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Tomato leaf curl New Delhi virus:an emerging plant begomovirus threatening cucurbit production

aBIOTECH 2023年第3期4卷 257-266页

作者： Lingmin Cai Yuzhen Mei Ruyi Ye Yun Deng Xuejun zhang Zhongyuan Hu Xueping Zhou Mingfang ZHANG Jinghua Yang Laboratory of Germplasm Innovation and Molecular Breeding Institute of Vegetable ScienceZhejiang UniversityHangzhou 310058China Institute of Biotechnology Zhejiang UniversityHangzhou 310058China Peking University Institute of Advanced Agricultural Sciences Weifang 261000China Hami Melon Research Center Xinjiang Academy of Agricultural SciencesUrumqi 830091China Hainan Institute Zhejiang UniversityYazhou Bay Science and Technology CitySanya 572025China Key Laboratory of Horticultural Plant Growth and Development Ministry of Agriculture and Rural AffairsHangzhou 310058China

Tomato leaf curl New Delhi virus(ToLCNDV),a bipartite begomovirus,was first reported to infect tomato and has recently spread rapidly as an emerging disease to Cucurbitaceae crops.To date,the virus has been reported to infect more than 11 cucurbit crops,in 16 countries and regions,causing severe yield losses.In autumn 2022,ToLCNDV was first isolated from cucurbit plants in Southeastern coastal areas of China.Phylogenetic analysis established that these isolates belong to the Asian ToLCNDV clade,and shared high nucleotide identity and closest genetic relationship with the DNA-A sequence from the Chinese tomato-infecting ToLCNDV isolate(Accession no.OP356207)and the tomato New Delhi ToLCNDV-Severe isolate(Accession no.HM159454).In this review,we summarize the occurrence and distribution,host range,detection and diagnosis,control strategies,and genetic resistance of ToLCNDV in the Cucurbitaceae.We then summarize pathways that could be undertaken to improve our understanding of this emerging disease,with the objective to develop ToLCNDV-resistant cucurbit cultivars.

关键词： Tomato leaf curl New Delhi virus Cucurbits Emerging virus disease Genetic resistance

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Mitochondrial retrograde regulation tuning fork in nuclear genes expressions of higher plants

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Journal of Genetics and Genomics 2008年第2期35卷 65-71页

作者： Jinghua Yang Mingfang ZHANG Jingquan Yu Laboratory of Genetic Resources ＆ Functional Improvement for Horticultural Plants Department of Horticulture Zhejiang University Hangzhou 310029 China Laboratory of Horticultural Plant Growth Development ＆ Biotechnology Ministry ofAgriculture Zhejiang University Hangzhou 310029 China

In plant cells, there are three organelles： the nucleus, chloroplast, and mitochondria that store genetic information. The nucleus possesses the majority of genetic information and controls most aspects of organelles gene expression, growth, and development. In return, organelles also send signals back to regulate nuclear gene expression, a process defmed as retrograde regulation. The best studies of organelles to nucleus retrograde regulation exist in plant chloroplast-to-nuclear regulation and yeast mitochondria-to-nuclear regulation. In this review, we summarize the recent understanding of mitochondrial retrograde regulation in higher plant, which involves multiple potential signaling pathway in relation to cytoplasmic male-sterility, biotic stress, and abiotic stress. With respect to mitochondrial retrograde regulation signal pathways involved in cytoplasmic male-sterility, we consider that nuclear transcriptional factor genes are the targeted genes regulated by mitochondria to determine the abnormal reproductive development, and the MAPK signaling pathway may be involved in this regulation in Brassica juncea. When plants suffer biotic and abiotic stress, plant ceils will initiate cell death or other events directed toward recovering from stress. During this process, we propose that mitochondria may determine how plant cell responds to a given stress through retrograde regulation. Meanwhile, several transducer molecules have also been discussed here. In particular, the Paepe research group reported that leaf mitochondrial modulated whole cell redox homeostasis, set antioxidant capacity, and determined stress resistance through altered signaling and diurnal regulation, which is an indication of plant mitochondria with more active function than ever.

关键词： mitochondrial retrograde regulation cytoplasmic male sterility biotic stress abiotic stress

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Eukaryotic Translation Initiation Factors Shape RNA Viruses Resistance in Plants

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Horticultural Plant Journal 2020年第2期6卷 81-88页

作者： Jannat Shopan Xiaolong Lv Zhongyuan Hu Mingfang ZHANG Jinghua Yang Laboratory of Germplasm Innovation and Molecular Breeding Institute of Vegetable ScienceZhejiang UniversityHangzhou 310058China Key Laboratory of Horticultural Plant Growth and Development Ministry of Agriculture and Rural AffairsHangzhou 310058China

Viruses are representative of a global threat to agricultural production. Genetic resistance is the preferred strategy for the control of viral infection and against loss of crop yield. Viral protein synthesis requires host cellular factors for translating their viral RNAs, and for regulating their replication and cell to cell systemic movement. Therefore, the viruses are dependent on cellular translation factors. Mutations in the gene encoding eIF4E and eIF4G or their isoforms, eIFiso4 E, eIFiso4 G and eIF2Bβ have been mapped as a source of plant potyvirus while other genus of plant virus recessive resistance genes in many species are originated from these loci. Some of other plant translation factors, such as eIF3,eIF4 A-like helicases, eEF1A and eEF1B, which are required in interacting with viral RNAs and regulating various aspects of the infection cycle,have also been identified. Here, we summarized the mechanisms utilized by RNA viruses of eukaryotic plants and the essential roles of e IFs in virus infection. Moreover, we discussed the potential of e IFs as a target gene in the development of genetic resistance to viruses for crop improvement. This review highlighted newly revealed examples of abnormal translational strategies and provided insights into natural host resistance mechanisms that have been linked to 3 cap-independent translational enhancer activity.

关键词： eukaryotic translation initiation factor genome editing 3 cap-independent translational enhancer virus resistance

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Identification of MAM1s in Regulation of 3C Glucosinolates Accumulation in Allopolyploid Brassica juncea

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Horticultural Plant Journal 2020年第6期6卷 409-418页

作者： zhangping Li Changtong zhang Qingze Cai Yulan Zhou Zhongyuan Hu Mingfang ZHANG Jinghua Yang Laboratory of Germplasm Innovation and Molecular Breeding Institute of Vegetable ScienceZhejiang UniversityHangzhou 310058China Key Laboratory of Horticultural Plant Growth and Development Ministry of Agriculture and Rural AffairsHangzhou 310058China

Allopolyploid Brassica juncea is particularly enriched in sinigrin,a kind of 3C aliphatic glucosinolates(GSLs),giving rise to characteristic taste after picking.However,the molecular mechanism underlying 3C aliphatic GSLs biosynthesis in this species remains unknown.In this study,we genome-widely identified GSLs metabolic genes,indicating different evolutionary rate of GSLs metabolic genes between subgenomes of B.juncea.Eight methythioalkylmalate synthase(MAMs)homologs were identified from B.juncea,in which six MAM1s were located in chloroplast and the other two were not detected with any expression.Furthermore,BjMAM1-4,BjMAM1-5,and BjMAM1-6 displayed higher expression levels in leaves than other tissues.Silenced expression analysis revealed that BjMAM1-4 and BjMAM1-6 function in 3C and 4C aliphatic GSLs accumulation.The specificity of the substrate selection for the second cycle reaction is much lower than that of the first cycle,suggesting these genes may preferentially catalyze 3C aliphatic GSLs biosynthesis.Our study provides insights into the molecular mechanism underlying the accumulation of 3C aliphatic GSLs,thereby facilitating the manipulation of aliphatic GSLs content in B.juncea.

关键词： Brassica juncea Allopolyploid 3C aliphatic glucosinolates Sinigrin MAMs

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PRKCDBP Methylation is a Potential and Promising Candidate Biomarker for Non-small Cell Lung Cancer

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中国肺癌杂志 2022年第2期25卷 78-85页

作者： Jing LI Lin QI Mingfang ZHANG Caiyun YAO Jinan FENG Zhonghua ZHENG Chujia CHEN Shiwei DUAN Yuanlin QI School of Basic Medical Sciences Fujian Medical UniversityFuzhou 350122China Medical Genetics Center School of MedicineNingbo UniversityNingbo 315211China

Background and objectives:The occurrence and development of lung cancer are closely linked to epigenetic modification.Abnormal DNA methylation in the CpG island region of genes has been found in many cancers.Protein kinase C delta binding protein(PRKCDBP) is a potential tumor suppressor and its epigenetic changes are found in many human malignancies.This study investigated the possibility of PRKCDBP methylation as a potential biomarker for non-small cell lung cancer(NSCLC).Methods:We measured the methylation levels of PRKCDBP in the three groups of NSCLC tissues.Promoter activity was measured by the dual luciferase assay,with S’-aza-deoxycytidine to examine the effect of demethylation on the expression level of PRKCDBP.Results:The methylation levels of PRKCDBP in tumor tissues and 3 cm para-tumor were higher than those of distant(>10 cm)non-tumor tissues.Receiver operating characteristic(ROC) curve analysis between tumor tissues and distant non-tumor tissues showed that the area under the line(AUC) was 0.717.Dual luciferase experiment confirmed that the promoter region was able to promote gene expression.Meanwhile,in vitro methylation of the fragment(PRKCDBP;e) could significantly reduce the promoter activity of the fragment.Demethylation of 5’-aza-deoxycytidine in lung cancer cell lines A549 and H1299 showed a significant up-regulation of PRKCDBP mRNA levels.Conclusion:PRKCDBP methylation is a potential and promising candidate biomarker for non-small cell lung cancer.

关键词： Lung neoplasms PRKCDBP DNA methylation

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Ultra-high strength GNP/2024Al composite via thermomechanical treatment

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Journal of Materials Science & Technology 2022年第13期108卷 164-172页

作者： Zhong Zheng Xuexi zhang mingfang Qian Jianchao Li Muhammad Imran Lin Geng School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Mechanical Engineering Department University of Engineering&Technology TaxilaTaxila 47050Pakistan

The 5.0 vol.%GNP/2024Al composites were prepared by accumulated shear deformation combined with heat treatment,i.***.the thermomechanical treatment(TMT).The results showed that homogeneous distributed GNPs that aligned along the plastic deformation direction were obtained by six-pass drawing in the solution heat treatment state.The introducing of high-density dislocations in Al matrix by multiple drawing resulted in enhanced nucleation of precipitates and subsequent uniform growth during ageing.Consequently,ultra-strength GNP/2024Al composites,with yield and ultimate tensile strength 482 and571 MPa,respectively,were achieved.The high strength was attributed to homogeneous dispersion of undamaged GNPs,fine and dispersed precipitations and work-hardening effect.This work demonstrated that TMT could act as a feasible strategy for preparing high-performance GNP/Al composites.

关键词： Metal-matrix composites(MMCs) Graphene nano-platelets(GNPs) Interface Ultra-strength composites Thermomechanical treatment(TMT)

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Identification of Flowering Regulatory Genes in Allopolyploid Brassica juncea

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Horticultural Plant Journal 2019年第3期5卷 109-119页

作者： Ning Zhao Chang Liu Yiqing Meng Zhongyuan Hu Mingfang ZHANG Jinghua Yang Laboratory of Germplasm Innovation and Molecular Breeding Institute of Vegetable Science Zhejiang University Key laboratory of Horticultural Plant Growth Development & Quality Improvement Ministry of Agriculture

Brassica juncea is an allopolyploid originating from the interspecific hybridization between Brassica rapa and Brassica nigra, which is of multiple usage as a vegetable, oilseed and condiment worldwide. Both vernalization and non-vernalization under long-day photoperiod can promote floral transition in B. juncea suggesting merged flowering pathways of its ancestors and better environmental adaptability. We identified genomewide flowering regulatory genes in B. juncea, which include 84 and 79 genes from A and B sub-genomes, respectively. Ka/Ks analysis revealed a purification effect on both photoperiod and vernalization flowering regulation pathways during evolution. Expression profile of those genes during long-day and vernalization treatments suggested Bju ACO4, Bju AFT1, Bju BFT4, Bju ASOC1 and Bju ASOC4 may be the major functional copies of B. juncea flowering regulation. Further functional studies about Bju COs showed three days delayed flowering time in Bju ACO4 or Bju BCO3 silenced plants. Increased transcription of all BjuFLCs in Bju ACO4 or Bju BCO3 silenced plants suggested interactions between photoperiod and vernalization pathways governing flowering time. Our findings provided flowering regulating networks in allopolyploid B. juncea.

关键词： Brassica juncea Allopolyploidy Flower Vernalization Photoperiod

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RELATION BETWEEN WIENER NUMBERS OF QUASI-HEXAGONAL CHAINS AND QUASI-POLYOMINO CHAINS

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Journal of Systems Science & Complexity 2010年第4期23卷 873-882页

作者： mingfang XIE Fuji zhang College of Jinshan Fujian Agriculture and Forestry University Fuzhou 350002 China Fuji zhang Institute of Mathematics Xiamen University Xiamen 361005 China

Let Q_n and B_n denote a quasi-polyomino chain with n squares and a quasi-hexagonalchain with n hexagons,respectively.In this paper,the authors establish a relation between the Wienernumbers of Q_n and B_n:W(Q_n)=1/4[W(B_n)-8/3n^3+(14)/3n+3].And the extremal quasi-polyominochains with respect to the Wiener number are determined.Furthermore,several classes of polyominochains with large Wiener numbers are ordered.

关键词：六角链维纳六边形维也纳冰片

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Solvent-dependence of KI Mediated Electrosynthesis of Imidazo[1,2-a]pyridines

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Chemical Research in Chinese Universities 2023年第2期39卷 318-324页

作者： YI Yangjie XU Leitao LIU Yuyang LI mingfang zhang Lijuan YE Jiao HU Aixi College of Chemistry and Chemical Engineering Hunan UniversityChangsha410082P.R.China

Iodized salts are widely used as mediators to promote C-H functionalization.Solvents and additives have been described as significant roles in these reactions.However,the further electrochemical investigations have rarely been reported.Herein,a KI mediated electrochemical annulation between acetophenones and 2-amniopyridines was developed.We revealed the effect of acids and solvents by cyclic voltammetry(CV),differential pulse voltammetry(DPV),and square wave voltammetry(SWV).The oxidation of 2-aminopyridine is inhibited at the potential window with the addition of strong acids,and the lowest oxidation potential difference of KI was obtained by utilizing EtOH as solvent.The experimental studies also show that the mixture solvent of EtOH/DMSO(9/1,volume ratio)facilitates the electrochemical cyclization due to the solubility improvement of KI.CF3SO3H has been screened as the optimal acid.A range of Imidazo[1,2-a]-pyridines have been synthesized in yields of 42%to 96%.Electrochemical investigations present that the KI mediated electrochemical reaction is probably solvent-dependence.

关键词： Electrochemical annulation Electrochemical behavior Solvent Strong acid KI

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MXene-enhanced environmentally stable organohydrogel ionic diode toward harvesting ultralow-frequency mechanical energy and moisture energy

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SusMat 2023年第6期3卷 859-876页

作者： Jianyu Yin Nishuang Liu Peixue Jia Ziqi Ren Qixiang zhang Wenzhong Lu Qianqian Yao mingfang Deng Yihua Gao School of Physics&Wuhan National Laboratory for Optoelectronics(WNLO) Huazhong University of Science and Technology(HUST)WuhanChina

With the accelerating advancement of distributed sensors and portable electronic devices in the era of big data,harvesting energy from the surrounding environment to power electrical devices has become increasingly attractive.However,most mechanical energy harvesters often require high operating frequencies to function properly.Moreover,for practical applications,the survivability of devices in harsh operating environments is a vital issuewhich must be addressed.Besides,the single-stimulus responsiveness limits their further applications in complex external environments.Here,a pressure and moisture dual-responsive ionic diode consisting of two organohydrogels with opposite charges as an energy harvester is proposed.The organohydrogel ionic diode utilizes the migration of cations and anions to form the depletion zone and followed by an enhancement of the built-in potential along the depletion zone as a result of mechanical stress or humidity,converting ultralow-frequency mechanical energy or moisture energy into electrical energy.Meanwhile,this mechanism is further confirmed by the finite element analysis.With the increased rectification ratio due to the introduction of MXene,the ionic diode exhibits a relatively large output current(∼10.10μA cm^(−2))and power density(∼0.10μW cm^(−2))at a mechanical pressure of 0.01 Hz,outperforming most currently available mechanical energy harvesters.More impressively,the incorporation of ethylene glycol provides the hydrogel ionic diode with excellent temperature tolerance and long-term environmental stability.The organohydrogel ionic diode can also be applied as a moisture-driven power generator and self-powered humidity sensor.This study presents promising prospects for the efficient collection of renewable and sustainable energy and the practical application of hydrogel-based energy harvesters in extreme environments.

关键词： energy harvesting environmentally stable ionic diode organohydrogel ultralow frequency

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