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Interaction of brassinosteroid and cytokinin promotes ovule initiation and increases seed number per silique in Arabidopsis

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Journal of Integrative Plant Biology 2022年第3期64卷 702-716页

作者： Song-Hao Zu Yu-Tong Jiang Jin-hui Chang Yan-Jie Zhang Hong-Wei Xue wen-hui lin School of Life Sciences and Biotechnology The Joint International Research Laboratory of Metabolic and Developmental SciencesJoint Center for Single Cell BiologyShanghai Jiao Tong UniversityShanghai 200240China School of Agriculture and Biology Joint Center for Single Cell BiologyShanghai Jiao Tong UniversityShanghai 200240China

Ovule initiation is a key step that strongly influences ovule number and seed ***,mutants with enhanced brassinosteroid(BR)and cytokinin(CK)signaling produce more ovules and have a higher seed number per silique(SNS)than wild-type ***,we crossed BR-and CKrelated mutants to test whether these phytohormones function together in ovule *** determined that simultaneously enhancing BR and CK contents led to higher ovule and seed numbers than enhancing BR or CK separately,and BR and CK enhanced each ***,the BR-response transcription factor BZR1 directly interacted with the CK-response transcription factor ARABIDOPSIS RESPONSE REGULATOR1(ARR1).Treatments with BR or BR plus CK strengthened this interaction and subsequent ARR1 targeting and induction of downstream genes to promote ovule *** CK signaling partially rescued the reduced SNS phenotype of BR-deficient/insensitive mutants whereas enhanced BR signaling failed to rescue the low SNS of CK-deficient mutants,suggesting that BR regulates ovule initiation and SNS through CK-mediated and-independent *** study thus reveals that interaction between BR and CK promotes ovule initiation and increases seed number,providing important clues for increasing the seed yield of dicot crops.

关键词： brassinosteroid cytokinin ovule initiation protein interaction seed number per silique

Core collection construction of tea plant germplasm in Anhui Province based on genetic diversity analysis using simple sequence repeat markers

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农业科学学报:英文版 2023年第9期22卷 2719-2728页

作者： TAO ling-ling TING Yu-jie CHEN Hong-rong wen hui-lin XIE hui LUO ling-yao HUANG Ke-lin ZHU Jun-yan LIU Sheng-rui WEI Chao-ling State Key Laboratory of Tea Plant Biology and Utilization/Key Laboratory of Tea Biology and Tea Processing of Ministry of Agriculture and Rural Affairs/Anhui Provincial Laboratory of Tea Plant Biology and Utilization Anhui Agricultural UniversityHefei 230036P.R.China

The tea plant[Camellia sinensis(L.)***]is an industrial crop in *** Anhui Province has a long history of tea cultivation and has a large resource of tea germplasm with abundant genetic *** reduce the cost of conservation and utilization of germplasm resources,a core collection needs to be *** this end,573 representative tea accessions were collected from six major tea-producing areas in Anhui *** on 60 pairs of simple sequence repeat(SSR)markers,phylogenetic relationships,population structure and principal coordinate analysis(PCoA)were *** analysis indicated that the 573 tea individuals clustered into five groups were related to geographical location and were consistent with the results of the ***,we constructed a core collection consisting of 115 tea individuals,accounting for 20%of the whole *** 115 core collections were considered to have a 90.9%retention rate for the observed number of alleles(Na),and Shannon’s information index(I)of the core and whole collections were highly *** these,39 individuals were preserved in the Huangshan area,accounting for 33.9%of the core collection,while only 10 individuals were reserved in the Jinzhai County,accounting for 8.9%of the core *** of the accessions in the tea plant core collection exhibited a pattern nearly identical to that of the accessions in the entire collection,further supporting the broad representation of the core germplasm in Anhui *** results demonstrated that the core collection could represent the genetic diversity of the original *** present work is valuable for the high-efficiency conservation and utilization of tea plant germplasms in Anhui Province.

关键词： tea plant core collection genetic diversity SSR markers

Prediction model of end-point phosphorus content for BOF based on monotone-constrained BP neural network

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Journal of Iron and Steel Research International 2022年第5期29卷 751-760页

作者： Kai-xiao Zhou wen-hui lin Jian-kun Sun Jiang-shan Zhang De-zheng Zhang Xiao-ming Feng Qing Liu State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing100083China School of Computer and Communication Engineering University of Science and Technology BeijingBeijing100083China Xinyu Iron and Steel Co. Ltd.Xinyu338001JiangxiChina

Dephosphorization is essential content in the steelmaking process,and the process after the converter has no dephosphorization ***,phosphorus must be removed to the required level in the converter *** order to better control the end-point phosphorus content of basic oxygen furnace(BOF),a prediction model of end-point phosphorus content for BOF based on monotone-constrained backpropagation(BP)neural network was *** the theoretical analysis of the dephosphorization process,ten factors that affect the end-point phosphorus content were determined as the input variables of the *** correlations between influencing factors and end-point phosphorus content were determined as the constraint condition of the model.200 sets of data were used to verify the accuracy of the model,and the hit ratios in the range of±0.005%and±0.003%are 94%and 74%,*** fit coefficient of determination of the predicted value and the actual value is 0.8456,and the root-mean-square error is 0.0030;the predictive accuracy is better than that of ordinary BP neural network,and this model has good *** can provide useful reference for real production and also provide a new approach for metallurgical predictive modeling.

关键词： Converter End-point phosphorus content Monotonic constraint BP neural network Prediction model Steelmaking

First-principles study on the diffusion behavior of Cs and I in Cr coating

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Nuclear Science and Techniques 2024年第6期35卷 177-188页

作者： Shu-Ying lin Xiao-Jing Li lin-Bing Jiang Xi-Jun Wu hui-Qin Yin Yu Ma wen-Guan Liu Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of South ChinaHengyang 421001China

Cs and I can migrate through fuel-cladding interfaces and accelerate the cladding corrosion process induced by the fuel-cladding chemical *** coating has emerged as an important candidate for mitigating this chemical *** this study,first-principles calculations were employed to investigate the diffusion behavior of Cs and I in the Cr bulk and grain boundaries to reveal the microscopic interaction mitigation mechanisms at the fuel-cladding *** interaction between these two fission products and the Cr coating were studied systematically,and the Cs and I temperature-dependent diffusion coefficients in Cr were obtained using Bocquet’s oversized solute-atom model and Le Claire’s nine-frequency model,*** results showed that the Cs and I migration barriers were significantly lower than that of Cr,and the Cs and I diffusion coefficients were more than three orders of magnitude larger than the Cr self-diffusion coefficient within the temperature range of Generation-IV fast reactors(below 1000 K),demonstrating the strong penetration ability of Cs and ***,Cs and I are more likely to diffuse along the grain boundary because of the generally low migration barriers,indicating that the grain boundary serves as a fast diffusion channel for Cs and I.

关键词： First-principles calculation Fuel cladding chemical interaction Cr coating Fission product Diffusion Grain boundary

Vacuolar H^(+)-ATPase and BZR1 form a feedback loop to regulate the homeostasis of BR signaling inArabidopsis

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Molecular Plant 2023年第12期16卷 1976-1989页

作者： Yu-Tong Jiang Lu-Han Yang Ji-Xuan Zheng Xian-Chen Geng Yu-Xuan Bai Yu-Chen Wang Hong-Wei Xue wen-hui lin School of Life Sciences and Biotechnology The Joint International Research Laboratory of Metabolic&Developmental SciencesShanghai Jiao Tong UniversityShanghai 200240China Shanghai Collaborative Innovation Center of Agri-Seeds Joint Center for Single Cell BiologyShanghai 200240China School of Agricuture and Biology Shanghai Jiao Tong UniversityShanghai 200240China Zhiyuan College Shanghai Jiao Tong UniversityShanghai 200240China

Brassinosteroid(BR)is a vital plant hormone that regulates plant growth *** RESISTANT1(BZR1)is a key transcription factor in BR signaling,and its nucleocytoplasmic localization is crucial for BR ***,the mechanisms that regulate BzR1 nucleocytoplasmic distribution and thus the homeostasis of BR signaling remain largely *** vacuole is the largest organelle in mature plantcells and plays a key role in maintenance of cell ular pH,storage of intracellular substances,and transport *** this study,weuncovered anovel mechanismof BR signaling homeostasis regulatedbythe vacuolar H+-ATPase(V-ATPase)and BZR1 feedback *** results revealed that the vha-a2 vha-a3 mutant(vha2,lacking V-ATPase activity)exhibits enhanced BR signaling with increased total amount of BZR1,nuclearlocalized BZR1,and the ratio of BZR1/phosphorylated BZR1 in the *** biochemical assays revealed that VHA-a2 and VHA-a3 of V-ATPase interact with the BZR1 protein through a domain that is conserved across multiple ***-a2 and VHA-a3 negatively regulate BR signaling by interacting with BzR1 and promoting its retention in the ***,a series of molecular analyses demonstrated that nuclear-localized BZR1 could bind directlyto specific motifs in the promoters of VHA-a2 andVHAa3topromote their *** together,these results suggest that V-ATPase and BzR1 mayforma feedback regulatory loop to maintain thehomeostasis of BR signaling in Arabidopsis,providing new insights into vacuole-mediated regulation of hormone signaling.

关键词： BR BZR1 vacuole V-ATPase tonoplast

Advancements in the modification of magnesium-based hydrogen storage materials

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Progress in Natural Science:Materials International 2024年第3期34卷 540-554页

作者： lin Yang wen Zeng Yanqiong Li College of Materials Science and Engineering Chongqing University School of Electronic Information & Electrical Engineering Chongqing University of Arts and Sciences

Magnesium-based hydrogen storage materials represent a hydrogen storage technology with broad application prospects. As the global energy crisis and environmental pollution issues become increasingly severe, hydrogen,as a clean and efficient energy source, has garnered growing attention. Magnesium-based hydrogen storage,serving as a crucial means for storing and transporting hydrogen, is gaining prominence due to its abundant resources, low cost, low density, and high hydrogen storage density. However, challenges in terms of absorption/desorption rates, temperature, activation energy, and enthalpy during hydrogen application impede its development. To address these challenges, this paper systematically reviews current research on magnesium-based hydrogen storage materials, encompasses their types, characteristics, and hydrogen absorption ***, it delves into the impacts of nanoscale dimensions, alloying, doping, and catalysis on the performance of magnesium-based materials. The aim is to provide valuable insights for research in related fields.

关键词： For hydrogen storage Magnesium-based materials Research on modifying

Noninvasive beam diagnosis based on the TM_(010)mode

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Nuclear Science and Techniques 2024年第7期35卷 115-125页

作者： Chuang-Ye Song wen-hui Huang Department of Engineering Physics Tsinghua University BeijingBeijing100084China of Education Beijing100084China

A resonant cavity based on the TM_(010)mode is an effective tool for noninvasive beam characterization. This technique has the advantages of a high signal-to-noise ratio, compact structure, and is related to multiple parameters compared with other beam monitors. In this study, high-precision measurements of the bunch charge, arrival time, bunch length, and energy parameters based on the TM_(010)mode are discussed. A cavity beam arrival time monitor(BAM) utilizing a phase cavity has been widely used in many facilities. Regarding bunch-length measurements, the influence of the beam energy, beam offset,and longitudinal spectrum on the TM_(010)mode are carefully considered to reduce errors, and the theoretical resolution of two cavities with different frequencies is analyzed. Owing to the dependence of the beam velocity of the beam loss factor, this method can also be used for the detection low beam energy using two cavities with the same frequency but different cavity lengths. A set of three cavities with different lengths and frequencies of 1.902 and 11.424 GHz is presented for measuring the four aforementioned parameters.

关键词： TM_(010)mode Noninvasive diagnosis Beam length Low energy

Study on a conical bearing for acceleration-sensitive equipment

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Earthquake Engineering and Engineering Vibration 2024年第1期23卷 103-128页

作者： Pang hui Xu wen Dai Junwu Jiang Tao Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering MechanicsChina Earthquake AdministrationHarbin 150080China Key Laboratory of Earthquake Disaster Mitigation Ministry of Emergency ManagementHarbin 150080China School of Civil Engineering and Transportation Beihua UniversityJilin 132013China

Seismic isolation effectively reduces seismic demands on building structures by isolating the superstructure from ground vibrations during ***,isolation strategies give less attention to acceleration-sensitive systems or ***,as the isolation layer’s displacement grows,the stiffness and frequency of traditional rolling and sliding isolation bearings increases,potentially causing self-centering and resonance *** a result,a new conical pendulum bearing has been selected for acceleration-sensitive equipment to increase self-centering capacity,and additional viscous dampers are incorporated to enhance system ***,the theoretical formula for conical pendulum bearings is supplied to analyze the device’s dynamic parameters,and shake table experiments are used to determine the proposed device’s isolation efficiency under various *** to the test results,the newly proposed devices have remarkable isolation performance in terms of minimizing both acceleration and displacement ***,a numerical model of the isolation system is provided for further research,and the accuracy is demonstrated by the aforementioned experiments.

关键词： seismic isolation acceleration-sensitive equipment the conical pendulum bearing shake table tests isolation performance,numerical model

Local Hamilton type Gradient Estimates and Harnack Inequalities for Nonlinear Parabolic Equations on Riemannian Manifolds

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Acta Mathematicae Applicatae Sinica 2024年第2期40卷 539-546页

作者： wen WANG Da-peng XIE hui ZHOU School of Mathematics and Statistics Hefei Normal UniversityHefei 230601China

In this paper,we prove a local Hamilton type gradient estimate for positive solution of the nonlinear parabolic equation ut(x,t)=Δu(x,t)+au(x,t) ln u(x,t)+bu^(α)(x,t),on M×(-∞,∞) with α∈R,where a and b are *** ... 详细信息

关键词： nonlinear parabolic equation gradient estimate Harnack inequality