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Natural variations of ZmSRO1d modulate the trade-off between drought resistance and yield by affecting ZmRBOHC-mediated stomatal ROS production in maize

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Molecular Plant 2022年第10期15卷 1558-1574页

作者： Huajian Gao Junjun Cui shengxue liu Shuhui Wang Yongyan Lian Yunting Bai Tengfei Zhu Haohao Wu Yijie Wang Shiping Yang Xuefeng Li Junhong Zhuang Limei Chen Zhizhong Gong Feng Qin Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Plant Physiology and Biochemistry College of Biological SciencesChina Agricultural UniversityBeijing 100193China Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBejing 100193China School of Life Science Institute of Life Science and Green DevelopmentHebei UniversityBaodingHebei071002China

While crop yields have historically increased,drought resistance has become a major concern in the context of global climate change.The trade-off between crop yield and drought resistance is a common phenomenon;however,the underlying molecular modulators remain undetermined.Through genome-wide association study,we revealed that three non-synonymous variants in a drought-resistant allele of ZmSRO1d-R resulted in plasma membrane localization and enhanced mono-ADP-ribosyltransferase activity of ZmSRO1d toward ZmRBOHC,which increased reactive oxygen species(ROS)levels in guard cells and promoted stomatal closure.ZmSRO1d-R enhanced plant drought resilience and protected grain yields under drought conditions,but it led to yield drag under favorable conditions.In contrast,loss-of-function mutants of ZmRBOHC showed remarkably increased yields under well-watered conditions,whereas they showed compromised drought resistance.Interestingly,by analyzing 189 teosinte accessions,we found that the ZmSRO1d-R allele was present in teosinte but was selected against during maize domestication and modern breeding.Collectively,our work suggests that the allele frequency reduction of ZmSRO1d-R in breeding programs may have compromised maize drought resistance while increased yields.Therefore,introduction of the ZmSRO1d-R allele into modern maize cultivars would contribute to food security under drought stress caused by global climate change.

关键词： ZmSRO1d stomatal ROS drought resistance yield maize

SnSe field-effect transistors with improved electrical properties

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Nano Research 2022年第2期15卷 1532-1537页

作者： Shuai liu Yujia Chen shengxue Yang Chengbao Jiang School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Low-symmetry two-dimensional(2D)materials,with unique in-plane direction-dependent optical,electrical,and thermoelectric properties,have been intensively studied for their potential application values in advanced electronic and optoelectronic devices.However,since anisotropic 2D materials are highly sensitive to the environmental factors,researches on their high-performance field-effect transistors(FETs)are still limited.Here,we report a high-performance SnSe FET based on a van der Waals(vdWs)heterostructure of SnSe encapsulated in hexagonal boron nitride(/7BN)together with graphene contacts.The device exhibits a high on/off ratio exceeding 1 × 10^(9),and a carrier mobility of 118 cm^(2)·V^(-1)s^(-1).Our work highlights low-symmetry 2D SnSe holds potential to be used for designing excellent electronic devices.

关键词： few-layer SnSe anisotropy field-effect transistors van der Waals heterostructure hysteresis

硅酮粉改性超高分子量聚乙烯及其熔体纺丝加工性能

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工程塑料应用 2024年第3期52卷 28-32页

作者：刘杰高阳秦升学张弘斌周海萍山东科技大学机械电子工程学院山东青岛266590

针对超高分子量聚乙烯(PE-UHMW)熔体加工性能差的问题,应用硅酮粉,采用熔融共混方法对PE-UHMW进行改性,以提高其熔体加工时的流动性。通过扫描电子显微镜与能量色散谱(EDS)表征了硅酮粉在PE-UHMW中的分布,并采用熔体速率测试、旋转流变... 详细信息

针对超高分子量聚乙烯(PE-UHMW)熔体加工性能差的问题,应用硅酮粉,采用熔融共混方法对PE-UHMW进行改性,以提高其熔体加工时的流动性。通过扫描电子显微镜与能量色散谱(EDS)表征了硅酮粉在PE-UHMW中的分布,并采用熔体速率测试、旋转流变测试,分析了硅酮粉含量对PE-UHMW熔体流动速率与流变性能的影响。对改性后的PE-UHMW采用熔体纺丝法制备了PE-UHMW单丝,并进行了拉伸强度测试。实验结果表明,随着硅酮粉的增加,其分散性逐渐变差,PE-UHMW熔体流动速率随硅酮粉含量先增加后降低,当硅酮粉质量分数达到4%,其熔体流动速率最高,复数黏度与储能模量最低,5%质量分数的硅酮粉在PE-UHMW基体中团聚较明显,改性后的PE-UHMW熔体流动性降低。熔体纺丝实验结果表明改性后的PE-UHMW可以通过普通单螺杆挤出机熔融挤出初生丝,经超倍热拉伸可以制备高强度单丝。当拉伸倍率为36时,质量分数3%的硅酮粉改性PE-UHMW单丝拉伸强度最高,可达1565MPa。因此综合考虑加工性能与单丝强度,采用质量分数3%的硅酮粉改性PE-UHMW较合适。

关键词：超高分子量聚乙烯硅酮粉熔融共混熔体纺丝拉伸强度

基于Struik模型的聚乙烯管道蠕变行为分析

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塑料 2024年第3期53卷 39-43,116页

作者：徐含刘杰张战欢杨玉超秦升学王庆昭山东科技大学机械电子工程学院山东青岛266590 青岛海聚新材料科技有限公司山东青岛266590 山东科技大学化学与生物工程学院山东青岛266590

结合聚乙烯管道长期负载的变形情况,对其蠕变行为进行研究。基于管道的Struik模型进行回归分析,求得时间硬化蠕变模型参数,建立了有限元模型。对管材在不同压力、不同壁厚下的蠕变情况进行了模拟,并在恒定压力下进行了试验,分析了管道... 详细信息

结合聚乙烯管道长期负载的变形情况,对其蠕变行为进行研究。基于管道的Struik模型进行回归分析,求得时间硬化蠕变模型参数,建立了有限元模型。对管材在不同压力、不同壁厚下的蠕变情况进行了模拟,并在恒定压力下进行了试验,分析了管道的蠕变规律。结果表明,对于实验中研究的φ110×1.6 MPa型号的聚乙烯管道,蠕变随压力的增大而增大,压力每增大0.2P_(N),蠕变量增大约0.5%;增大聚乙烯管道的管壁厚度,环向蠕变逐渐减小,当管壁厚度由5 mm增大至10 mm时,100 h内的环向蠕变量减少了11%;有限元模拟结果与实验结果基本一致。采用时间硬化蠕变模型可以有效地进行聚乙烯管道蠕变有限元模拟,对聚乙烯管道设计与工程应用具有一定的指导作用。

关键词：聚乙烯管道蠕变性能 Struik模型有限元模拟时间硬化蠕变模型

Novel P2-type layered medium-entropy ceramics oxide as cathode material for sodium-ion batteries

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Journal of Advanced Ceramics 2022年第1期11卷 158-171页

作者： shengxue YAN Shaohua LUO liu YANG Jian FENG Pengwei LI Qing WANG Yahui ZHANG Xin liu School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

High-entropy oxides(HEOs)and medium-entropy oxides(MEOs)are new types of single-phase solid solution materials.MEOs have rarely been reported as positive electrode material for sodium-ion batteries(SIBs).In this study,we first proposed the concept of the application of MEOs in SIBs.P2-type 3-cation oxide Na_(2/3)Ni_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)and 4-cation oxide Na_(2/3)Ni_(1/3)Mn_(1/3)Fe_(1/3-x)Al_(x)O_(2)(NaNMFA)were prepared using the solid-state method,rather than the doping technology.In addition,the importance of the concept of entropy stabilization in material performance and battery cycling was demonstrated by testing 3-cation(NaNMF)and 4-cation(NaNMFA)oxides in the same system.Thus,NaNMFA can provide a reversible capacity of about 125.6 mAh-g”1 in the voltage range of 2-4.2 V,and has enhanced cycle stability.The capacity and decay law of the MEO batteries indicate that the configurational entropy(1.28 R(NaNMFA)>1.10 R(NaNMF))of the cationic system,is the main factor affecting the structural and cycle stability of the electrode material.This work emphasizes that the rational design of MEOs with novel structures and different electrochemically active elements may be the strategy for exploring high-performance SIB cathode materials in next-generation energy storage devices.

关键词： cathode materials medium-entropy oxide(MEO) configuration entropy electrochemical performance sodium-ion batteries(SIBs)

Research progress of tunnel-type sodium manganese oxide cathodes for SIBs

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Chinese Chemical Letters 2022年第5期33卷 2316-2326页

作者： Jie Feng Shaohua Luo Kexing Cai shengxue Yan Qing Wang Yahui Zhang Xin liu School of Materials Science and Engineering Northeastern UniversityShenyang 110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004China Qinhuangdao Laboratory of Resources Cleaner Conversion and Efficient Utilization Qinhuangdao 066004China

Among the large energy storage batteries,the sodium ion batteries(SIBs)are attracted huge interest due to the fact of its abundant raw materials and low cost,and has become the most promising secondary battery.Tunnel-type sodium manganese oxides(TMOs)are industrialized cathode materials because of their simple synthesis method and proficient electrochemical performance.Na_(0.44)MnO_(2)(NMO)is considered the best candidate material for all tunnel-type structural materials.In this paper,the research progress in charge and discharge of cathode materials for tunnel-type structural SIBs is reviewed,the redox mechanism and all sorts of synthesis methods and different coating methods lead to different morphology and electrochemical properties of materials and the classification of electrolytes and nonaqueous electrolytes.The development and utility of aqueous solutions are discussed,and the mechanism is analyzed.Summarized the cationic potential of the transition metal oxide for tunnel structure,plays a vital role in predicting and designing the cathode material of this structure.In addition,the future opportunities and challenges for such tunnel-type SIBs in this field are described in detail.

关键词： Sodium-ion batteries Na 0.44 MnO_(2) Cathode materials Doping Nonaqueous electrolytes

Thermal Deformation Behavior and Processing Map of a Novel CrFeNiSi_(0.15)Medium Entropy Alloy

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Acta Metallurgica Sinica(English Letters) 2023年第11期36卷 1870-1882页

作者： Hongbin Zhang Kang Chen Zhongwei Wang Haiping Zhou Chengcheng Shi shengxue Qin Jie liu Tingjun Lv Jian Xu College of Mechanical and Electronic Engineering Shandong University of Science and TechnologyQingdao266590China School of Mechanical Engineering Shandong University of TechnologyZibo255000China Zibo Yuan Xu Metallurgical Machinery Co LtdZibo255120China

The thermal deformation behavior of a novel CrFeNiSi_(0.15)medium entropy alloy(MEA)was studied via isothermal compression experiments,with the processing parameter range of 900–1200℃and 0.001–1 s^(−1).According to experimental data,the modified constitutive equation had been obtained,which precisely predicted the flow behavior of CrFeNiSi_(0.15)MEA during thermal deformation.At the same time,the processing map was established on the basis of the dynamic material model(DMM)theory.According to the map,the optimal processing parameters were determined at 1130–1200℃/0.06–1 s−1,under which the power dissipation efficiency could reach above 34%.The peak efficiency was above 38%,which occurred at 1200℃/1 s^(−1).In such parameter,complete dynamic recrystallization(DRX)also occurred.The flow instability of CrFeNiSi_(0.15)MEA was estimated to occur at 900–985℃/0.12–1 s^(−1),which was shown as grain boundaries cracking.Furthermore,both the continuous DRX(CDRX)and discontinuous DRX(DDRX)occurred simultaneously during thermal deformation.Meanwhile,some twins were also newly formed during DRX process,most of which were primary twins.The occurrence of twinning was beneficial to promote the development of DRX behavior.

关键词： Medium entropy alloys Thermal deformation behavior Constitutive model Processing maps

Developing an efficient and visible prime editing system to restore tobacco 8-hydroxy-copalyl diphosphate gene for labdane diterpene Z-abienol biosynthesis

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Science China(Life Sciences) 2023年第12期66卷 2910-2921页

作者： Jianduo Zhang Lu Zhang Chengwei Zhang Yongxing Yang Huayin liu Lu Li shengxue Zhang Xianggan Li Xinxiang liu Ya liu Jin Wang Guangyu Yang Qingyou Xia Weiguang Wang Jinxiao Yang Yunnan Key Laboratory of Tobacco Yunnan Academy of Tobacco ScienceKunming 650231China Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding Beijing Academy of Agriculture&Forestry SciencesBeijing 100089China Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal Endophytes State Ethnic Affairs CommissionYunnan Minzu UniversityKunming 650031China Cropedit Biotechnology Co.Ltd. Beijing 102206China Biological Science Research Center Southwest UniversityChongqing 400716China

Prime editing(PE)is a versatile CRISPR-Cas based precise genome-editing platform widely used to introduce a range of possible base conversions in various organisms.However,no PE systems have been shown to induce heritable mutations in tobacco,nor in any other dicot.In this study,we generated an efficient PE system in tobacco that not only introduced heritable mutations,but also enabled anthocyanin-based reporter selection of transgene-free T_(1) plants.This system was used to confer Zabienol biosynthesis in the allotetraploid tobacco cultivar HHDJY by restoring a G>T conversion in the NtCPS2 gene.High levels of Z-abienol were detected in the leaves of homozygous T_(1) plants at two weeks after topping.This study describes an advance in PE systems and expands genome-editing toolbox in tobacco,even in dicots,for use in basic research and molecular breeding.And restoring biosynthesis of Z-abienol in tobacco might provide an efficient way to obtain Z-abienol in plants.

关键词： prime editing Z-abienol biosynthesis visible marker CRISPR Cas9 tobacco

Strong in-plane optical anisotropy in 2D van der Waals antiferromagnet VOCl

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Nano Research 2023年第5期16卷 7481-7488页

作者： Tianle Zhang Jiantao Du Wenjun Wang Keming Wu Shuai Yue Xinfeng liu Wanfu Shen Chunguang Hu Minghui Wu Zhe Qu shengxue Yang Chengbao Jiang School of Materials Science and Engineering Beihang UniversityBeijing 100191China Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory Chinese Academy of SciencesHefei 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefei 230026China CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Precision Measuring Technology and Instruments Tianjin UniversityTianjin 300072China College of Materials and Chemical Engineering MinJiang UniversityFuzhou 350108China Fujian Key laboratory of Functional marine Sensing materials Minjiang UniversityFuzhou 350108China

Two-dimensional(2D)van der Waals(vdW)magnetic materials with strong in-plane anisotropy can make possible novel applications such as optospintronics and strain sensors.In this work,the strong in-plane optical anisotropy in 2D vdW antiferromagnet VOCl has been systematically investigated.The optical brightness and absorption coefficient exhibit evident periodic variation with the change of incident polarization,unveiling the strong in-plane anisotropic optical absorption.The Raman intensity in this material shows obvious dependence on the polarization angle of incident laser,demonstrating that the phonon properties possess strong in-plane anisotropy.Besides,we have also realized in-situ visualization of in-plane optical reflection anisotropy in this material.Moreover,the strong second harmonic generation(SHG)signal can only be detected when the incident polarization is along specific in-plane crystal orientations,illustrating the presence of strong in-plane nonlinear optical anisotropy.These findings will benefit the applications of VOCl in the field of polarization-dependent electronics and spintronics.

关键词： two-dimensional material vanadium oxide chloride in-plane optical anisotropy linear dichroism nonlinear optics