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A Gain-of-Function Mutation in IAA7/AXR2 Confers Late Flowering under Short-day Light in Arabidopsis

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Journal of Integrative Plant Biology 2011年第6期53卷 480-492页

作者： Yan-Xia Mai Long Wang hong-quan yang National Key Laboratory of Plant Molecular Genetics Institute o1 Plant Physiology and Ecology Shanghai Institutes tor ~iolog~calSciences the Chinese Academy of Sciences Shanghai 200032 China Plant Science Institute School of Agriculture and Biology Shanghai Jiaotong University Shanghai 200240 China

Floral initiation is a major step in the life cycle of plants, which is influenced by photoperiod, temperature, and phytohormones, such as gibberellins （GAs）. It is known that GAs promote floral initiation under short-day light conditions （SDs） by regulating the floral meristem-identity gene LEAFY （LFY） and the flowering-time gene SUPPRESSOR OF OVEREXPRESSION OF CO 1 （SOC1）. We have defined the role of the auxin signaling component INDOLE-3-ACETIC ACID 7 （IAA7）/AUXIN RESISTANT 2 （AXR2） in the regulation of flowering time in Arabidopsis thaliana. We demonstrate that the gain-of-function mutant of IAA7/AXR2, axr2-1, flowers late under SDs. The exogenous application of GAs rescued the late flowering phenotype of axr2-1 plants. The expression of the GA20 oxidase （GA2Oox） genes, GA2Ooxl and GA2Oox2, was reduced in axr2-1 plants, and the levels of both LFY and SOC1 transcripts were reduced in axr2-1 mutants under SDs. Furthermore, the overexpression of SOC1 or LFY in axr2-1 mutants rescued the late flowering phenotype under SDs. Our results suggest that IAA7/AXR2 might act to inhibit the timing of floral transition under SDs, at least in part, by negatively regulating the expressions of the GA2Ooxl and GA2Oox2 genes.

关键词： Arabidopsis GA 20-oxidases GAs IAA7/AXR2 auxin.

Design and modification of metal sulfide-based catalysts for lithiumsulfur batteries

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Particuology 2024年第3期86卷 86-100页

作者： Yufei Zhao Chuannan Geng Li Wang Haotian yang Wei Lv quan-hong yang Nanoyang Group State Key Laboratory of Chemical EngineeringSchool of Chemical Engineering and TechnologyNational Industry-Education Integration Platform of Energy Storageand Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin UniversityTianjin300072China Shenzhen Geim Graphene Center Engineering Laboratory for Functionalized Carbon MaterialsTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China Haihe Laboratory of Sustainable Chemical Transformations Tianjin300192China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou350207China

Metal sulfide(MS)have good conductivity,strong adsorption ability,and excellent catalytic activity for the conversion of sulfur species,and thus,show great promise as the catalysts in LieS ***,the relationship between their properties and electrochemical performance is still ***,further in-depth discussions are required to improve their design in Li-S *** review systematically summarizes the basic structural and electrochemical properties of MSs and highlights the advantages that guarantee them as high-performance catalysts in Li-S ***,various modification strategies for MSs to enhance the catalytic activity,efficiency,and stability are also *** last,future opportunities for MS catalysts in Li-S batteries are proposed.

关键词： Lithium-sulfur battery Metal sulfide Catalysis

Substitution of a Conserved Glycine in the PHR Domain of Arabidopsis CRYPTOCHROME 1 Confers a Constitutive Light Response

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Molecular Plant 2012年第1期5卷 85-97页

作者： Nan-Nan Gu Yan-Chun Zhang hong-quan yang National Key Laboratory of Plant Molecular Genetics Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200032China Plant Science Institute School of Agriculture and BiologyShanghai Jiaotong UniversityShanghai 200240China

CRYPTOCHROMES （CRYs） are photolyase-like ultraviolet-A/blue light photoreceptors that mediate various light responses in plants. The signaling mechanism of Arabidopsis CRYs （CRY1 and CRY2） involves direct CRY-COP1 interaction. Here, we report that CRY1G380R, which carries a Gly-to-Arg substitution of the highly conserved G380 in the photo-lyase-related （PHR） domain of Arabidopsis CRY1, shows constitutive CRY1 photoreceptor activity in Arabidopsis. Transgenic plants overexpressing CRY1G380R display a constitutively photomorphogenic （COP） phenotype in darkness, as well as a dramatic early flowering phenotype under short-day light conditions （SD）. We further demonstrate that CRY1G380R expression driven by the native CRY1 promoter also results in a COP phenotype in darkness. Moreover, over- expression of either the Arabidopsis homolog CRY2G377R or the rice ortholog OsCRYlbG388R of CRY1G380R in Arabidopsis results in a COP phenotype in darkness. Cellular localization studies indicate that CRY1G380R co-localizes with COP1 in the same nuclear bodies （NBs） in vivo and inhibits the nuclear accumulation of COP1 in darkness. These results suggest that the conserved G380 may play a critical role in regulating the photoreceptor activity of plant CRYs and that CRY1G380R might constitutively phenocopy the photo-activated CRY1 in darkness and thus constitutively mediate CRY1 signaling.

关键词： Arabidopsis CRY1 CRy1G380R COP phenotype COP1.

Interfacial high-concentration electrolyte for stable lithium metal anode:Theory,design,and demonstration

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Nano Research 2023年第6期16卷 8321-8328页

作者： Haotian Lu Chunpeng yang Feifei Wang Lu Wang Jinghong Zhou Wei Chen quan-hong yang Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207China Nanoyang Group State Key Laboratory of Chemical EngineeringSchool of Chemical Engineering and Technologyand Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Department of Chemistry National University of SingaporeSingapore 117543Singapore State-Key Laboratory of Chemical Engineering East China University of Science of TechnologyShanghai 200237China

Lithium metal anodes hold great potential for high-energy-density secondary ***,the uncontrollable lithium dendrite growth causes poor cycling efficiency and severe safety concerns,hindering lithium metal anode from practical *** components play important roles in suppressing lithium dendrite growth and improving the electrochemical performance of long-life lithium metal anode,and it is still challenging to effectively compromise the advantages of the conventional electrolyte(1 mol·L^(−1)salts)and high-concentration electrolyte(>3 mol·L^(−1)salts)for the optimizing electrochemical ***,we propose and design an interfacial high-concentration electrolyte induced by the nitrogen-and oxygen-doped carbon nanosheets(NO-CNS)for stable Li metal *** NO-CNS with abundant surface negative charges not only creates an interfacial high-concentration of lithium ions near the electrode surface to promote chargetransfer kinetics but also enables a high ionic conductivity in the bulk electrolyte to improve ionic *** from the interfacial high-concentration electrolyte,the NO-CNS@Ni foam host presents outstanding electrochemical cycling performances over 600 cycles at 1 mA·cm^(−2) and an improved cycling lifespan of 1,500 h for symmetric cells.

关键词： lithium metal anode dendrite growth interfacial high-concentration electrolyte surface negative charge

Inside-out dual-doping effects on tubular catalysts:Structural and chemical variation for advanced oxygen reduction performance

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Nano Research 2022年第1期15卷 361-367页

作者： yang Gao Debin Kong Jiaxu Liang Daliang Han Bin Wang quan-hong yang Linjie Zhi CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China University of Chinese Academy of Sciences Beijing 100049China

Dual-doping of carbon,especially the combination of nitrogen and a secondary heteroatom,has been demonstrated efficient to optimize the oxygen reduction reaction(ORR)***,the optimum dual-doping is still not clear due to the lack of strong experimental proofs,which rely on a reliable method to prepare carbon materials that can rule out the interference factors and then emphasize only the doping *** this work,an inside-out doping method is reported to prepare carbon submicrotubes(CSTs)as a material to study the principles of designing dual-doping catalysts for *** interference factors including the metal impurities and doping gradient in the bulk phase are excluded,and the doping effects including the structural and chemical variation of carbon are studied.P-doping exhibited a higher pore-forming ability to perforate carbon and a lower doping content,but a higher ORR catalytic activity as compared with S-and B-doped N-CSTs,demonstrating the N,P co-doping is more efficient in making carbon-based catalysts for ***-principle calculations reveal that the edge C situated around the oxidized P site nearby a graphitic N atom is the active site that shows the lowest ORR overpotential comparable to Pt-based *** study suggests that the catalytic activity of dual-heteroatoms-doped carbons not only depends on the intrinsic chemical bonding between heteroatoms and carbon,but also is affected by the structural variation generated by introducing different atoms,which can be extended to the study of other kinds of functionalization of carbon and potential reactions besides ORR.

关键词： dual-doping phosphorus carbon tubes oxygen reduction metal-free catalysts

Activated carbon fibers with manganese dioxide coating for flexible fiber supercapacitors with high capacitive performance

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Journal of Energy Chemistry 2019年第4期28卷 95-100页

作者： Huifang Li Jiachen Liang Huan Li Xiaoyu Zheng Ying Tao Zheng-hong Huang quan-hong yang Nanoyang Group School of Chemical Engineering and Technology Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Institute of Forensic Science Ministry of Public Security Laboratory of Advanced Materials School of Materials Science and Engineering Tsinghua University

Fiber supercapacitor(FSC)is a promising power source for wearable/stretchable electronics and high capacitive performance of FSCs is highly desirable for practice flexible ***,we report a composite of manganese dioxide(Mn O_2)and activated carbon fibers(ACFs)with high MnO_2mass loading and microporous structure(abbreviated as Mn O_2@ACF),which is used as a fiber electrode to produce a FSC with a high capacitive performance and a good *** MnO_2@ACF composite electrode in FSCs delivers an ultrahigh specific capacitance of 410 mF/cm^2at 0.1 mA/cm^2,corresponding to a high energy density of 36μWh/cm^2and high power density of 726μW/cm^*** high capacitive performance and simple fabrication method indicates that the Mn O_2@ACF composite is a very promising electrode material for flexible fiber supercapacitors.

关键词： Fiber supercapacitors Activated carbon fibers Mass loading Flexibility

The involvement of the N-terminal PHR domain of Arabidopsis cryptochromes in mediating light signaling

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aBIOTECH 2021年第2期2卷 146-155页

作者： Wenxiu Wang Zhilei Mao Tongtong Guo Shuang Kou hong-quan yang Shanghai Key Laboratory of Plant Molecular Sciences College of Life SciencesShanghai Normal UniversityShanghai 200234China

Light is a key environmental cue that fundamentally regulates all aspects of plant growth and development,which is mediated by the multiple photoreceptors including the blue light photoreceptors cryptochromes(CRYs).In Arabidopsis,there are two well-characterized homologous CRYs,CRY1 and *** CRYs are flavoproteins,they lack photolyase activity and are characterized by an Nterminal photolyase-homologous region(PHR)domain and a C-terminal extension *** has been established that the C-terminal extension domain of CRYs is involved in mediating light signaling through direct interactions with the master negative regulator of photomorphogenesis,*** studies have revealed that the N-terminal PHR domain of CRYs is also involved in mediating light *** this review,we mainly summarize and discuss the recent advances in CRYs signaling mediated by the N-terminal PHR domain,which involves the N-terminal PHR domain-mediated dimerization/oligomerization of CRYs and physical interactions with the pivotal transcription regulators in light and phytohormone signaling.

关键词： Light signaling Cryptochromes Photomorphogenesis Phytohormone signaling

Understanding the effects of electrode meso-macropore structure and solvent polarity on electric double layer capacitors based on a continuum model

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Chinese Journal of Chemical Engineering 2022年第10期50卷 423-434页

作者： Haotian Lu Jinghong Zhou Yueqiang Cao Tongxin Shang Guanghua Ye quan-hong yang Xinggui Zhou State-Key Laboratory of Chemical Engineering East China University of Science of TechnologyShanghai 200237China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China Nanoyang Group State Key Laboratory of Chemical EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China

The structures of electrode meso-macropore and the solvent polarity are the crucial factors dominating the performance of the electric double layer capacitors(EDLCs),but their impacts are usually tangled and difficult to decouple and *** the effects of electrode meso-macropore structure and solvent polarity on the specific capacitance of an EDLC are quantitatively investigated using a steady-state continuum *** simulation results indicate the specific capacitances are significantly affected by the meso-macropore surface *** specific capacitances significantly decrease for both convex surface structures but obviously increase for both concave surface structures,with the increase of curvature radius from 1 to 20 *** for solvents,the polar solvent with high saturated dielectric permittivity improves the capacitance ***,the electrode meso-macropore structure is of more concern compared with solvent polarity when aiming at enhancing the specific *** results provide fundamentals for the rational design of porous electrodes and polar electrolytes for EDLCs.

关键词： Electric doublelayercapacitors Numerical simulation Meso-macropore Electrolytes Saturated dielectricpermittivity

Improved performance of Li-Se battery based on a novel dual functional CNTs@graphene/CNTs cathode construction

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Rare Metals 2017年第5期36卷 425-433页

作者： Jing Li Chen Zhang Cheng-Jun Wu Ying Tao Lei Zhang quan-hong yang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China School of Marine Science and Technology Tianjin UniversityTianjin 300072China

A dual functional CNTs@graphene/CNTs cathode for Li–Se battery was constructed by a CNTs@graphene network and a CNTs interlayer. CNTs were first integrated with graphene to form a three-dimensional（3D） framework and work together as a conductive matrix for Se confinement. The optimized composite cathode delivers a high initial capacity of 575 mAh·g^-1 at 0.5 A·g^-1 and good rate capacity with a retained capacity of 479 mAh·g^-1 at 2.0 A·g^-1（73% of the capacity at 0.2 A·g^-1）. CNTs were further served as an interlayer to confine the diffusion of polyselenides by constructing a thin CNTs layer outside the CNTs@graphene network. An improved initial capacity of 616 mAh·g^-1 at 0.5 A·g^-1 is achieved with a retained capacity of 538 mAh·g^-1 after 80 cycles, indicating the effective dual function of CNTs in this novel cathode construction and great application potential for Li–Se battery.

关键词： Graphene Carbon nanotube Cathode material Li–Se battery