Cell Reports
·
2023
·
IF 8.8
Yu Xie,Wenbo Liu,Wenjing Liang,Xiaobin Ling,Jinbiao Ma,Chuanwei Yang,Lin Li
Shade-intolerant plants sense changes in the light environment and trigger shade-avoidance syndrome in the presence of neighboring vegetation. Phytochrome-interacting factor 7 (PIF7) is an essential regulator that integrates shade signals into plant transcriptional networks. While the regulation of PIF7 under shade conditions has been well studied, the mechanism that represses PIF7 activity under white light remains ambiguous. Here, we report that PIF7 forms nuclear puncta containing phase-separated liquid-like condensates. Phytochrome B (phyB) then binds to dephosphorylated PIF7 and promotes its condensed phase of PIF7 under white light. The phyB-PIF7 condensate subsequently inhibits the DNA-binding activity of PIF7. However, shade inactivation of phyB causes the dissociation of phyB-PIF7 condensates and allows unbound PIF7 to promote the transcription of shade-induced genes. This reversible transcriptional condensation via phase separation provides sessile organisms with the flexibility of gene control to adapt to their surrounding environment.
研究领域:
植物生物学
·
分子遗传学
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Yina Jia,Jianrong Tang,Yunfu Dang,Yizhou Yang,Shan He,Yue Jiang,Yong Wang,Juntao Feng,Zhiqing Ma,Xili Liu,He Yan
Lansiumamide B (LB) is a cinnamamide alkaloid isolated from Clausena lansium seeds. The compound is the main antifungal ingredient found in C. lansium . In this paper, the antifungal activity of LB against 10 plant pathogenic fungi was evaluated and found that it was the most effective to Rhizoctonia solani (EC 50 = 2.99 μg/mL). The compound also exhibits certain protective (53.06%) and curative (71.01%) activities against R. solani at 800 μg/mL. The mechanism of action of LB was further elucidated through physiological and biochemical experiments, mycelial morphology and ultrastructure observations, and transcriptomics studies with R. solani as the experimental strain. SEM and TEM observation showed that it caused abnormal mycelium growth, extravasation of contents and cell wall degradation. Physiological and biochemical tests showed that LB treatment had no significant effect on the cellular respiration of mycelium , but it could increase the membrane permeability , cause the leakage of intracellular electrolyte, reduce the content of extracellular polysaccharide and chitin in cell wall and increased the contents of intracellular reducing sugar. The results of transcriptome sequencing analysis showed that LB had significant effects on polysaccharide and oligosaccharide related metabolic pathways, such as starch and sucrose metabolic pathways, galactose metabolic pathways, and amino sugar metabolic pathways. Furthermore, LB treatment increased the specific enzyme activity of α-1, 4-glucanase, α-1,6-glucanase, cellulase and maltase of R. solani in vivo . Comprehensive analysis of the above experimental results shows that LB induces and regulates the degradation of polysaccharides and oligosaccharides of R. solani at the transcriptional level, thereby destroying the cell wall structure and ultimately leading to the death of fungi.
研究领域:
植物化学
·
真菌学
·
分子生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2024
·Vol. 39
·期 4
·869-876
·
IF 1.3
Zhang Yanwei,Wang Yanze,Li Junguo,Xie Jingjing,Wang Wenxuan,Fu Zhengyi
We synthesized BiVO 4 mesocrystals with ordered assembly structure, and studied the structural order and the relationship between the photodegradation of Rhodamine B. Au nanoparticles (NPs) were successfully loaded onto Meso-BiVO 4 by light-assisted induction, and Cd nanoparticles were further selected to be deposited on Au nanoparticles to form Z-scheme photocatalyst Meso-BiVO 4 -Au-CdS heterostructures. We try and propose to analyze its ordered assembly structure by XRD for the first time. The results show that Meso-BiVO 4 is a mesocrystal with highly exposed (001) plane and directional assembly structure. The charge separation efficiency of all samples was studied by PL spectroscopy. The results show that the Z-scheme Meso-BiVO 4 -Au-CdS can promote the charge separation and obtain the best carrier separation efficiency. Thus, it has the best photocatalytic activity in the experiment of photocatalytic degradation of rhodamine B. The main active species in the degradation process were confirmed by free radical trapping experiment, and the degradation mechanism was put forward.
研究领域:
材料科学
·
环境科学
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2019
·Vol. 13
·期 1
·29
·
IF 2.972
Jianmeng Jiao,Jafar Safarian,Bettina Grorud,Merete Tangstad
Si-B alloys are proposed as a potential phase change material (PCM) in the novel high temperature thermal energy storage systems. For successfully introducing the new PCM, the selection of proper refractory material in the PCM container is vital. At present, graphite is chosen as a potential refractory material for the PCM container, due to its high temperature stability, low thermal expansion, and high thermal conductivity. The Si-B alloys and the high-temperature interaction with graphite are hence studied. The phase formation in the Si-B alloys and the interaction with graphite at B content of 2–11 mass % and temperatures of 1450–1750 °C were investigated. Carbides were observed at the interface between the solidified alloys and the graphite. A single SiC layer was produced at B content of 2 and 3.25 mass %. Otherwise, SiC and B4C layers were generated at B content higher than 5 mass %. In the Si-B-C system, the phase formation is dependent on the B content. Moreover, the equilibrium B content is calculated to be 3.66 mass % in the molten Si-B alloys at 1450 °C in equilibrium with SiC and B4C, based on the experimental results. In this regard, the eutectic alloy (3.25 mass % B) is recommended to be used as the new PCM in the graphite container, due to that it produces simple phases and also because it is expected not to deplete any B to the B4C layer.Keywords:Si-B alloys;graphite;PCM;carbon solubility;carbides
研究领域:
材料科学
·
热能工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2013
·
IF 3.473
Fei Ji,Chaolin Li,Xiyu Wei,Jie Yu
Porous Fe 2 O 3 particle was synthesized by the hydrothermal-calcination method and then used to activate peroxymonosulfate (PMS) for Rhodamine B (RhB) decolorization. Several analytical means such as X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and N 2 physisorption were used to determine the characteristics of the catalyst particles. The results of experiments indicated that the catalyst showed a high activity in decolorization of RhB in the presence of PMS. Several key parameters including initial pH, amounts of catalyst, PMS concentration, and temperature were investigated in order to understand their effect on the decolorization efficiency. Furthermore, the catalyst showed good reusability and stability after three recycles. Finally, the free radicals participating in the process were classified by radical quenching studies, and a rational mechanism was proposed based on the results obtained to understand the catalytic process.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 18
·7571-7582
·
IF 4.5
Yang Yang,Lu Jie,Ma Zhichun,Zhao Yi,Wang Shuang,Ge Kai,Yang Yongfang
Two dimensional (2D) CuTCPP/B–TiO 2 composites were successfully synthesized by addition of B–TiO 2 NPs into the system for preparation of 2D CuTCPP nanosheets under hydrothermal condition. 2D CuTCPP nanosheets with large specific surface area can not only act as supportor to decrease the aggregation of B–TiO 2 and improve the adsorption capacity of methylene blue (MB) but also provide more transfer pathway to effectively facilitate interfacial charge transfer and separation of photogenerated electrons and holes, thus leading to a superior efficiency for photodegradation of MB. The photocatalytic degradation rate constant of 2D CuTCPP/B–TiO 2 composites is 0.0486 min −1 , which is about 15.2, 5.92 and 4.23 times that of P25 (k = 0.0032 min −1 ), 2D CuTCPP nanosheets ((k = 0.0082 min −1 ) and B–TiO 2 NPs (k = 0.0115 min −1 ). This study demonstrates that the combination of B–TiO 2 NPs and 2D CuTCPP is a viable strategy to improve the photocatalytic efficiency for degradation of MB.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Dewei Liu,Qijie Zhang,Saipeng Ding,Fufeng Yan,Haiyang Dai,Tao Li,Renzhong Xue,Jing Chen,Gaoshang Gong,Cui Shang,Xuezhen Zhai
A series of nano-V 1- x Mn x O 2 samples ( x = 0–0.035) were prepared by a simple solvothermal method. XRD patterns and the Rietveld refinement results of V 1- x Mn x O 2 samples showed that Mn ions were incorporated into the V sites during the solvothermal process. XPS results indicated that the valence state of Mn ion was a mixed state of Mn 2+ , Mn 3+ and Mn 4+ . The corresponding relationship between the diameter, specific surface area and electrochemical performances of V 1- x Mn x O 2 nanorods was studied. It can be found that Mn doping promoted the insertion of K + ions into the electrode material and improved the conductivity, discharge capacity and cycle stability, which was due to more defects induced by Mn doping. The x = 0.020 sample had the largest specific capacitance (the 88% capacity retention rate after 550 cycles at 0.1 A·g −1 ) due to the improvement of structural stability by Mn-ion doping. These results provide great potential applications for nano-VO 2 (B) in the cathode material of lithium-ion battery and supercapacitor .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 9
·2117
·
IF 3.2
Jiaxiong Li,Muqing Hou,Haiyuan Chen,Huan Yu,Jixue Zhou,Jianhua Wu,Xitao Wang
Al/diamond composites are considered a new generation of potential thermal management materials. In this study, the uniform B coating on the surface of diamond particles was prepared by the vacuum thermal diffusion method. Subsequently, Al matrix composites reinforced with B-coated diamond particles were produced by the gas pressure infiltration method. The plating time was varied from 0 to 120 min to investigate the effect of B coating on the thermal conductivity and thermal expansion of the Al/B-diamond composites. The thermal conductivity for the Al/B-diamond composites increased from 422 W/m·K to 562 W/m·K with prolonged plating time from 0 to 90 min. Correspondingly, the coefficient of thermal expansion was tailored from 7.0 × 10−6/K to 5.8 × 10−6/K. The enhanced thermal conductivity and decreased coefficient of thermal expansion were attributed to strong interfacial bonding in Al/B-diamond composites. The results indicate that the appropriate thickness of B coating is a viable method to improve interfacial bonding between the Al matrix and B-coated diamond particles.
研究领域:
材料科学
·
热管理技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 20
·16177-16182
·
IF 3.289
Jingjie Su,Zhaodong Li,Yongquan Zhang,Yingjin Wei,Xudong Wang
TiO2-B is a metastable phase of titania with an interesting crystal structure and electrochemical properties. N-Doped and Cu-doped TiO2-B nanowires (NWs) were synthesized by hydrothermal and microwave-assisted hydrothermal methods, respectively. All the NWs are single crystal with the same crystal orientation regardless of the synthesis method and doping situation. The doped NWs together with their corresponding pristine NWs were fabricated into a photoelectrochemical (PEC) anode for water oxidation and their photoactivity performances were studied and compared under different illumination wavelength ranges. The Cu-doped TiO2-B NWs exhibited a significantly higher photocurrent density than all the other samples under direct Xe lamp illumination; while their performance rapidly dropped below the hydrothermal NWs when the UV illumination was cut off. On the contrary, N-doped TiO2-B NWs exhibited significantly enhanced photoactivity particularly in the visible light range. X-ray photoelectron spectroscopy revealed that N-doping could narrow the electronic bandgap of TiO2, while the Cu-doping had little impact on the bandgap but rather improved the electrical conductivity. This research provides a new insight into elemental and phase control of TiO2-based solar energy harvesters.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 10
·105916
·
IF 1.449
Nuoya Wang,Xinhua Huang,Vincent Chan,Lei Zhang
Conducting polymer has emerged as an attractive class of photocatalyst for wastewater treatment under visible light and UV light irradiation. In our current work, two types of polypyrene microparticles (PPMSs) were tailored designed as a novel catalytic material for photocatalytic degradation of Rhodamine B (RhB) in aqueous solution. The degradation rate of RhB correlated with the effectiveness of respective photocatalytic processes was determined from the UV absorbance spectrum. Firstly, highly monodispersed PPMSs with an average diameter of around 1 μm were successfully synthesized from the emulsion co-polymerization of pyrene and chloromethyl methyl ether. Secondly, PPMSs remained to be chemically stable under various pH values in the solution. Moreover, the degradation rate of the types of PPMSs at different pHs values ranged from 63.2% to 98.43%. Interestingly, the degradation efficiency of PPMSs under acidic conditions (pH < 6) decreased with the increase of pH while it increased with the increase of pH under alkaline conditions (pH > 9). The degradation efficiency reached a peak under pH 7.0. Overall, PMMSs which possessed high chemical resistance against strong acid or base and high photocatalytic activities for the degradation of model organic pollutants under various pHs would provide a new alternative for wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2019
·
IF 4.978
Tunmise Ayode Otitoju,Dafu Jiang,Yuanyuan Ouyang,Mohammed Ahmedelbadawi Mohammed Elamin,Sanxi Li
In this study, CaCu 3 Ti 4 O 12 (CCTO) modified polyethersulfone (PES) HF membranes were prepared via dry-wet phase inversion by adding different concentration of CCTO particles (0–4 wt.%) in the dope solution. The synthesized PES/CCTO composites were characterized by viscosity measurement , scanning electron microscope, X-ray diffraction, contact angle, pore size, and pore size distribution. The flux and the photocatalytic activity of CCTO entrapped PES membranes were subsequently evaluated by crossflow ultrafiltration and the photodegradation of Rhodamine B (RhB) under UV irradiation, respectively. The pure water permeability of the composite membranes improved considerably upon the addition of CCTO owing to its slightly improved hydrophilicity and moderate pore size. The results also show that the PES/CCTO composite exhibited a higher photocatalytic activity, which was mainly attributed due to the crystallite size of CCTO particles.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Environmental Chemistry Letters
·
2019
·Vol. 17
·期 4
·1831-1837
·
IF 4.617
Wang Shengli,Yan Linlin,Guan Xiaohui,Jia Yanping,Song Lianfa,Zhang Haifeng
Hydroxyl radicals are commonly produced either by metal activation or by using external energy. However, the application of these methods is limited by low working pH and secondary contamination with metal ions. Alternatively, the reaction between hydrogen peroxide (H 2 O 2 ) and hydroxylamine is an environmentally friendly process that generates active radicals, but the reaction rate is slow. To improve this, we report here a novel and efficient activator for the H 2 O 2 /hydroxylamine system that uses sulfate ions ( \({\text{SO}}_{4}^{2 - }\) ). We tested the effects of different systems, concentrations of H 2 O 2 , hydroxylamine and \({\text{SO}}_{4}^{2 - }\) , and pH on the degradation of Rhodamine B. The mechanism was also investigated by kinetic calculation, a radical scavenging experiment, and anions comparison. Results show that the addition of \({\text{SO}}_{4}^{2 - }\) effectively improved Rhodamine B degradation and widened the working pH. The hydroxyl radical was found to be the primary radical responsible for dye degradation. Moreover, only \({\text{SO}}_{4}^{2 - }\) shows an enhanced effect under the same ionic strength conditions. Overall, our findings reveal a new method for water purification at acidic and near-neutral pH, especially for sulfate-rich wastewater treatment.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）