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| 1 | Genome-wide analysis of expression quantitative trait loci(eQTLs)reveals the regulatory architecture of gene expression variation in the storage roots of sweet potato显示文摘Dissecting the genetic regulation of gene expression is critical for understanding phenotypic variation and species evolution.However,our understanding of the transcriptional variability in sweet potato remains limited.Here,we analyzed two publicly available datasets to explore the landscape of transcriptomic variations and its genetic basis in the storage roots of sweet potato.The comprehensive analysis identified a total of 724,438 high-confidence single nucleotide polymorphisms(SNPs)and 26,026 expressed genes.Expression quantitative trait locus(eQTL)analysis revealed 4408 eQTLs regulating the expression of 3646 genes,including 2261 local eQTLs and 2147 distant eQTLs.Two distant eQTL hotspots were found with target genes significantly enriched in specific functional classifications.By 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 potato.Our 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. | Lei Zhang Yicheng Yu Tianye Shi Meng Kou Jian Sun Tao Xu Qiang Li Shaoyuan Wu Qinghe Cao Wenqian Hou Zongyun Li | 2020 | Horticulture Research2020，7，1： | 2 |
| 2 | Overexpression of phosphatidylserine synthase IbPSS1 affords cellular Na+homeostasis and salt tolerance by activating plasma membrane Na^(+)/H^(+)antiport activity in sweet potato roots显示文摘Phosphatidylserine synthase(PSS)-mediated phosphatidylserine(PS)synthesis is crucial for plant development.However,little is known about the contribution of PSS to Na^(+)homeostasis regulation and salt tolerance in plants.Here,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 abundance.We then established an efficient Agrobacterium rhizogenes-mediated in vivo root transgenic system for sweet potato.Overexpression of IbPSS1 through this system markedly decreased cellular Na^(+)accumulation in salinized transgenic roots(TRs)compared with adventitious roots.The 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 TRs.We confirmed the important role of IbPSS1 in improving salt tolerance in transgenic sweet potato lines obtained from an Agrobacterium tumefaciens-mediated transformation system.Similarly,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 roots.Exogenous application of lysophosphatidylserine triggered similar shifts in Na^(+)accumulation and Na^(+)and Ca^(2+)fluxes in the salinized roots of WT.Overall,this study provides an efficient and reliable transgenic method for functional genomic studies of sweet potato.Our 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. | Yicheng Yu Ying Xuan Xiaofeng Bian Lei Zhang Zhiyuan Pan Meng Kou Qinghe Cao Zhonghou Tang Qiang Li Daifu Ma Zongyun Li Jian Sun | 2020 | Horticulture Research2020，7，1： | 2 |
| 3 | Resequencing of sweetpotato germplasm resources reveals key loci associated with multiple agronomic traits显示文摘Sweetpotato is an important crop that exhibits hexaploidy and high heterozygosity,which limits gene mining for important agronomic traits.Here,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 frameshifted.Based on the Indels,genome-wide marker primers were designed,and 3219 of 40366 primer pairs were selected to construct the core InDel marker set.The molecular ID of 104 sweetpotato samples verified the availability of these primers.The 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 resources.As 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 models.These loci included several candidate genes,such as IbMYB1,IbZEP1,and IbYABBY1,which might be involved in anthocyanin metabolism,carotenoid metabolism,and leaf morphogenesis,respectively.Among them,IbZEP1 and IbYABBY1 were first reported in sweetpotato.The variants in the promoter and the expression levels of IbZEP1 were significantly correlated with f lesh color(orange or not orange)in sweetpotato.The expression levels of IbYABBY1 were also correlated with leaf shape.These results will assist in genetic and breeding studies in sweetpotato. | 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 | 2023 | Horticulture Research2023，10，1： | 1 |
| 4 | Structure-Enhanced Mechanically Robust Graphite Foam with Ultrahigh MnO_(2) Loading for Supercapacitors显示文摘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 performance.Herein,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 properties.Finite 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. | Qinghe Cao Junjie Du Xiaowan Tang Xi Xu Longsheng Huang Dongming Cai Xu Long Xuewen Wang Jun Ding Cao Guan Wei Huang | 2020 | Research2020，，1： | 0 |
| 5 | Breeding and Cultivation Techniques of a New Table Use Purple-fleshed Sweetpotato Cultivar,Xuzishu 2显示文摘Xuzishu 2 is a new high-quality table use purple-fleshed sweetpotato cultivar bred from hybrid progenies of AIS35-2 × Xushu 22-5 by Jiangsu Xuzhou Sweetpotato Research Center. In the sweetpotato variety regional trial of Jiangsu Province during 2007- 2008,average fresh storage root yield was 30 185. 3kg / hm2; average dry matter content was 29. 26%; average dry storage root yield was 8 868. 7 kg/hm2. In the sweetpotato variety production test of Jiangsu Province,average fresh storage root yield was 30 683. 9 kg / hm2; average dry storage root yield was 9 399. 0 kg/hm2. Multi-location sampling analysis in the regional trial indicated that the anthocyanin content in fresh storage roots was 104. 6 μg / g. Xuzishu 2 was approved by Crop Variety Approval Committee of Jiangsu Province in March 2010,which exhibited high fresh storage root yield,sweet taste,high anthocyanin content,good commodity,root rot resistance,and was tolerant to moisture and easy to store. Therefore,Xuzishu 2 is a high-quality purple-fleshed sweetpotato variety suitable for consumption and food processing,which should be cultivated in medium- and high-fertility fields with management procedures of suitable high density,early planting and early harvest. | Qiang LI Yiping XIE Xin WANG Xiuying LI Hongmin LI Daifu MA Zhonghou TANG Qinghe CAO Meng KOU Yungang ZHANG Wei TANG | 2015 | Agricultural Biotechnology2015，4，4： | 0 |
| 6 | Materials and structural design for preferable Zn deposition behavior toward stable Zn anodes显示文摘Benefiting from the high capacity of Zn metal anodes and intrinsic safety of aqueous electrolytes,rechargeable Zn ion batteries(ZIBs)show promising application in the post‐lithium‐ion period,exhibiting good safety,low cost,and high energy density.However,its commercialization still faces problems with low Coulombic efficiency and unsatisfied cycling performance due to the poor Zn/Zn2+reversibility that occurred on the Zn anode.To improve the stability of the Zn anode,optimizing the Zn deposition behavior is an efficient way,which can enhance the subsequent striping efficiency and limit the dendrite growth.The Zn deposition is a controlled kinetics‐diffusion joint process that is affected by various factors,such as the interaction between Zn2+ions and Zn anodes,ion concentration gradient,and current distribution.In this review,from an electrochemical perspective,we first overview the factors affecting the Zn deposition behavior and summarize the modification principles.Subsequently,strategies proposed for interfacial modification and 3D structural design as well as the corresponding mechanisms are summarized.Finally,the existing challenges,perspectives on further development direction,and outlook for practical applications of ZIBs are proposed. | Qinghe Cao Yong Gao Jie Pu Abdelnaby M.Elshahawy Cao Guan | 2024 | SmartMat2024，5，1： | 0 |
| 7 | Vanadium metal-organic framework-derived multifunctional fibers for asymmetric supercapacitor,piezoresistive sensor,and electrochemical water splitting显示文摘Fiber-shaped integrated devices are highly desirable for wearable and portable smart electronics,owing to their merits of lightweight,high flexibility,and wearability.However,how to effectively employ multifunctional fibers in one integrated device that can simultaneously achieve energy storage and utilization is a major challenge.Herein,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 applications.First,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 electrode.Benefiting 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/cm3.Then,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 FPS.Finally,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 FASCs.The present work demonstrates that the V-MOF NWs@CNTderived fibers have great potential for constructing wearable multifunctional integrated devices. | Jie Pu Yong Gao Qinghe Cao Gangwen Fu Xing Chen Zhenghui Pan Cao Guan | 2022 | SmartMat2022，3，4： | 0 |
| 8 | The trivalent cerium-induced cell death and alteration of ion flux in sweetpotato [Ipomoea batatas(L.) Lam]显示文摘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. | Jiaojiao Jiang Jianzhong Hu Zeyi Xie Qinghe Cao Daifu Ma Yonghua Han Zongyun Li | 2017 | Journal of Rare Earths2017，35，12： | 0 |
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