, a precursor of artemisinin. ADS plays an important role in the biosynthesis of artemisinin. This review summarizes the molecular biology and metabolic engineering study of ADS in recent years. The
Molecular cloning and characterization of the promoter of aldehyde dehydrogenase gene from Artemisia annua.
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In recent years, although several related genes had been cloned and characterized, the role of aldehyde dehydrogenase 1 (ALDH1), the newly cloned gene involved in artemisinin biosynthesis pathway, is still not clear. In this study, a 2,100-bp ALDH1 promoter region fused with GUS reporter gene was
[Molecular cloning and characterization of the 2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase gene from Artemisia annua L.].
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The plastidial methylerythritol phosphate(MEP) pathway provides 5-carbon precursors to the biosynthesis of isoprenoid (including artemisinin). 2-C-Methyl-D-erythritol-4-phosphate cytidylyltransferase (MCT) is the third enzyme of the MEP pathway, which catalyzes 2-C-methyl-D-erythritol-4-phosphate to
[Molecular cloning and functional characterization of the gene encoding hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate reductase gene from Artemisia annua L.].
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Artemisinin is the first choice for malaria treatment. The plastidial MEP pathway provides 5-carbon precursors (IPP and its isomer DMAPP) for the biosynthesis of isoprenoid (including artemisinin). Hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate reductase (HDR) is the last enzyme involved in the MEP
AaMYB1 and its orthologue AtMYB61 affect terpene metabolism and trichome development in Artemisia annua and Arabidopsis thaliana.
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The effective anti-malarial drug artemisinin (AN) isolated from Artemisia annua is relatively expensive due to the low AN content in the plant as AN is only synthesized within the glandular trichomes. Therefore, genetic engineering of A. annua is one of the most promising approaches for improving
Molecular cloning and characterization of peroxiredoxin from Toxoplasma gondii.
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A cDNA of 1.1 kb comprising the gene encoding the peroxiredoxin of Toxoplasma gondii (TgPrx) has been cloned. The open reading frame of 591 bp was translated into a protein of 196 amino acids with a molecular mass of 25 kDa. Conserved 2 cysteine domains of Phe-Val-Cys-Pro and Glu-Val-Cys-Pro
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