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Disruption of LEAF LESION MIMIC 4 affects ABA synthesis and ROS accumulation in rice
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作者 Hao Wu Gaoxing Dai +11 位作者 Rao Yuchun Kaixiong Wu Junge wang Peng Hu Yi Wen yueying wang Lixin Zhu Bingze Chai Jialong Liu Guofu Deng Qian Qian Jiang Hu 《The Crop Journal》 SCIE CSCD 2023年第5期1341-1352,共12页
Lesion mimic mutants(LMMs) are advantageous materials for studying programmed cell death(PCD).Although some rice LMM genes have been cloned, the diversity of functions of these genes indicates that the mechanism of ce... Lesion mimic mutants(LMMs) are advantageous materials for studying programmed cell death(PCD).Although some rice LMM genes have been cloned, the diversity of functions of these genes indicates that the mechanism of cell death regulation in LMMs needs further study. In this study, we identified a rice light-dependent leaf lesion mimic mutant 4(llm4) that showed abnormal chloroplast structure, photoinhibition, reduced photosynthetic protein levels, massive accumulation of reactive oxygen species(ROS), and PCD. Map-based cloning and complementation testing revealed that LLM4 encodes zeaxanthin epoxidase(ZEP), an enzyme involved in the xanthophyll cycle, which functions in plant photoprotection,ROS scavenging, and carotenoid and abscisic acid(ABA) biosynthesis. The ABA content was decreased,and the contents of 24 carotenoids differed between the llm4 mutant and the wild type(WT). The llm4mutant showed reduced dormancy and greater sensitive to ABA than the WT. We concluded that the mutation of LLM4 resulted in the failure of xanthophyll cycle, in turn causing ROS accumulation. The excessive ROS accumulation damaged chloroplast structure and induced PCD, leading eventually to the formation of lesion mimics. 展开更多
关键词 RICE Lesion mimic Reactive oxygen species Programmed cell death Zeaxanthin epoxidase Xanthophyll cycle CAROTENOID Abscisic acid
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A centromere map based on super pan-genome highlights the structure and function of rice centromeres 被引量:1
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作者 Yang Lv Congcong Liu +32 位作者 Xiaoxia Li yueying wang Huiying He Wenchuang He Wu Chen Longbo Yang Xiaofan Dai Xinglan Cao Xiaoman Yu Jiajia Liu Bin Zhang Hua Wei Hong Zhang Hongge Qian Chuanlin Shi Yue Leng Xiangpei Liu Mingliang Guo Xianmeng wang Zhipeng Zhang Tianyi wang Bintao Zhang Qiang Xu Yan Cui Qianqian Zhang Qiaoling Yuan Noushin Jahan Jie Ma Xiaoming Zheng Yongfeng Zhou Qian Qian Longbiao Guo Lianguang Shang 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2024年第2期196-207,共12页
Rice(Oryza sativa)is a significant crop worldwide with a genome shaped by various evolutionary factors.Rice centromeres are crucial for chromosome segregation,and contain some unreported genes.Due to the diverse and c... Rice(Oryza sativa)is a significant crop worldwide with a genome shaped by various evolutionary factors.Rice centromeres are crucial for chromosome segregation,and contain some unreported genes.Due to the diverse and complex centromere region,a comprehensive understanding of rice centromere structure and function at the population level is needed.We constructed a high-quality centromere map based on the rice super pangenome consisting of a 251-accession panel comprising both cultivated and wild species of Asian and African rice.We showed that rice centromeres have diverse satellite repeat CentO,which vary across chromosomes and subpopulations,reflecting their distinct evolutionary patterns.We also revealed that long terminal repeats(LTRs),especially young Gypsy-type LTRs,are abundant in the peripheral CentO-enriched regions and drive rice centromere expansion and evolution.Furthermore,high-quality genome assembly and complete telomere-to-telomere(T2T)reference genome enable us to obtain more centromeric genome information despite mapping and cloning of centromere genes being challenging.We investigated the association between structural variations and gene expression in the rice centromere.A centromere gene,OsMAB,which positively regulates rice tiller number,was further confirmed by expression quantitative trait loci,haplotype analysis and clustered regularly interspaced palindromic repeats(CRISPR)/CRISPR-associated protein9 methods.By revealing the new insights into the evolutionary patterns and biological roles of rice centromeres,our finding will facilitate future research on centromere biology and crop improvement. 展开更多
关键词 CENTROMERE super pan-genome CentoO satellite repeat RICE
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GR5 acts in the G protein pathway to regulate grain size in rice
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作者 yueying wang Yang Lv +22 位作者 Haiping Yu Peng Hu Yi Wen Junge wang Yiqing Tan Hao Wu Lixin Zhu Kaixiong Wu Bingze Chai Jialong Liu Dali Zeng Guangheng Zhang Li Zhu Zhenyu Gao Guojun Dong Deyong Ren Lan Shen Qiang Zhang Qing Li Longbiao Guo Guosheng Xiong Qian Qian Jiang Hu 《Plant Communications》 SCIE CSCD 2024年第1期181-195,共15页
Grain size is an important determinant of grain yield in rice.Although dozens of grain size genes have been reported,the molecular mechanisms that control grain size remain to be fully clarified.Here,we report the clo... Grain size is an important determinant of grain yield in rice.Although dozens of grain size genes have been reported,the molecular mechanisms that control grain size remain to be fully clarified.Here,we report the cloning and characterization of GR5(GRAIN ROUND 5),which is allelic to SMOS1/SHB/RLA1/NGR5 and en-codes an AP2 transcription factor.GR5 acts as a transcriptional activator and determines grain size by influencing cell proliferation and expansion.We demonstrated that GR5 physically interacts withfive Gg subunit proteins(RGG1,RGG2,DEP1,GS3,and GGC2)and acts downstream of the G protein complex.Four downstream target genes of GR5 in grain development(DEP2,DEP3,DRW1,and CyCD5;2)were re-vealed and their core T/CGCAC motif identified by yeast one-hybrid,EMSA,and ChIP–PCR experiments.Our results revealed that GR5 interacts with Gg subunits and cooperatively determines grain size by regu-lating the expression of downstream target genes.Thesefindings provide new insight into the genetic reg-ulatory network of the G protein signaling pathway in the control of grain size and provide a potential target for high-yield rice breeding. 展开更多
关键词 grain size G proteinγsubunit GR5 AP2 transcription factor rice(Oryza sativa L.)
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Leading High-Quality Development of Service Industry with Institutional Innovation 被引量:1
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作者 yueying wang Jiechang Xia 《China Finance and Economic Review》 2023年第2期113-128,F0003,共17页
To realize the transition from high-speed growth to high-quality development,it is necessary not only to change the way and path of economic growth,but also to speed up the improvement of the institutional system that... To realize the transition from high-speed growth to high-quality development,it is necessary not only to change the way and path of economic growth,but also to speed up the improvement of the institutional system that is compatible with highquality development.China has unique institutional advantages in promoting the high-quality development of the service industry(HQDSI),but the service industry is a typical institution-intensive industry that faces higher institutional barriers than the manufacturing industry.Therefore,institutional reform and business environment optimization are particularly important to the promotion of HQDSI,and the effect is also very prominent.Facing the future,we should lead HQDSI by building a high-standard socialist market economy,promote the high-quality and efficient development of the service industry by standardizing it,and encourage the innovation and entrepreneurship of the industry by improving the institutional environment,thus steadily boosting HQDSI in the new era of reform and opening up. 展开更多
关键词 service industry high quality development institutional barrier institutional innovation
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Resveratrol activation of SIRT1/MFN2 can improve mitochondria function,alleviating doxorubicin-induced myocardial injury 被引量:1
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作者 Qingling Zhang Yunpeng Zhang +7 位作者 Bingxin Xie Daiqi Liu yueying wang Zandong Zhou Yue Zhang Emma King Gary Tse Tong Liu 《Cancer Innovation》 2023年第4期253-264,共12页
Background Doxorubicin is a widely used cytotoxic chemotherapy agent for treating different malignancies.However,its use is associated with dose-dependent cardiotoxicity,causing irreversible myocardial damage and sign... Background Doxorubicin is a widely used cytotoxic chemotherapy agent for treating different malignancies.However,its use is associated with dose-dependent cardiotoxicity,causing irreversible myocardial damage and significantly reducing the patient's quality of life and survival.In this study,an animal model of doxorubicin-induced cardiomyopathy was used to investigate the pathogenesis of doxorubicin-induced myocardial injury.This study also investigated a possible treatment strategy for alleviating myocardial injury through resveratrol therapy in vitro.Methods Adult male C57BL/6J mice were randomly divided into a control group and a doxorubicin group.Body weight,echocardiography,surface electrocardiogram,and myocardial histomorphology were measured.The mechanisms of doxorubicin cardiotoxicity in H9c2 cell lines were explored by comparing three groups(phosphate-buffered saline,doxorubicin,and doxorubicin with resveratrol).Results Compared to the control group,the doxorubicin group showed a lower body weight and higher systolic arterial pressure,associated with reduced left ventricular ejection fraction and left ventricular fractional shortening,prolonged PR interval,and QT interval.These abnormalities were associated with vacuolation and increased disorder in the mitochondria of cardiomyocytes,increased protein expression levels of α-smooth muscle actin and caspase 3,and reduced protein expression levels of Mitofusin2(MFN2)and Sirtuin1(SIRT1).Compared to the doxorubicin group,doxorubicin+resveratrol treatment reduced caspase 3 and manganese superoxide dismutase,and increased MFN2 and SIRT1 expression levels.Conclusion Doxorubicin toxicity leads to abnormal mitochondrial morphology and dysfunction in cardiomyocytes and induces apoptosis by interfering with mitochondrial fusion.Resveratrol ameliorates doxorubicin-induced cardiotoxicity by activating SIRT1/MFN2 to improve mitochondria function. 展开更多
关键词 cardio-oncology doxorubicin-induced cardiomyopathy mitochondriafunction RESVERATROL SIRT1 agonists
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Homoharringtonine synergy with oridonin in treatment of t(8;21) acute myeloid leukemia 被引量:7
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作者 Weina Zhang Ying Lu +6 位作者 Tao Zhen Xinjie Chen Ming Zhang Ping Liu Xiangqin Weng Bing Chen yueying wang 《Frontiers of Medicine》 SCIE CAS CSCD 2019年第3期388-397,共10页
Collaboration of c-KIT mutations with AML1-ETO (AE) has been demonstrated to induce t(8;21) acute myeloid leukemia (AML).Targeted therapies designed to eliminate AE and c-KIT oncoproteins may facilitate effective trea... Collaboration of c-KIT mutations with AML1-ETO (AE) has been demonstrated to induce t(8;21) acute myeloid leukemia (AML).Targeted therapies designed to eliminate AE and c-KIT oncoproteins may facilitate effective treatment of t(8;21) AML.Homoharringtonine (HHT) features activity against tumor cells harboring c-KIT mutations,whereas oridonin can induce t(8;21) AML cell apoptosis and AE cleavage.Therefore,studies should explore the efficacy of combination therapy with oridonin and HHT in t(8;21) AML.In this study,we investigated the synergistic effects and mechanism of oridonin combined with HHT in t(8;21) AML cell line and mouse model.The two drugs synergistically inhibited cell viability and induced significant mitochondrial membrane potential loss and apoptosis.Oridonin and HHT induced significant downregulation of c-KIT and its downstream signaling pathways and promoted AE cleavage.HHT increased intracellular oridonin concentration by modulating the expressions of MRP1 and MDR1,thus enhancing the effects of oridonin.The combination of oridonin and HHT prolonged t(8;21) leukemia mouse survival.In conclusion,oridonin and HHT exert synergistic effects against t(8;21) leukemia in vivo and in vitro,thereby indicating that their combination may be an effective therapy for t(8;21) leukemia. 展开更多
关键词 AML1-ETO C-KIT HOMOHARRINGTONINE ORIDONIN t(8 21) AML SYNERGISTIC effect
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Effect of the injection pressure and orifice diameter on the spray characteristics of biodiesel 被引量:7
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作者 Limin Geng Yanjuan wang +1 位作者 yueying wang Huimei Li 《Journal of Traffic and Transportation Engineering(English Edition)》 CSCD 2020年第3期331-339,共9页
The purpose of this study was to analyze the influence of the injection pressure and orifice diameter on the spray characteristics of soybean biodiesel.The macroscopic spray characteristics of the spray tip penetratio... The purpose of this study was to analyze the influence of the injection pressure and orifice diameter on the spray characteristics of soybean biodiesel.The macroscopic spray characteristics of the spray tip penetration(STP)and spray cone angle(SCA)were tested with a high-speed camera system.The microscopic spray characteristics,such as the statistical size distribution,Sauter mean diameter(SMD),representative diameters and dispersion boundary,were obtained using a Malvern laser particle size analyzer(PSA).The test results showed that with an increasing injection pressure,the STP and the SCA of the biodiesel increased,but the curves of size-volume distribution and cumulative volume distribution of the atomized droplets shifted to smaller diameters.The SMD and representative diameters decreased,and the dispersion boundary was reduced.Moreover,with a decreasing orifice diameter,longer STP and smaller SCA values were observed.Similarly,the size distribution curves of the atomized biodiesel droplets shifted to smaller diameters.The SMD and representative diameters were reduced,and the relative size range of the atomized biodiesel droplets was enlarged.Higher injection pressures and smaller orifice diameters improved the biodiesel atomization;however,the smaller orifice diameters caused an inhomogeneous size distribution of the atomized biodiesel droplets. 展开更多
关键词 BIODIESEL Injection pressure Orifice diameter Spray characteristics Size distribution
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Event-triggered adaptive finite-time control for nonlinear systems under asymmetric time-varying state constraints 被引量:2
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作者 Yan WEI Jun LUO +1 位作者 Huaicheng YAN yueying wang 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2021年第12期1610-1624,共15页
This paper investigates the issue of event-triggered adaptive finite-time state-constrained control for multi-input multi-output uncertain nonlinear systems.To prevent asymmetric time-varying state constraints from be... This paper investigates the issue of event-triggered adaptive finite-time state-constrained control for multi-input multi-output uncertain nonlinear systems.To prevent asymmetric time-varying state constraints from being violated,a tan-type nonlinear mapping is established to transform the considered system into an equivalent“non-constrained”system.By employing a smooth switch function in the virtual control signals,the singularity in the traditional finite-time dynamic surface control can be avoided.Fuzzy logic systems are used to compensate for the unknown functions.A suitable event-triggering rule is introduced to determine when to transmit the control laws.Through Lyapunov analysis,the closed-loop system is proved to be semi-globally practical finite-time stable,and the state constraints are never violated.Simulations are provided to evaluate the effectiveness of the proposed approach. 展开更多
关键词 Event-triggered control Nonlinear mapping Adaptive fuzzy control FINITE-TIME State constraints
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Tunable optical topological transition of Cherenkov radiation 被引量:1
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作者 TIANYU ZHANG XIAOQIUYAN ZHANG +8 位作者 ZHUOCHENG ZHANG XINGXING XU yueying wang ZHAOYUN DUAN YANYU WEI YUBIN GONG SHENGGANG LIU MIN HU TAO ZHAO 《Photonics Research》 SCIE EI CAS CSCD 2022年第7期1650-1660,共11页
Approaches to generate and manipulate Cherenkov radiation(CR)are challenging yet meaningful.Optical topological transition(OTT)in novel materials and metamaterials is also promising for modern photonics.We study the O... Approaches to generate and manipulate Cherenkov radiation(CR)are challenging yet meaningful.Optical topological transition(OTT)in novel materials and metamaterials is also promising for modern photonics.We study the OTT of CR in graphene-based hyperbolic metamaterials(GHMs)for the first time.In GHMs,conventional and hyperbolic CR can be switched when crossing the topological transition frequency.This frequency can be altered by metamaterial components and external optical elements.For instance,external ultrafast optical pumps cause an ultrafast OTT from the elliptical to the hyperbolic state.Then,hyperbolic CR can be excited by lowenergy electrons by leveraging the excellent photothermal properties of graphene.Hyperbolic CR vanishes when the GHM returns to its original state.Furthermore,graphene nonlocality occurs when the electron velocity is low enough,corresponding to a large wave vector.Concretely,when the electron velocity approaches the Fermi velocity of graphene,a nonlocality-induced OTT modifies the plasmonic properties of the GHM and brings a new lower velocity threshold of hyperbolic CR.Therefore,hyperbolic CR can only be induced in a limited velocity range.These findings pave the way for understanding CR properties in active plasmonic metamaterials and may be applied to complex photonic and polaritonic systems. 展开更多
关键词 STATE HYPERBOLIC TOPOLOGICAL
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Non-woven cotton fabric based intimately coupling of photocatalysis and biodegradation system for efficient removal of Cu(Ⅱ)complex in water
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作者 Yuxuan Ye Peng Yang +8 位作者 Yuwei Deng Yezhi Yang Kun Zhang yueying wang Wenjing Shang Qiang Li Lei Sun Fei Pan Dongsheng Xia 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第6期3127-3132,共6页
The efficient remediation of heavy metal complexes in water has become a difficult and challenging task owing to their high stability and strong mobility.In this study,a novel strategy was employed for highly efficien... The efficient remediation of heavy metal complexes in water has become a difficult and challenging task owing to their high stability and strong mobility.In this study,a novel strategy was employed for highly efficient removal of Cu-citrate by using intimately coupled photocatalysis and biodegradation(ICPB)system with non-woven cotton fabric as a carrier.Experimental results showed that the ICPB system caused94%Cu removal,which was higher than those of single photocatalysis.After 5 cycles,Cu removal efficiency could still reach 78%within 5 h.The existence of 0–40 mg/L citrate had negligible influence,whereas the presence of 60–100 mg/L citrate exhibited a limited adverse effect on Cu removal(~70%).The decomplexation of Cu-citrate was realized via the function of free radicals and microorganisms.Two main processes,such as bio-adsorption of Cu^(2+) by microorganisms,deposition of Cu^(0) on the surface of material,played important role in Cu removal from aqueous solution.The dominant microorganisms in the system were Proteobacteria,Actinobacteria,Bacteroidetes,Chloroflexi,Chlorophyta,Planctomycetes,and Verrucomicrobia.Furthermore,the performance of ICPB system was also validated through treatment of other heavy metal complexes.This study provided a feasible strategy for the decontamination of heavy metal complexes in wastewater. 展开更多
关键词 Cu complex PHOTOCATALYSIS Biological treatment Non-woven cotton fabric
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