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The trivalent cerium-induced cell death and alteration of ion flux in sweetpotato [Ipomoea batatas(L.) Lam]

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Journal of Rare Earths 2017年第12期35卷 1273-1282页

作者： Jiaojiao Jiang Jianzhong Hu Zeyi Xie qinghe cao Daifu Ma Yonghua Han Zongyun Li Institute of Integrative Plant Biology School of Life Science Jiangsu Normal University Xuzhou Institution of Agricultural Science Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics Jiangsu Normal University

The rare earth element cerium（Ce） in its several forms is extensively utilized in various fields, including nano-technology, agriculture, and the food industry. Due to its increasing unregulated usage, Ce is now a potential source of pollution and toxicity due to its excessive environmental accumulation. Unfortunately, analysis of the toxic effects of Ce in plants is still in its early stages. Herein, we investigated the effects of Ce3＋ treatment on development-related indicators in sweetpotato. We found that a low concentration（10 mg/L） slightly improved oxidation resistance, while a high concentration（20-80 mg/L）negatively affected development and photosynthesis and triggered increases in reactive oxygen species（ROS） production, antioxidant enzyme activities, and malondialdehyde（MDA） content. Moreover,elevation and efflux of cytosolic Ca^（2＋） and caspase-l-like activity were induced by high-concentration Ce^（3＋） treatment. Finally, cell viability decreased as Ce3＋ concentration increased. These results suggest that（1） a high Ce3＋ concentration（20-80 mg/L） inhibits development and photosynthesis of sweetpotato and induces oxidative damage followed by lipid peroxidation in the root,（2） a caspase-l-like protease is induced by cytosolic Ca^（2＋） and ROS overproduction to cause programmed cell death in the root, and（3） a high concentration of Ce3＋ could trigger a hypothetical cell death pathway, wherein Ce3＋induces ROS production followed by cytosolic Ca^（2＋） elevation, which activates caspase-l-like activity,which in turn leads to programmed cell death in the root of sweetpotato.

关键词： Cerium ROS Caspase-1-like protease Programmed cell death Sweetpotato

Vanadium metal-organic framework-derived multifunctional fibers for asymmetric supercapacitor,piezoresistive sensor,and electrochemical water splitting

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SmartMat 2022年第4期3卷 608-618页

作者： Jie Pu Yong Gao qinghe cao Gangwen Fu Xing Chen Zhenghui Pan cao Guan Institute of Flexible Electronics Frontiers Science Center for Flexible ElectronicsNorthwestern Polytechnical UniversityXi'anChina Shaanxi Engineering Research Center for Digital Manufacturing Technology Northwestern Polytechnical UniversityXi'anChina Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore School of Materials Science and Engineering Tongji UniversityShanghaiChina

Fiber-shaped integrated devices are highly desirable for wearable and portable smart electronics,owing to their merits of lightweight,high flexibility,and ***,how to effectively employ multifunctional fibers in one integrated device that can simultaneously achieve energy storage and utilization is a major ***,a set of multifunctional fibers all derived from vanadium metal-organic framework nanowires grown on carbon nanotube fiber(V-MOF NWs@CNT fiber)is demonstrated,which can be used for various energy storage and utilization ***,a fiber-shaped asymmetric supercapacitor(FASC)is fabricated based on the CoNi-layered double hydroxide nanosheets@vanadium oxide NWs@CNT fiber(CoNi-LDH NSs@V2O5 NWs@CNT fiber)as the positive electrode and vanadium nitride(VN)NWs@CNT fiber as the negative *** from the outstanding compatibility of the functional materials,the FASC with a maximum working voltage of 1.7 V delivers a high-stack volumetric energy density of 11.27 mW·h/***,a fiber-shaped integrated device is assembled by twisting a fiber-shaped piezoresistive sensor(FPS;VN NWs@CNT fiber also served as the highly sensitive material)and a FASC together,where the highperformance FASC can provide a stable and continuous output power for the ***,the S-VOx NWs@CNT fiber(sulfur-doped vanadium oxide)electrode shows promising electrocatalytic performance for both hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),which is further constructed into a self-driven water-splitting unit with the integration of the *** present work demonstrates that the V-MOF NWs@CNTderived fibers have great potential for constructing wearable multifunctional integrated devices.

关键词： asymmetric supercapacitor electrochemical water splitting fiber-shape integrated devices multifunctional piezoresistive sensor V-MOF

Structure-Enhanced Mechanically Robust Graphite Foam with Ultrahigh MnO_(2) Loading for Supercapacitors

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Research 2020年第1期2020卷 1285-1294页

作者： qinghe cao Junjie Du Xiaowan Tang Xi Xu Longsheng Huang Dongming Cai Xu Long Xuewen Wang Jun Ding cao Guan Wei Huang Frontiers Science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi’an 710072China Department of Materials Science and Engineering National University of Singapore9 Engineering Drive 1SingaporeSingapore 117576 College of Chemical Engineering Hubei UniversityWuhan 430062China School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710072China

With the fast bloom of flexible electronics and green vehicles,it is vitally important to rationally design and facilely construct customized functional materials with excellent mechanical properties as well as high electrochemical ***,by utilizing two modern industrial techniques,digital light processing(DLP)and chemical vapor deposition(CVD),a unique 3D hollow graphite foam(HGF)is demonstrated,which shows a periodic porous structure and robust mechanical *** element analysis(FEA)results confirm that the properly designed gyroidal porous structure provides a uniform stress area and mitigates potential structural failure caused by stress concentrations.A typical HGF can show a high Young’s modulus of 3.18 MPa at a low density of 48.2 mg cm^(-3).The porous HGF is further covered by active MnO_(2) material with a high mass loading of 28.2 mg cm^(-2)(141 mg cm^(-3)),and the MnO_(2)/HGF electrode still achieves a satisfactory specific capacitance of 260 F g^(-1),corresponding to a high areal capacitance of 7.35 F cm^(-2) and a high volumetric capacitance of 36.75 F cm^(-3).Furthermore,the assembled quasi-solid-state asymmetric supercapacitor also shows remarkable mechanical properties as well as electrochemical performance.

关键词： porous capacitance utilizing

Genome-wide analysis of expression quantitative trait loci(eQTLs)reveals the regulatory architecture of gene expression variation in the storage roots of sweet potato

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Horticulture Research 2020年第1期7卷 1713-1724页

作者： Lei Zhang Yicheng Yu Tianye Shi Meng Kou Jian Sun Tao Xu Qiang Li Shaoyuan Wu qinghe cao Wenqian Hou Zongyun Li Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics School of Life SciencesJiangsu Normal UniversityXuzhou 221116 Jiangsu ProvincePeople’s Republic of China Xuzhou Academy of Agricultural Sciences/Sweet Potato Research Institute CAASXuzhou 221121 Jiangsu ProvincePeople’s Republic of China

Dissecting the genetic regulation of gene expression is critical for understanding phenotypic variation and species ***,our understanding of the transcriptional variability in sweet potato remains ***,we analyzed two publicly available datasets to explore the landscape of transcriptomic variations and its genetic basis in the storage roots of sweet *** comprehensive analysis identified a total of 724,438 high-confidence single nucleotide polymorphisms(SNPs)and 26,026 expressed *** quantitative trait locus(eQTL)analysis revealed 4408 eQTLs regulating the expression of 3646 genes,including 2261 local eQTLs and 2147 distant *** distant eQTL hotspots were found with target genes significantly enriched in specific functional *** combining the information from regulatory network analyses,eQTLs and association mapping,we found that IbMYB1-2 acts as a master regulator and is the major gene responsible for the activation of anthocyanin biosynthesis in the storage roots of sweet *** study provides the first insight into the genetic architecture of genome-wide expression variation in sweet potato and can be used to investigate the potential effects of genetic variants on key agronomic traits in sweet potato.

关键词： roots analysis sweet

Overexpression of phosphatidylserine synthase IbPSS1 affords cellular Na+homeostasis and salt tolerance by activating plasma membrane Na^(+)/H^(+)antiport activity in sweet potato roots

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Horticulture Research 2020年第1期7卷 1235-1246页

作者： Yicheng Yu Ying Xuan Xiaofeng Bian Lei Zhang Zhiyuan Pan Meng Kou qinghe cao Zhonghou Tang Qiang Li Daifu Ma Zongyun Li Jian Sun Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics School of Life SciencesJiangsu Normal University221116 XuzhouJiangsuChina Institute of Food Crops Provincial Key Laboratory of AgrobiologyJiangsu Academy of Agricultural Sciences210014 NanjingChina Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District 221131 XuzhouJiangsu

Phosphatidylserine synthase(PSS)-mediated phosphatidylserine(PS)synthesis is crucial for plant ***,little is known about the contribution of PSS to Na^(+)homeostasis regulation and salt tolerance in ***,we cloned the IbPSS1 gene,which encodes an ortholog of Arabidopsis AtPSS1,from sweet potato(Ipomoea batatas(L.)Lam.).The transient expression of IbPSS1 in Nicotiana benthamiana leaves increased PS *** then established an efficient Agrobacterium rhizogenes-mediated in vivo root transgenic system for sweet *** of IbPSS1 through this system markedly decreased cellular Na^(+)accumulation in salinized transgenic roots(TRs)compared with adventitious *** overexpression of IbPSS1 enhanced salt-induced Na^(+)/H^(+)antiport activity and increased plasma membrane(PM)Ca^(2+)-permeable channel sensitivity to NaCl and H2O2 in the *** confirmed the important role of IbPSS1 in improving salt tolerance in transgenic sweet potato lines obtained from an Agrobacterium tumefaciens-mediated transformation ***,compared with the wild-type(WT)plants,the transgenic lines presented decreased Na^(+)accumulation,enhanced Na^(+)exclusion,and increased PM Ca^(2+)-permeable channel sensitivity to NaCl and H2O2 in the *** application of lysophosphatidylserine triggered similar shifts in Na^(+)accumulation and Na^(+)and Ca^(2+)fluxes in the salinized roots of ***,this study provides an efficient and reliable transgenic method for functional genomic studies of sweet *** results revealed that IbPSS1 contributes to the salt tolerance of sweet potato by enabling Na^(+)homeostasis and Na^(+)exclusion in the roots,and the latter process is possibly controlled by PS reinforcing Ca^(2+)signaling in the roots.

关键词： roots homeostasis potato

Resequencing of sweetpotato germplasm resources reveals key loci associated with multiple agronomic traits

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Horticulture Research 2023年第1期10卷 128-139页

作者： Shizhuo Xiao Xibin Dai Lingxiao Zhao Zhilin Zhou Lukuan Zhao Pan Xu Bingqian Gao An Zhang Donglan Zhao Rui Yuan Yao Wang Jie Wang Qinglian Li qinghe cao Jiangsu Xuzhou Sweetpotato Research Center/Sweetpotato Research Institute Chinese Agricultural Academy of SciencesXuzhou 221131China College of Pastoral Agriculture Science and Technology Lanzhou UniversityLanzhou 730020China

Sweetpotato is an important crop that exhibits hexaploidy and high heterozygosity,which limits gene mining for important agronomic ***,314 sweetpotato germplasm resources were deeply resequenced,and 4599509 SNPs and 846654 InDels were generated,among which 196124 SNPs were nonsynonymous and 9690 InDels were *** on the Indels,genome-wide marker primers were designed,and 3219 of 40366 primer pairs were selected to construct the core InDel marker *** molecular ID of 104 sweetpotato samples verified the availability of these *** sweetpotato population structures were then assessed through multiple approaches using SNPs,and diverse approaches demonstrated that population stratification was not obvious for most Chinese germplasm *** many as 20 important agronomic traits were evaluated,and a genome-wide association study was conducted on these traits.A total of 19 high-confidence loci were detected in both *** loci included several candidate genes,such as IbMYB1,IbZEP1,and IbYABBY1,which might be involved in anthocyanin metabolism,carotenoid metabolism,and leaf morphogenesis,*** them,IbZEP1 and IbYABBY1 were first reported in *** variants in the promoter and the expression levels of IbZEP1 were significantly correlated with f lesh color(orange or not orange)in *** expression levels of IbYABBY1 were also correlated with leaf *** results will assist in genetic and breeding studies in sweetpotato.

关键词： germplasm breeding traits

Genome and transcriptom sequencing of a diploid sweet-potato wild progenitor Ipomoea trifida（H.B.K.） ***.

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Genome and transcriptom sequencing of a diploid sweet-potato...

油菜素内酯参与调控植物生长发育与抗逆性的机制及其育种应用研究

江苏省遗传学会2016年学术年会

作者： qinghe cao Xinxun Yang Zhangjun Fei Jun Tang Donglan Zhao Shan Gao Daifu Ma Key Laboratory of Biologyand GeneticImprovement of Sweetpotato Ministry of AgricultureP.R.China/Jiangsu Xuzhou Sweetpotato Reasearch Centre Institute of Food Crops Hubei Academy of Agricultural Sciences Boyce Thompson Institute Cornell University College of Life Sciences Nankai University

＜正＞The genome contains all the genetic information of an organism,which determines its ***-quality reference genome sequence provides a foundation that can facilitate basic researches,gene/QTL cloning,molecular marker discovery and marker-assisted *** sequences can also help understand genome evolution and domestication

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中国农业科技导报 2015年第2期17卷 25-32页

作者：李元元曹清河中国农业科学院甘薯研究所江苏徐州221131 江苏徐州甘薯研究中心江苏徐州221131

油菜素内酯(brassinosteroids,BRs)是一类重要的植物促生激素,参与调控植物生长发育。最近的研究表明,BRs能增加作物产量和增强作物抗逆性。在BRs信号转导过程中,蛋白激酶的磷酸化功能与转录因子的磷酸化和脱磷酸化过程是BRs信号重要的... 详细信息

油菜素内酯(brassinosteroids,BRs)是一类重要的植物促生激素,参与调控植物生长发育。最近的研究表明,BRs能增加作物产量和增强作物抗逆性。在BRs信号转导过程中,蛋白激酶的磷酸化功能与转录因子的磷酸化和脱磷酸化过程是BRs信号重要的生化调控机制,其中起始BRs信号由胞外向胞内转导的蛋白激酶BRI1和BAK1,以及BRs信号下游调控不同性状基因表达的转录因子BZR1和BZR2/BES1,是BRs信号途径中关键的功能基因。基于重要蛋白激酶和转录因子的蛋白结构和功能分析,通过不同氨基酸功能位点的基因定点突变和修饰技术,能实现BRs信号途径的功能研究与植物性状改良,从而提高植物对环境的适应性。综述了BRs信号途径与植物生长发育和环境胁迫的研究,期望为植物分子育种提供很好的借鉴。

关键词：油菜素内酯信号转导植物发育作物育种

Deep sequencing and de nove assembly of the diploid Ipomoea trifida(H.B.K.)*** and SSR markers development

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Deep sequencing and de nove assembly of the diploid Ipomoea ...