Stress Biology
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2026
·Vol. 6
·期 1
·35
·
IF 6.4
Xie Yan,Zhao Min,Liu Xianan,Yan Junjie,Yang Wanyi,Chen Yiya,Yang Ming,Wang Xiaowei,Fu Shuai,Zhou Xueping
Cysteine palmitoylation (S-palmitoylation or S-acylation) is a reversible post-translational modification dynamically controlled by opposing enzymes: palmitoyl acyltransferases (PATs) and depalmitoylases. Despite its established roles in other systems, the mechanistic details of S-acylation in plants, particularly its spatiotemporal regulation during plant-virus interactions, remain poorly understood, largely due to the lack of validated enzyme–substrate pairs. Using the geminivirus tomato yellow leaf curl Chuxiong virus (TYLCCxV) as a model, we show that the viral effector C4 undergoes S-palmitoylation at Cys-4, a modification essential for its plasma membrane anchorage and subsequent mediation of viral pathogenesis. NbPAT4, a palmitoyl acyltransferase from Nicotiana benthamiana , catalyzes C4 S-palmitoylation, promoting its membrane localization, protein stability, and viral infection. Conversely, the C4S substitution (C4 C4S ) abolishes S-palmitoylation, leading to cytoplasmic redistribution, protein destabilization, and impaired viral pathogenicity. We further identify NbABHD6 as a depalmitoylase that interacts with C4 and catalyzes its S-depalmitoylation, triggering C4 degradation via the 26S proteasome pathway. This study reveals a regulatory axis in plant-geminivirus interactions, identifying NbPAT4 and NbABHD6 as antagonistic enzymes that dynamically regulate the stoichiometry of C4 S-acylation. These findings support a host–pathogen enzymatic tug-of-war model in which competitive S-palmitoylation homeostasis governs viral subcellular trafficking and pathogenicity.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Yuce Zhang,Chuanmin Ding,Yan Lv,Yanwen Guo,Mengtao Liu,Zekai Ren,Junwen Wang
Thermocatalytic water splitting to produce hydrogen at low temperature was of great significance. In this study, a series of efficient and stable FeO x and FeO x S x catalysts were synthesized via a liquid precipitation method using ferrous sulfate, sodium hydroxide, and thiourea as precursors. The study focused on investigating the effects of sulfur introduction and preparation atmosphere on the catalytic performance. These catalysts were characterized by SEM, XRD, FT-IR, XPS and H 2 -TPR, which confirmed the successful preparation of sulfur-doped catalysts (denoted as FeO x S x -Air and FeO x S x -O 2 ). Under reaction conditions of 350 °C and water vapor (space velocity: 0.3 mL min −1 ), the sulfur-doped catalysts demonstrated superior activity, with FeO x S x -Air and FeO x S x -O 2 achieving H 2 production rates of approximately 0.0523 mmol (mL g) −1 and 0.04092 mmol (mL g) −1 , respectively, outperforming their undoped counterparts (FeO x -Air and FeO x -O 2 ). Meanwhile, FeO x S x -Air with the higher activity was more beneficial for the reaction than FeO x S x -O 2 , which indicated that a lower oxygen partial pressure facilitated the formation of unsaturated Fe coordination environments. The performance enhancement was attributed to the synergistic effect of sulfur doping and low oxygen partial pressure, which optimized the Fe 2+ /Fe 3+ ratio and accelerated the Fe + /Fe 3+ redox cycle, thereby improving charge transfer efficiency and optimizing hydrogen production. These findings highlighted the critical role of sulfur incorporation under low-oxygen conditions in boosting the catalytic activity of iron oxide-based for low-temperature water splitting.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Ziyi An,Suchang Zou,Yi Cai,Bo Xiong,Weilong Shi,Yuzhen Zhao
Citric acid modification reduces red mud alkalinity, enabling effective S-scheme heterojunction with ZnIn₂S₄; • The 4 wt%-ARM/ZIS achieves 2.59 mmol g −1 h −1 H₂ production, 3.28 times higher than pristine ZnIn₂S₄; • Innovative strategy for red mud valorization in sustainable photocatalytic hydrogen production. Hydrogen energy has emerged as a major research focus owing to high combustion heat value, zero carbon emissions, and diverse utilization forms, while photocatalytic hydrogen production, in particular, has attracted considerable interest by virtue of cost-effectiveness and environmental compatibility. Red mud (RM), a large-volume waste from bauxite refining, features a complex composition with harmful and strongly alkaline species that make its disposal costly and environmentally hazardous, thereby demanding urgent and effective treatment solutions. Herein, RM was modified with citric acid to reduce the strong alkalinity of RM, thereby obtaining acid-treated RM (ARM), which is beneficial to be used as reduction photocatalyst and combine with the typical oxidation photocatalyst (ZnIn 2 S 4 , ZIS) to construct the S-scheme heterojunction. The results reveal that the optimal 4 wt%-ARM/ZIS composite achieved the highest photocatalytic hydrogen production rate of 2.59 mmol g −1 h −1 under full-spectrum light irradiation, 3.28 times higher than pure ZIS, demonstrating significant improvement in photocatalytic performance. This work provides innovative approaches and practical solutions for the utilization of RM resources, while also promoting their application in photocatalytic hydrogen production.
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ADVANCED MATERIALS
·
2026
·
IF 29.1
Fang Li,Peng Zhou,Jinfeng Zhang,Minshu Chen,Quanjun Xiang
Directly switching the type of electron transfer from Type-II to S-scheme at the heterojunction interfaces of a two-component photocatalyst is crucial for improving charge separation efficiency in semiconductor-based photocatalysis technology. A major challenge lies in the effective control of the interfacial band-edge position or electronic properties of a two-component photocatalyst. Here, we constructed a “directional valve” in a Zn x Cd 2-x S 2 –crystalline carbon nitride (Zn x Cd 2-x S 2 –CN) heterojunction through Fermi level modulation to selectively switch Type-II to S-scheme charge transfer. Experimental validation using advanced scanning probe microscopy and in situ photoemission directly observed the switched electron transfer dynamics. The metal probe-assisted in situ X-ray photoelectron spectroscopy (XPS) directly demonstrates the electron transition from Type-II to S-scheme pathways at the interface, corroborated by illumination-induced surface potential shifts. Furthermore, the S-scheme charge transfer in Zn x Cd 2-x S 2 –CN heterojunction contributed to a four times higher CO 2 photoreduction activity than the Type-II one. This study provides a new paradigm for rationally controlling interfacial charge dynamics through band engineering.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Sain Bux Jamali,Tauqeer Haidar Qamar,Sibt ul Hassan,Nouman Ahmed,Ijaz Ahmad,Pengkun Xia,Shakeel Ahmad,Shengxiang Huang,Lianwen Deng
The escalating demand for effective electromagnetic interference shielding, particularly in the challenging low-frequency microwave range such as S-band, underscores the need for advanced high-performance electromagnetic absorbing materials. Herein, three-dimensional (3D) nickel/nitrogen-doped porous carbon foam decorated with carbon spheres (3D Ni/NPCF@CS) was synthesized for S-band microwave absorption. This unique design capitalizes on the synergistic interplay between the highly conductive and porous 3D carbon skeleton, the magnetic properties of encapsulated Ni nanoparticles, and the enhanced interfacial polarization provided by the conductive polypyrrole coating. This engineered hierarchical architecture created abundant heterogeneous interfaces and microwave loss pathways. Detailed electromagnetic analysis revealed that the optimized Ni/NPCF@CS composite material exhibited exceptional reflection loss (RL) performance of −57.8 dB at 3.44 GHz. The dominant absorption mechanisms, including dielectric loss from dipole polarization, conductive loss, and magnetic loss from Ni nanoparticles, were thoroughly investigated and discussed. This study provides valuable insights into the development of 3D-foam-based microwave-absorbing materials, particularly for their practical implementation in the S-band.
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JOURNAL OF PLANT GROWTH REGULATION
·
2025
·
IF 4.4
Zheng Donghui,Ren Fangfang,Yin Rongjun,Li Linmei,Cui Hanwen,Shen Hui,Chen Xiaochun,Gao Nan
Volatile organic compounds derived from plant growth-promoting rhizobacteria play critical roles in enhancing plant growth and stress tolerance. This study evaluated the effects of S-methyl thioacetate (SMT) on tomato seedlings under hydroponic and soil conditions, complemented by transcriptomic analysis using RNA-Seq. Under 3 g NaCl·kg −1 soil conditions, 100 mg·L −1 SMT alleviated salt stress, enhancing shoot dry weight by 37.29% and root dry weight by 58.97%. In hydroponic experiments, 50 mg·L −1 SMT was optimal, increasing root and shoot dry weights by 79.18% and 62.64%, respectively, compared to the controls. This treatment also significantly increased chlorophyll content, root length, and root surface area by 22.64%, 34.65%, and 84.69%, respectively. RNA-Seq analyses of seedlings treated with 100 mg·L −1 SMT in hydroponic experiments identified 7,748 differentially expressed genes (DEGs). Gene ontology functional enrichment analysis revealed that DEGs were predominantly involved in biological processes related to fungi and immune response, molecular functions associated with ATP binding, protein serine/threonine kinase activity, protein kinase activity, cellular components linked to the plasma membrane, and integral membrane components. KEGG pathway enrichment analysis showed that SMT induced a genotype-dependent response pattern, with upregulated DEGs involved in glutathione metabolism, lignin biosynthesis, and plant-pathogen interaction pathways. Key upregulated genes included those encoding peroxidase, WRKY22/29, and HSP90. This study provides a mechanistic framework for SMT’s dual role in enhancing growth and stress resilience in tomato seedlings. Future field trials are essential to validate its agricultural applicability.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Yi Zhou,Anze Shui,Mei Cai,Hulei Yu
Photocatalytic hydrogen evolution from water has emerged as a pivotal approach for the generation of sustainable energy. In this study, the Zn 0.5 Cd 0.5 S/TiO 2 ( x ZCST, where x denotes the molar ratio of ZCS to TiO 2 ) nanofibers S-scheme heterojunction is successfully synthesized via the hydrothermal deposition of Zn 0.5 Cd 0.5 S (ZCS) nanoparticles onto the surface of TiO 2 nanofibers. In comparison to pure TiO 2 and ZCS, the as-prepared x ZCST photocatalyst exhibits a significantly enhanced photocatalytic hydrogen evolution performance. Under simulated sunlight irradiation, a maximum hydrogen evolution rate of 16.68 mmol g −1 h −1 is achieved in the 3ZCST sample, which corresponds to 1.78 times that of ZCS and 57.52 times that of TiO 2 , respectively. Further investigations have substantiated the formation of the internal electric field and charge transfer process within the S-scheme heterojunction, demonstrating the difference between the Fermi levels of TiO 2 and ZCS, as well as the migration of electrons from TiO 2 to ZCS under illumination. Such an S-scheme heterojunction is also found to effectively facilitate the separation of photogenerated electron-hole pairs and preserve strong redox capabilities, significantly enhancing photocatalytic hydrogen production. These findings offer valuable insights and guidance for designing high-performance S-scheme heterojunction photocatalysts.
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ACS Applied Polymer Materials
·
2021
·
IF 4.089
Chunying Min,Yuzi Yang,Hongyu Liang,Zengbao He,Qiuying Li,Jinfeng Zhu,Kan Zhang,Haiting Shi,Wei Wang
The isomeric poly(hexahydrotriazine)s (PHTs) were prepared, based on their hemiaminal dynamic covalent networks via a facile method at 50 °C, through 1,3-bis(4-aminophenoxy)-benzene (TPE-R) and 1,4-bis(4-aminophenoxy)-benzene (TPE-Q) with formaldehyde. The influence of chain isomerism on thermal stability, mechanical properties, tribological properties, and the degradation rate of PHTs was investigated. The advantage of (TPE-Q)-PHTs compared with that of (TPE-R)-PHTs is that they possessed a higher glass transition temperature (Tg) of 187 °C, a higher Yang’s modulus of 10.7 GPa, and rapid degradation rate. Additionally, the (TPE-Q)-PHTs exhibited outstanding self-lubricating performance as compared to (TPE-Q)-PHTs because the para-connecting isomers showed lower surface energy, lower surface roughness, and higher hardness that effectively weakened the bonding force between friction pairs. Overall, the study of PHTs facilitates their practical application of energy conservation and environmental protection in the tribological industry.
研究领域:
材料科学
·
环境科学
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APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Tiancheng Na,Yang Liu,Xiangcun Li,Wenji Zheng,Yan Dai,Zhijun Yan,Wei Kou,Gaohong He
We report a method based on 2,4-dihydroxybenzoic acid-formaldehyde (RF-COOH) microsphere hard templates to prepare core-shelled Fe 2 O 3 microspheres , which were then added to graphene oxide to obtain hierarchical reduced graphene oxide, ultimately dropping Fe 2 O 3 (Fe 2 O 3 @rGO) by Vitamin C reduction and freeze drying. When used as cathode materials for lithium-sulfur batteries, Fe 2 O 3 @rGO shows a high specific capacity of 400.5 mAh g −1 at 2 C after 500 cycles. The prominent performance is due to the collaborative assembly of rGO , which provides stable structural support and favourable conductivity, and core-shelled Fe 2 O 3 microspheres, which are certified to have a strong interaction with polysulfides. The loose and stable skeletons of highly electroconductive rGO can offer a conductive framework for rapid ion/electron transport. Meanwhile, the unique core-shelled structure of Fe 2 O 3 with the ample void space can anchor polysulfides through the strong chemical adsorption and buffer the mechanical stresses caused by volume expansion during the charge and discharge processes. Moreover, Fe 2 O 3 promotes the transformation of polysulfides to insoluble LiPSs during the discharging process, effectively alleviating the shuttling of the polysulfides.
研究领域:
材料科学
·
能源存储
·
电化学
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DESIGNED MONOMERS AND POLYMERS
·
2017
·
IF 1.139
Yuxuan Zhang,Shuang Wang,Zhonghui Wang,Saisai Gai,Xi-Ming Song
A series of novel poly(arylene ether)s with crosslinked groups and different azobenzene chromophores contents (azo-CPAEs: PAE-allyl20%-azo20%, PAE-allyl20%-azo40%, PAE-allyl20%-azo60%) were synthesized from a new bisfluoro monomer, (2,6-difluorophenyl)-(4-hydroxyphenyl)methanone. Their chemical structures were characterized by means of UV-vis and FI-IR. The thermal properties of the polymers were investigated by TGA and DSC, indicating the polymers had high glass transition temperatures (Tg > 147 °C) and good thermal stability (Td5 > 360 °C) even when the contents of azobenzene chromophores was high to 60%. And the influence of thermal crosslinking on the performance of PAE-allyl20%-azo20%, a typical one of the series, was investigated. Tg of PAE-allyl20%-azo20% increased with the increase of heating time when heat-treated at 250 °C for 20, 40 and 60 min, indicating the crosslink degree of the polymer increased. After heat-treated for 60 min, Tg of PAE-allyl20%-azo20% increased to 175 °C from 147 °C before thermal crosslinking. Upon irradiation with a 532 nm neodymium doped yttrium aluminum garnet (Nd:YAG) laser beam, the remnant value of the polymer PAE-allyl20%-azo20% before and after the thermal crosslinking were 81 and 96%, respectively, meaning that the PAE-allyl20%-azo20% after thermal crosslink showed more stable photoinduced alignment than that before thermal crosslinking.
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CARBOHYDRATE RESEARCH
·
2018
·
IF 2.074
Chunlai Feng,Jin Wang,Qiujie Tang,Zijian Zhong,Shusen Qiao,Xingyu Liu,Can Chen,Aihua Zhou
Glycosyl phenylthiosulfonates are reagents which are valuable for the S-glycosylation decoration of organic compounds and proteins. Here, one-pot multiple-component synthesis of glycosyl phenylthiosulfonates from sulfinate , sulfur powder and glycosyl bromides is reported. The reactions afford glycosyl phenylthiosulfonates in good yields under mild conditions. Further application and exploration of glycosyl phenylthiosulfonates are still on underway in our group.
研究领域:
有机化学
·
碳水化合物化学
·
药物化学
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ACS Nano
·
2026
·
IF 16
Xiulin Xie,Gaoyu Liu,Yu Zhang,Yiqing Yang,Wentao Niu,Ouyang Lin,Yangyang Bian,Jin Lu,Shengli Zhang,Aiwei Tang
I–III–VI group semiconductor nanocrystals (NCs) with narrow-bandwidth emission have emerged as promising candidates for display technologies due to their tunable emission wavelength and eco-friendly composition. Herein, Ga-rich Ag–In–Ga–S (AIGS) NCs exhibited a narrow photoluminescence emission with a full width at half maximum (fwhm) of 29 nm, which was derived from In-rich Ag–In–Ga–S NCs with an fwhm of 113 nm via a cation exchange strategy. The evolution process was studied systematically using steady- and transient-state spectroscopic techniques, revealing that the narrow photoluminescence (PL) bandwidth primarily originated from free-to-bound radiative recombination. The result was consistent with first-principles calculations. Furthermore, the electroluminescent devices based on AIGS NCs showed a record narrow electroluminescent bandwidth of less than 30 nm, and the maximum external quantum efficiency (EQE) could reach up to 1.2%.
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