State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control

China

State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control

China
SEARCH FILTERS
Time filter
Source Type

Liu Z.,Zhejiang Academy of Agricultural Sciences | Liu Z.,Hainan University | Qi P.,Zhejiang Academy of Agricultural Sciences | Qi P.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | And 19 more authors.
Food Chemistry | Year: 2017

A facile, rapid sample pretreatment method was developed based on magnetic nanoparticles for multi-pesticides residue analysis of grains. Magnetite (Fe3O4) nanoparticles modified with 3-(N,N-diethylamino)propyltrimethoxysilane (Fe3O4-PSA) and commercial C18 were selected as the cleanup adsorbents to remove the target interferences of the matrix, such as fatty acids and non-polar compounds. Rice was used as the representative grain sample for method optimization. The amount of Fe3O4-PSA and C18 were systematically investigated for selecting the suitable purification conditions, and the simultaneous determination of 50 pesticides and 8 related metabolites in rice was established by liquid chromatography–tandem mass spectrometry. Under the optimal conditions, the method validation was performed including linearity, sensitivity, matrix effect, recovery and precision, which all satisfy the requirement for pesticides residue analysis. Compared to the conventional QuEChERS method with non-magnetic material as cleanup adsorbent, the present method can save 30% of the pretreatment time, giving the high throughput analysis possible. © 2017 Elsevier Ltd


Chen X.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Chen X.,Zhejiang University | Chen X.,Zhejiang Normal University | Dong Y.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | And 7 more authors.
PLoS ONE | Year: 2016

Oryza meyeriana, a wild species of rice from China, shows high resistance to Xanthomonas oryzae pv. oryzae (Xoo), the cause of rice bacterial blight, one of the most serious rice pathogens. To better understand the resistance mechanism, a proteomic study was conducted to identify changes in the proteins secreted in embryo cell suspension cultures in response to Xoo. After two-dimensional difference gel electrophoresis (2D-DIGE), 72 differentially expressed protein spots corresponding to 34 proteins were identified by Matrix-Assisted Laser Desorption/ Ionization Time of Flight Mass Spectrometry. Of the 34 proteins, 10 were up regulated and 24 down regulated. The secreted proteins identified were predicted to be involved in various biological processes, including signal transduction, defense, ROS and cell wall modification. 77% of the 34 proteins were predicted to have a signal peptide by Signal P. Quantitative Real-Time PCR showed that transcript levels of 14 secreted proteins were not well correlated with secreted protein levels. Peroxidase activity was up regulated in both O. meyriana and susceptible rice but was about three times higher in O. meyeriana. This suggests that peroxidases may play an important role in the early response to Xoo in O. meyeriana. These results not only provide a better understanding of the resistance mechanism of O. meyeriana, but have implications for studies of the interactions between other plants and their pathogens. © 2016 Chen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Qi P.,Zhejiang Academy of Agricultural Sciences | Qi P.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Wang X.,Zhejiang Academy of Agricultural Sciences | Wang X.,Agricultural Ministry Key Laboratory for Pesticide Residue Detection | And 8 more authors.
Journal of Separation Science | Year: 2014

The computer-assisted design and synthesis of molecularly imprinted polymers for the simultaneous capture of six carbamate pesticides from environmental water are reported in this work. The quantum mechanical computational approach was employed to design the molecularly imprinted polymers with carbofuran as template. The interaction energies between the template molecule and different functionalmonomers in various solvents were calculated to assist in the selection of the functional monomer and porogen. The optimised molecularly imprinted polymer was subsequently used as a class-selective sorbent in solid-phase extraction for pre-concentration and determination of carbamates from environmental water. The parameters influencing the extraction efficiency of the molecularly imprinted solid-phase extraction procedure were systematically investigated to facilitate the class-selective extraction. For the proposed method, linearity was observed over the range of 2-500 ng/mL with the correlation coefficient ranging from 0.9760 to 1.000. The limits of detection ranged from 0.2 to 1.2 ng/mL, and the limit of quantification was 4 ng/mL. These results confirm that computer-assisted design is an effective evaluation tool for molecularly imprinted polymers synthesis, and thatmolecularly imprinted solid-phase extraction can be applied to the simultaneous analysis of carbamates in environmental water. © 2014 Wiley-VCH Verlag GmbH & Co. KGaA.


Qi P.,Zhejiang Academy of Agricultural Sciences | Qi P.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Wang Z.,Zhejiang Academy of Agricultural Sciences | Wang Z.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | And 12 more authors.
Microchimica Acta | Year: 2015

The authors describe magnetite (Fe3O4) nanoparticles modified with 3-(N,N-diethylamino) propyltrimethoxysilane (Fe3O4-PSA NPs) for use as a sorbent for dispersive solid phase extraction of pesticide residues. The Fe3O4-PSA NPs were prepared by silanizing Fe3O4 NPs and modifying them with 3-(N,N-diethylamino) propyltrimethoxysilane. Field-emission scanning electron microscopy, FTIR and zeta potential measurements were employed to characterize the modified NPs. They were then used as an adsorbent to remove acidic interferences (such as malic acid and succinic acid), which are major interferences in LC-MS/MS analysis in causing ion suppression in the MS spectra of pesticides. In addition, graphitized carbon black (GCB) was used as an adsorbent to eliminate interferences by pigments. The use of Fe3O4-PSA NPs can replace time-consuming centrifugation as used in the so-called QuEChERS (quick, easy, cheap, effective, rugged and safe) method. This improvement is particularly significant in high-throughput analysis. Following the optimization of the quantities of Fe3O4-PSA NPs and GCB, the method was applied to the determination of 56 pesticides in (spiked) fruits (apple, kiwi, orange and pear) by ultra-HPLC-MS/MS. The analytical ranges typically extend from 1 to 200 ng∙mL−1, and recoveries range from 60.2 to 130 % at different concentrations of all four kinds of fruits. The LOQs for the pesticides are 10 ng∙kg−1, which makes the method a viable tool for pesticide monitoring in fruits. [Figure not available: see fulltext.] © 2015, Springer-Verlag Wien.


Qi P.,Zhejiang Academy of Agricultural Sciences | Qi P.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Qi P.,Agricultural Ministry Key Laboratory for Pesticide Residue Detection | Qi P.,Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang | And 16 more authors.
Food Analytical Methods | Year: 2014

The enantioseparation and determination of isocarbophos enantiomers in orange pulp, peel, and kumquat by chiral HPLC tandem mass spectrometry (HPLC-MS/MS) are presented. Four cellulose-based chiral columns and two amylose-based columns were employed to explore the influence of chiral stationary phase on the enantioseparation selectivity and elution order of isocarbophos enantiomers. The fastest baseline enantioseparation of isocarbophos was achieved on amylose tris(3,5-dimethylphenylcarbamate) (Chiralpak AD-3R) with acetonitrile and water (containing 2 mmol L−1 ammonium formate and 0.1 % formic acid) (60:40, v/v) as mobile phase. The influence of temperature on enantioseparation of isocarbophos was investigated, indicating that the enantioseparation of isocarbophos on Chiralpak AD-3R columns was an enthalpy-driven separation. The method performance including linearity, sensitivity, matrix effect, and precision was evaluated. Under the optimized conditions, the recoveries of the isocarbophos enantiomers in orange pulp, peel, and kumquat were 76.1–95.4 % with RSD lower than 11.1 % at 5, 50, and 250 μg kg−1 levels. The limits of detection ranged from 0.2 to 0.5 μg kg−1 for enantiomers in orange pulp, peel, and kumquat. Application of the proposed method to the real sample analysis suggested its potential use in the enantioselective determination of isocarbophos in food samples. © 2014, Springer Science+Business Media New York.


Chen Z.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Chen Z.,Guizhou University | Guo Q.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Guo Q.,Guizhou University | And 8 more authors.
VirusDisease | Year: 2014

The co-infection of rice caused by southern rice black-streaked dwarf virus (SRBSDV) and rice ragged stunt virus (RRSV) was widely found at many regions, such as Yunnan Province, China, and North and Central Vietnam. These rice viral diseases lead to seriously yield loss of rice. In this study, the proteomics technology of shotgun and label free combined with multiple reaction monitoring (MRM) was developed to detect rice sample of a single or/and co-infection. The shotgun assay indicated that some proteins coded by SRBSDV and RRSV were detected via the mode of in-gel digestion, except for P5-2, P7-2 and P9-2 of SRBSDV and P4b, P5, P6, P8a and P8b of RRSV. The technology of label free combined with MRM indicated that P2, P5-1, P4, P8, P7-1, P6, P9-1 and P10 of SRBSDV and P1, P3 and P9 of RRSV were higher abundance in rice plant, and P5-2, P7-2 and P9-2 of SRBSDV and P4b and P5 of RRSV were lower abundance in viruliferous-rice plant. So SRBSDV P9-1 and RRSV P3 was selected as marker molecule to be used in detection technology, and the label free combined with MRM technology was established to detect two kinds of rice virus. © 2014, Indian Virological Society.


PubMed | Guizhou University and State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control
Type: Journal Article | Journal: Virusdisease | Year: 2015

The co-infection of rice caused by southern rice black-streaked dwarf virus (SRBSDV) and rice ragged stunt virus (RRSV) was widely found at many regions, such as Yunnan Province, China, and North and Central Vietnam. These rice viral diseases lead to seriously yield loss of rice. In this study, the proteomics technology of shotgun and label free combined with multiple reaction monitoring (MRM) was developed to detect rice sample of a single or/and co-infection. The shotgun assay indicated that some proteins coded by SRBSDV and RRSV were detected via the mode of in-gel digestion, except for P5-2, P7-2 and P9-2 of SRBSDV and P4b, P5, P6, P8a and P8b of RRSV. The technology of label free combined with MRM indicated that P2, P5-1, P4, P8, P7-1, P6, P9-1 and P10 of SRBSDV and P1, P3 and P9 of RRSV were higher abundance in rice plant, and P5-2, P7-2 and P9-2 of SRBSDV and P4b and P5 of RRSV were lower abundance in viruliferous-rice plant. So SRBSDV P9-1 and RRSV P3 was selected as marker molecule to be used in detection technology, and the label free combined with MRM technology was established to detect two kinds of rice virus.


Xue J.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Xue J.,Hunan Agricultural University | Li J.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Zhang H.-M.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | And 5 more authors.
Journal of Phytopathology | Year: 2014

Southern rice black-streaked dwarf virus (SRBSDV) is a novel putative member of the genus Fijivirus, family Reoviridae. We report here the genomic sequences of a Vietnamese isolate (SRBSDV-V). The total genome of SRBSDV-V has 29 115 nucleotides (nt), nine nt shorter than SRBSDV-GD or -HN, but similar in organization to these two Chinese isolates. Nucleotide diversities among SRBSDV isolates were much lower than those among the corresponding ORFs of the available RBSDV isolates and there was a lower purifying selection pressure on SRBSDV than RBSDV, providing first molecular evidence for the view that SRBSDV is of recent origin. In studies of all available SRBSDV sequences, there was no obvious correlation between geographic distances and phylogenetic distribution. A high frequency of genetic recombination was found among both Chinese and Vietnam SRBSDV isolates, suggesting that recombination may play an important role in the molecular variation and evolution of SRBSDV. © 2013 Blackwell Verlag GmbH.


Zhang H.-M.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Zhang H.-M.,Zhejiang Academy of Agricultural Sciences | Wang H.-D.,Zhejiang Provincial Station of Plant Protection and Quarantine | Yang J.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | And 4 more authors.
Rice Science | Year: 2013

The major viral diseases that occur on rice plants in Zhejiang Province, eastern China, are stripe and rice black-streaked dwarf diseases. Rice stripe disease is only caused by rice stripe tenuivirus (RSV), while rice black-streaked dwarf disease can be caused by rice black-streaked dwarf fijivirus (RBSDV) and/or southern rice black-streaked dwarf fijivirus (SRBSDV). Here we review the characterization of these viruses, methods for their detection, and extensive surveys showing their occurrence and spread in the province. © 2013 China National Rice Research Institute.


Xie L.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Lv M.-F.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Zhang H.-M.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | Yang J.,State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control | And 2 more authors.
Journal of Experimental Botany | Year: 2014

Structural studies showed that tumours induced by Southern rice black-streaked dwarf virus (SRBSDV; genus Fijivirus, family Reoviridae) were highly organized, modified phloem, composed of sclerenchyma, vessels, hyperplastic phloem parenchyma and sieve elements (SEs). Only parenchyma and SEs were invaded by the virus. There was a special region that consisted exclusively of SEs without the usual companion cells and a new flexible type of intercellular gateway was observed on all SE-SE interfaces in this region. These flexible gateways significantly increased the intercellular contacts and thus enhanced potential symplastic transport in the tumour. Flexible gateways were structurally similar to compressed plasmodesmata but were able to accommodate complete SRBSDV virions (~80 nm diameter). Virions were also found in sieve-pore gateways, providing strong evidence for the movement of a virus with large virions within phloem tissue and suggesting that the unusual neovascularization of plant virus-induced tumours facilitated virus spread. A working model for the spread of tumour-inducing reoviruses in plants is presented. © The Author 2014. Published by Oxford University Press on behalf of the Society for Experimental Biology.

Loading State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control collaborators
Loading State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control collaborators