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Installing the neurospora carotenoid pathway in plants enables cytosolic formation of provitamin A and its sequestration in lipid droplets

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Molecular Plant 2023年第6期16卷 1066-1081页

作者： xiongjie Zheng Yasha Zhang Aparna Balakrishna kit xi liew Hendrik N.J.Kuijer Ting Ting xiao Ikram Blilou Salim Al-Babili The BioActives Lab Center for Desert Agriculture(CDA)Biological and Environmental Science and Engineering(BESE)King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia The Laboratory of Plant Cell and Developmental Biology(LPCDB) Center for Desert Agriculture(CDA)Biological and Environmental Science and Engineering(BESE)King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Present address:College of Plant Science and Technology Bejing Key Laboratory for Agricultural Application and New TechniqueBeijing University of AgricultureBeijing 102206China

Vitamin A deficiency remains a severe global health issue,which creates a need to biofortify crops with provitamin A carotenoids(PACs).Expanding plant cell capacity for synthesis and storing of PACs outside the plastids is a promising biofortification strategy that has been little ***,we engineered PAC formation and sequestration in the cytosol of Nicotiana benthamiana leaves,Arabidopsis seeds,and citrus callus cells,using a fungal(Neurospora crassa)carotenoid pathway that consists of only three enzymes converting C5 isopentenyl building blocks formed from mevalonic acid into PACs,including β-*** strategy led to the accumulation of significant amounts of phytoene and γ-and β-carotene,in addition to fungal,health-promoting carotenes with 13 conjugated double bonds,such as the PAC torulene,in the *** the isopentenyl diphosphate pool by adding a truncated Arabidopsis hydroxymethylglutaryl-coenzyme A reductase substantially increased cytosolic carotene *** carotenes accumulate in cytosolic lipid droplets(CLDs),which represent a novel sequestering sink for storing these pigments in plant ***,β-carotene accumulated in the cytosol of citrus callus cells was more light stable compared to compared with plastidialβ-***,engineering cytosolic carotene formation increased the number of large-sized CLDs and the levels of β-apocarotenoids,including retinal,the aldehyde corresponding to vitamin ***,our study opens up the possibility of exploiting the high-flux mevalonic acid pathway for PAC biosynthesis and enhancing carotenoid sink capacity in green and non-green plant tissues,especially in lipid-storing seeds,and thus paves the way for further optimization of carotenoid biofortification in crops.

关键词： Neurospora crassa carotenoid biosynthesis provitamin A metabolic engineering synthetic metabolism cytosolic lipid droplets carotenoid sequestration carotenoid stability

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Recent advances in functional utilisation of environmentally friendly and recyclable high-performance green biocomposites: A review

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Chinese Chemical Letters 2024年第4期35卷 73-85页

作者： Guiyang Zheng Xuelian Kang Haoran Ye Wei Fan Christian Sonne Su Shiung Lam Rock Keey liew Changlei xia Yang Shi Shengbo Ge Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China School of Textile Science and Engineering&Key Laboratory of Functional Textile Material and Product of Ministry of Education Xi'an Polytechnic UniversityXi'an 710048China Department of Bioscience Arctic Research Centre(ARC)Aarhus UniversityFrederiksborgvej 399PO Box 358DK-4000 RoskildeDenmark Sustainability Cluster School of EngineeringUniversity of Petroleum&Energy StudiesDehradunUttarakhand 248007India Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)Universiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Center for Transdisciplinary Research Saveetha Institute of Medical and Technical SciencesSaveetha UniversityChennai 600072India NV Western PLT Georgetown 10400PenangMalaysia Aerospace Kaitian Environmental Technology Co. Ltd.Changsha 410000China Hunan Hongsen Novel Material Technology Co. Ltd.Yiyang 413407China

Humans have relied on biomass for survival and development since the Stone Age. All aspects of human needs for materials are covered by tools, fuel, and buildings. Nowadays, metals and petroleum-based materials are widely used in highly developed industries. Unfortunately, environmental contamination and the loss of natural resources have led to the reemergence of biomass resources as efficient and sustainable energy sources. Notably, simple and direct applications can no longer meet the demand for functionalization, high performance of materials and construction materials. Therefore, it is imperative to modify biomass and combine its utilisation to produce functionalization and high performance materials. For example, construction materials with superior mechanical properties and water resistance can be produced by reinforcing fibres to facilitate crosslinking. Water-oil separation or adsorption effects of hydrogels and aerogels are determined by the porosity and lightness of biomass, biocomposite conductor is prepared by chimaeric conductive material. Here, we review the approaches that have been taken to devise an environmentally friendly yet fully recyclable and sustainable functionalised biocomposites from biomass and its potential directions for future research.

关键词： Biocomposite Renewable Sustainability Advanced functional material Pollution mitigation

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Microcavity exciton polaritons at room temperature

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Photonics Insights 2022年第1期1卷 60-103页

作者： Sanjib Ghosh Rui Su Jiaxin Zhao Antonio Fieramosca Jinqi Wu Tengfei Li Qing Zhang Feng Li Zhanghai Chen Timothy liew Daniele Sanvitto Qihua xiong Beijing Academy of Quantum Information Sciences BeijingChina Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingaporeSingapore School of Materials Science and Engineering Peking UniversityBeijingChina Research Center for Wide Gap Semiconductor Peking UniversityBeijingChina Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Laboratory of Information Photonic Technique School of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’anChina Department of Physics College of Physical Science and TechnologyXiamen UniversityXiamenChina CNR NANOTEC Campus EcotekneLecceItaly State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijingChina Frontier Science Center for Quantum Information BeijingChina Beijing Innovation Center for Future Chips Tsinghua UniversityBeijingChina

The quest for realizing novel fundamental physical effects and practical applications in ambient conditions has led to tremendous interest in microcavity exciton polaritons working in the strong coupling regime at room *** the past few decades,a wide range of novel semiconductor systems supporting robust exciton polaritons have emerged,which has led to the realization of various fascinating phenomena and practical *** paper aims to review recent theoretical and experimental developments of exciton polaritons operating at room temperature,and includes a comprehensive theoretical background,descriptions of intriguing phenomena observed in various physical systems,as well as accounts of optoelectronic ***,an in-depth review of physical systems achieving room temperature exciton polaritons will be presented,including the early development of ZnO and GaN microcavities and other emerging systems such as organics,halide perovskite semiconductors,carbon nanotubes,and transition metal ***,a perspective of outlooking future developments will be elaborated.

关键词： microcavity exciton polariton Bose-Einstein condensation exciton binding energy quantum simulation nonequilibrium dynamics

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