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| 1 | The Genome of Artemisia annua Provides Insight into the Evolution of Asteraceae Family and Artemisinin Biosynthesis显示文摘Artemisia annua,通常已知的同样香甜的苦恼或 Qinghao,是到中国的一个灌木土著人并且长被用于药用的目的。A。annua 现在作为有势力抗疟药混合物的唯一的生来的来源全球性被栽培, artemisinin。这里,我们报导 A 的 1.74-gigabase 染色体的一个高质量的草稿集会。annua,高度异质接合,富于重复定序,并且包含 63 ? 226 编码蛋白质的基因,在定序的植物种类之中的最大的数字之一。我们发现了那,作为在 Asteraceae 的一些定序的染色体之一, A。annua 染色体包含对这大被子植物 clade 特定的很多基因。尤其是,扩大和编码涉及萜烯生合成的酶的基因的功能的多样化与 artemisinin biosynthetic 小径的进化一致。我们进一步由介绍那 A 的 transcriptome 揭示了。annua 发展了复杂 transcriptional 规章的网络位于 \O 下面 artemisinin 生合成。把转基因的 A 基于我们产生了的全面 genomic 和 transcriptomic 分析。artemisinin 高级的生产的 annua 线,它现在为大规模生产准备好了并且将从而帮助遇见增加 artemisinin 的全球需求的挑战。 | Qian Shen Lida Zhang Zhihua Liao Shengyue Wang Tingxiang Yan Pu Shi Meng Liu Xueqing Fu Qifang Pan Yuliang Wang Zongyou Lv Xu Lu Fangyuan Zhang Weimin Jiang Yanan Ma Minghui Chen Xiaolong Hao Ling Li Yueli Tang Gang Lv Yan Zhou Xiaofen Sun Peter E. Brodelius Jocelyn K.C. Rose Kexuan Tang | 2018 | Molecular Plant2018,11,6: | 47 |
| 2 | Increased Vitamin C Content Accompanied by an Enhanced Recycling Pathway Confers Oxidative Stress Tolerance in Arabidopsis显示文摘Vitamin C(L-ascorbic acid,AsA) has important antioxidant and metabolic functions in both plants and animals.Once used,ascorbic acid can be regenerated from its oxidized form in a reaction catalyzed by dehydroascorbate reductase(DHAR,EC 1.8.5.1).To analyze the physiological role of DHAR catalyzing the reduction of DHA to ascorbate in environmental stress adaptation,we examined whether increasing the level of AsA through enhanced AsA recycling would limit the deleterious effects of oxidative stress.A chimeric construct consisting of the double CaMV35S promoter fused to the Myc-dhar gene was introduced into Arabidopsis thaliana.Transgenic plants were biochemically characterized and tested for responses to oxidative stress.Western blot indicated that the dhar-transgene was successfully expressed.In homozygous T4 transgenic seedlings,DHAR overexpression was increased up to 1.5 to 5.4 fold,which enhanced foliar ascorbic acid levels 2-to 4.25-fold and ratio of AsA/DHA about 3-to 16-fold relative to wild type.In addition,the level of glutathione,the reductant used by DHAR,also increased as did its redox state.When whole plants were treated with high light and high temperature stress or in vitro leaf discs were subjected to 10 μM paraquat,transgenic plants showed a larger AsA pool size,lower membrane damage,and a higher level of chlorophyll compared with controls.These data suggested that increasing the plant vitamin C content through enhanced ascorbate recycling could limit the deleterious effects of environmental oxidative stress. | zinan wang Ying Xiao Wansheng Chen Kexuan Tang Lei Zhang | 2010 | Journal of Integrative Plant Biology2010,52,4: | 16 |
| 3 | Transcriptional regulation of artemisinin biosynthesis in Artemisia annua L.显示文摘Artemisinin, also known as qinghaosu, a sesquiterpene endoperoxide lactone isolated from the Chinese medicinal plant Artemisia annua L., is the most effective antimalarial drug which has saved millions of lives.Due to its great antimalarial activity and low content in wild A. annua plants, researches focused on enhancing the artemisin yield in plants became a hotspot. Several families of transcription factors have been reported to participate in regulating the biosynthesis and accumulation of artemisinin.In this review, we summarize recent investigations in these fields, with emphasis on newly identified transcription factors and their functions in artemisinin biosynthesis regulation, and provide new insight for further research. | Qian Shen Tingxiang Yan Xueqing Fu Kexuan Tang | 2016 | Science Bulletin2016,61,1: | 10 |
| 4 | Diversity and versatile functions of metallothioneins produced by plants:A review显示文摘Metal ions are essential for plant growth and development,but in excess,these compounds can become highly toxic.Plants have adopted numerous ways to maintain metal homeostasis while mitigating adverse effects of excess metal ions,including phytochelatin and the metal-chelating proteins metallothioneins(MTs).A family of cysteine(Cys)-rich,intracellular,and low-molecular-weight(4-8 kDa)MTs are proteins found in nearly all phyla including plants,animals,and fungi,and they have the potential to scavenge reactive oxygen species and detoxify toxic metals including copper,cadmium,and zinc.Based on their Cys numbers and residues,MTs have been categorized into three major classes.Class I MTs,which have highly conserved Cys residues,are found in animals,while class II MTs,with less conserved Cys residues,are present in plants and are classified further into four groups.Class III MTs include phytochelatins,a group of enzymatically synthesized Cys-rich proteins.The MTs have been an area of interest for five decades with extensive studies,which have been facilitated by advancements in instrumental techniques,protein science,and molecular biology tools.Here,we reviewed current advances in our understanding of the regulation of MT biosynthesis,their expression,and their potential roles in the alleviation of abiotic stresses(i.e.,drought,salinity,and oxidative stresses)and heavy metal detoxification and homeostasis. | SAEED-UR-RAHMAN Muhammad KHALD Nan HUI Sadaf-Ilyas KAYANI Kexuan TANG | 2020 | Pedosphere2020,30,5: | 5 |
| 5 | Has the Belt and Road Initiative Improved the Quality of Food Imported by Chinese Enterprises?显示文摘Using micro-level data from 2009-2015 and the difference-in-difference method,this paper empirically examines the impact of the Belt and Road Initiative(BRI)on the quality of food imported by Chinese enterprises from BRI countries.Our baseline results show that the BRI significantly improved the quality of food imported from these countries.Further investigation reveals that trade patterns,ownership types,import regions,transportation methods,and product quality show significant heterogeneous effects in influencing the quality of imported food.A mechanism analysis indicates that the BRI improves the quality of imported food through three main channels:import trade environment enhancement,competition effect,and consumption upgrading,with the competition effect having the largest impact compared with the other two channels.Our findings suggest that China should not only improve the infrastructure in BRI countries but also use the BRI as an opportunity to enhance the level of cooperation with BRI countries and maintain stability and sustainability in cooperation with them. | Kexuan Zhou Sanjay Kumar Futao Lu Qiaoyun Fang Linhui Yu | 2022 | China & World Economy2022,30,2: | 4 |
| 6 | The transcription factors TLR1 and TLR2 negatively regulate trichome density and artemisinin levels in Artemisia annua显示文摘The important antimalarial drug artemisinin is biosynthesized and stored in Artemisia annua glandular trichomes and the artemisinin content correlates with trichome density;however,the factors affecting trichome development are largely unknown.Here,we demonstrate that the A.annua R2R3 MYB transcription factor TrichomeLess Regulator 1(TLR1)negatively regulates trichome development.In A.annua,TLR1 overexpression lines had 44.7%–64.0%lower trichome density and 11.5%–49.4%lower artemisinin contents and TLR1-RNAi lines had 33%–93.3%higher trichome density and 32.2%–84.0%higher artemisinin contents compared with non-transgenic controls.TLR1 also negatively regulates the expression of anthocyanin biosynthetic pathway genes in A.annua.When heterologously expressed in Arabidopsis thaliana,TLR1 interacts with GLABROUS3a,positive regulator of trichome development,and represses trichome development.Yeast two-hybrid and pull-down assays indicated that TLR1 interacts with the WUSCHEL homeobox(WOX)protein AaWOX1,which interacts with the LEAFY-like transcription factor TLR2.TLR2 overexpression in Arabidopsis and A.annua showed that TLR2 reduces trichome development by reducing gibberellin levels.Furthermore,artemisinin contents were 19%–43%lower in TLR2-overexpressing A.annua plants compared to controls.These data indicate that TLR1 and TLR2 negatively regulate trichome density by lowering gibberellin levels and may enable approaches to enhance artemisinin yields. | Zongyou Lv JinXing Li Shi Qiu Fei Qi Hang Su Qitao Bu Rui Jiang Kexuan Tang Lei Zhang Wansheng Chen | 2022 | Journal of Integrative Plant Biology2022,64,6: | 2 |
| 7 | AaWRKY17, a positive regulator of artemisinin biosynthesis, is involved in resistance to Pseudomonas syringae in Artemisia annua显示文摘Artemisia annua,a traditional Chinese medicinal plant,remains the only plant source for artemisinin production,yet few genes have been identified to be involved in both the response to biotic stresses,such as pathogens,and artemisinin biosynthesis.Here,we isolated and identified the WRKY transcription factor(TF)AaWRKY17,which could significantly increase the artemisinin content and resistance to Pseudomonas syringae in A.annua.Yeast one-hybrid(Y1H),dual-luciferase(dual-LUC),and electrophoretic mobility shift assay(EMSA)results showed that AaWRKY17 directly bound to the W-box motifs in the promoter region of the artemisinin biosynthetic pathway gene amorpha-4,11-diene synthase(ADS)and promoted its expression.Real-time quantitative PCR(RT-qPCR)analysis revealed that the transcript levels of two defense marker genes,Pathogenesis-Related 5(PR5)and NDR1/HIN1-LIKE 10(NHL10),were greatly increased in AaWRKY17-overexpressing transgenic A.annua plants.Additionally,overexpression of AaWRKY17 in A.annua resulted in decreased susceptibility to P.syringae.These results indicated that AaWRKY17 acted as a positive regulator in response to P.syringae infection.Together,our findings demonstrated that the novel WRKY transcription factor AaWRKY17 could potentially be used in transgenic breeding to improve the content of artemisinin and pathogen tolerance in A.annua. | Tiantian Chen Yongpeng Li Lihui Xie Xiaolong Hao Hang Liu Wei Qin Chen Wang Xin Yan Kuanyu Wu-Zhang Xinghao Yao Bowen Peng Yaojie Zhang Xueqing Fu Ling Li Kexuan Tang | 2021 | Horticulture Research2021,8,1: | 2 |
| 8 | 4K-DMDNet:diffraction model-driven network for 4K computer-generated holography显示文摘Deep learning offers a novel opportunity to achieve both high-quality and high-speed computer-generated holography(CGH).Current data-driven deep learning algorithms face the challenge that the labeled training datasets limit the training performance and generalization.The model-driven deep learning introduces the diffraction model into the neural network.It eliminates the need for the labeled training dataset and has been extensively applied to hologram generation.However,the existing model-driven deep learning algorithms face the problem of insufficient constraints.In this study,we propose a model-driven neural network capable of high-fidelity 4K computer-generated hologram generation,called 4K Diffraction Model-driven Network(4K-DMDNet).The constraint of the reconstructed images in the frequency domain is strengthened.And a network structure that combines the residual method and sub-pixel convolution method is built,which effectively enhances the fitting ability of the network for inverse problems.The generalization of the 4K-DMDNet is demonstrated with binary,grayscale and 3D images.High-quality full-color optical reconstructions of the 4K holograms have been achieved at the wavelengths of 450 nm,520 nm,and 638 nm. | Kexuan Liu Jiachen Wu Zehao He Liangcai Cao | 2023 | Opto-Electronic Advances2023,6,5: | 1 |
| 9 | Current Opinions on the Functions of Tocopherol Based on the Genetic Manipulation of Tocopherol Biosynthesis in Plants显示文摘As a member of an important group of lipid soluble antioxidants, tocopherols play a paramount role in the daily diet of humans and animals. Recently, genes required for tocochromanol biosynthesis pathway have been identified and cloned with the help of genomics-based approaches and molecular manipulation in the model organisms: Arabidopsis thaliana and Synechocystis sp. PCC 6803. At the basis of these foundations, genetic manipulation of tocochromanol biosynthesis pathway can give rise to strategies that enhance the level of tocochromanol content or convert the constitution of tocochromanol. In addition, genetic manipulations of the tocochromanol biosynthesis pathway provide help for the study of the function of tocopherol in plant systems. The present article summarizes recent advances and pays special attention to the functions of tocopherol in plants. The roles of tocopherol in the network of reactive oxygen species, antioxidants and phytohormones to maintain redox homeostasis and the functions of tocopherol as a signal molecule in chloroplast-to- nucleus signaling to regulate carbohydrate metabolism are also discussed. | Yin Li Zinan Wang Xiaofen Sun Kexuan Tang | 2008 | Journal of Integrative Plant Biology2008,50,9: | 1 |
| 10 | Asymmetric interfaces and high-TC ferromagnetic phase in La_(0.67)Ca_(0.33)MnO_(3)/SrRuO_(3)superlattices显示文摘Interfacial magnetism in functional oxide heterostructures not only exhibits intriguing physical phenomena but also implies great potential for device applications.In these systems,interfacial structural and electronic reconstructions are essential for improving the stability and tunability of the magnetic properties.In this work,we constructed ultra-thinLa_(0.67)Ca_(0.33)MnO_(3)/SrRuO_(3)(SRO)layers into superlattices,which exhibited a robust ferromagnetic phase.The high Curie temperature(TC)reaches 291 K,more than 30 K higher than that of bulk LCMO.We found that the LCMO/SRO superlattices consisted of atomically-sharp and asymmetric heterointerfaces.Such a unique interface structure can trigger a sizable charge transfer as well as a ferroelectric-like polar distortion.These two interfacial effects cooperatively stabilized the high-T_(C)ferromagnetic phase.Our results could pave a promising approach towards effective control of interfacial magnetism and new designs of oxide-based spintronic devices. | Lili Qu Da Lan Liang Si Chao Ma Shasha Wang Liqiang Xu Kexuan Zhang Feng Jin Zixun Zhang Enda Hua Binbin Chen Guanyin Gao Feng Chen Haifeng Du Karsten Held Lingfei Wang Wenbin Wu | 2021 | Nano Research2021,14,10: | 1 |
| 11 | Realizing the highly reversible Zn^(2+)and Na^(+) dual ions storage in high-crystallinity nickel hexacyanoferrate microcubes for aqueous zinc-ion batteries显示文摘Prussian blue analogues(PBAs)with the 3D open framework are regarded as promising cathode candidates for aqueous Zinc ion batteries(ZIBs).Among various PBAs,nickel hexacyanoferrate(NiHCF)has attracted considerable attention because of its high operating voltage and economic merit.However,the cyclability of NiHCF is unsatisfactory due to poor structural stability during Zn^(2+) ions insertion/deinsertion.Moreover,the ion storage mechanism of NiHCF in aqueous electrolytes has not been fully revealed yet.Herein,high-crystallinity NiHCF(HC-NiHCF)microcubes with improved structural stability and larger crystal plane spacing are synthesized.For the first time,highly reversible Zn2+ions and Na+ions co-insertion/extraction are achieved for the HC-NiHCF microcubes in mixed aqueous electrolyte,as evidenced by various observations including two separated discharge plateaus and sequential changes of Na 1s and Zn 2p signals in ex-situ X-ray photoelectron spectroscopy(XPS).As a result,a high specific capacity of 73.9 mAh g^(−1) is obtained for the HC-NiHCF microcubes at 0.1 A g−1,combined with enhanced cycle stability(75%vs.16.4%)over 1000 cycles at 2 A g^(−1).The reversible Zn^(2+) ions and Na+ions co-insertion in HC-NiHCF microcubes reveals a new ion storage mechanism of Ni-based PBAs in aqueous electrolytes. | Kexuan Wang Zhu Xu Heng Li Huibo Wang Mingzheng Ge Jilei Liu Shengwen Li Zekun Hu Mengyu Zhu Yanyan Zhang Yuxin Tang Shi Chen | 2023 | Journal of Materials Science & Technology2023,,33: | 1 |
| 12 | Molecular cloning and expression profile of a jasmonate biosynthetic pathway gene for allene oxide cyclase from Hyoscyamus niger显示文摘 | Keji Jiang Zhihua Liao Yan Pi Zhuoshi Huang Rong Hou Ying Cao Qing Wang Xiaofen Sun Kexuan Tang | 2008 | Molecular Biology2008,,3: | 1 |
| 13 | Northeast power system simulator(NEPSS)显示文摘1.IntroductionThe Northeast Power System is one of the four bulk powersystems in China,which covers the provinces of Liaoning,Jilin,Heilongjiang and a small part of Inner Mongolia.The total installedcapacity in 1990 was 21,300 MW and the peak demand was 13,600MW.The Control Center is in Shenyang.The dispatching automationsystem which is mainly composed of a dual computer system(2XVAX785)was installed and put into operation in 1988.The plan | Gu Yongchang Wang Xinfeng Li Wenping Sun Guosheng Electrical Engineering Department of Tsinghua UniversityYang Songqi Xu Muliang Yang Kexuan Huang Yingju Electric Power Dispatching and Communication Bureau of Northeast Power Administration.P.R.China | 1992 | Electricity1992,,4: | 1 |
| 14 | A review: recent advances and future prospects of taxol-producing endophytic fungi显示文摘 | Xuanwei Zhou Huifang Zhu Lu Liu Juan Lin Kexuan Tang | 2010 | Applied Microbiology and Biotechnology2010,,6: | 1 |
| 15 | Ultra strong and ductile eutectic high entropy alloy fabricated by selective laser melting显示文摘With important application prospects, eutectic high entropy alloys have received extensive attention for their excellent strength and ductility in a large temperature range. The excellent casting characteristics of eutectic high entropy alloys make it possible to achieve well manufacturability of selective laser melting.For the first time, we have achieved crack-free eutectic high entropy alloy fabricated by selective laser melting, which has excellent mechanical properties in a wide temperature range from -196 ℃ to 760 ℃ due to ultra-fine eutectic lamellar spacing of 150–200 nm and lamellar colony of 2–6 μm. Specifically,the room temperature tensile strength exceeds 1400 MPa and the elongation is more than 20%, which significantly improved compared with those manufactured by other techniques with lower cooling rate. | Fan Yang Lilin Wang Zhijun Wang Qingfeng Wu Kexuan Zhou Xin Lin Weidong Huang | 2022 | Journal of Materials Science & Technology2022,,11: | 1 |
| 16 | Transgenic approach to increase artemisinin content in Artemisia annua L.显示文摘 | Kexuan Tang Qian Shen Tingxiang Yan Xueqing Fu | 2014 | Plant Cell Reports2014,,4: | 1 |
| 17 | scNanoATAC-seq:a long-read single-cell ATAC sequencing method to detect chromatin accessibility and genetic variants simultaneously within an individual cell显示文摘Dear Editor,The accessible chromatin regions were enriched in regulatory elements in human genome and many genetic variations associated with human diseases were identified within them.1 Single-cell assay for transposase-accessible chromatin using sequencing(scATAC-seq)on the next-generation sequencing(NGS)platform is a well-established method to detect open chromatin regions within an individual cell.2 However,there remain challenges in detection of large-scale structural variations(SVs,including insertions,deletions,duplications,inversions and translocations)and haplotype phasing from scATAC-seq data,which can be well resolved by third-generation sequencing(TGS)platform-based single-molecule long-read sequencing.To integrate advantages of long-read sequencing into scATAC-seq,we developed single-cell assay for transposase‐accessible chromatin on Nanopore sequencing platform(scNanoATAC-seq),a platebased scATAC-seq method suitable for TGS platform(Supplementary information,Fig.S1). | Yuqiong Hu Zhenhuan Jiang Kexuan Chen Zhangxian Zhou Xin Zhou Yan Wang Jingwei Yang Bo Zhang Lu Wen Fuchou Tang | 2023 | Cell Research2023,33,1: | 1 |
| 18 | Transgenic rice homozygous lines expressing GNA showed enhanced resistance to rice brown planthopper显示文摘Mature seed-derived callo from two elite Chinese japonica rice (Oryza saliva L.) cultivars Eyi 105 and Ewan 5 were co-transformed with two plasmids, pWRG1515 and pRSSGNAl, containing the selectable marker hygromy-cin phosphotransferase gene (hpt), the reporter β-glu-curonidase gene (gusA) and the snowdrop (Galanthus nivalis) lectin gene (gna) via particle bombardment. 61 independent transgenic rice plants were regenerated from 329 bombarded calli. 79% transgenic plants contained all the three genes, revealed by PCR/Southern blot analysis. Western blot analysis revealed that 36 out of 48 gna-containing transgenic plants expressed GNA (75%) at various levels with the highest expression being approximately 0.5% of total soluble protein. Genetic analysis confirmed Mendelian segregation of transgenes in progeny. From the R2 generations whose R1 parent plants showing 3:1 Mendelian segregation patterns, we identified five independent homozygous lines containing and expressing all the three transgenes. Insect | SUN Xiaofen TANG Kexuan WAN Bingliang Ql Huaxiong LU Xinggui | 2001 | Chinese Science Bulletin2001,46,20: | 1 |
| 19 | Molecular cloning, characterization and expression of a novel jasmonate-dependent defensin gene from Ginkgo biloba显示文摘 | Guoan Shen Yongzhen Pang Weisheng Wu Zhiqi Miao Hongmei Qian Lingxia Zhao Xiaofen Sun Kexuan Tang | 2005 | Journal of Plant Physiology2005,,10: | 1 |
| 20 | Highly Enantioselective Hydrogenation of β,β‐Disubstituted Nitroalkenes显示文摘 | Shengkun Li Kexuan Huang Bonan Cao Jiwen Zhang Wenjun Wu Xumu Zhang | 2012 | Angew Chem Int Ed2012,,34: | 1 |