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  • 1
    In: Journal of Economic Entomology, Oxford University Press (OUP), Vol. 114, No. 2 ( 2021-04-13), p. 979-987
    Abstract: Grain commodities in postharvest storage often deteriorate because of fungal and insect attacks. With the green consumption requirements of consumers, ecofriendly and safe pesticides are needed for grain storage. The current study investigated the efficacy of the plant volatile compound trans-2-hexenal against the storage insect pest Tribolium castaneum (Herbst) and three commonly occurring storage fungi, viz., Fusarium graminearum, Aspergillus flavus, and Aspergillus niger, to recommend its application as a botanical fumigant for grain commodities. trans-2-Hexenal weakly repels T. castaneum but has favorable insecticidal activity against multiple developmental stages of T. castaneum, ranging in sensitivity as follows: eggs (LC50 = 14.3 µl/l) & gt; adults (31.6 µl/l) & gt; young larvae (42.1 µl/l) & gt; mature larvae (64.5 µl/l) & gt; pupae (70.5 µl/l). Moreover, trans-2-hexenal caused a high malformation rate and high mortality in adults developed from fumigated pupae. In a 7-d grain, trans-2-hexenal at 0.8 µl/ml provided an appreciable efficacy (81.3%), and concentrations ≥ 0.1 µl/ml completely inhibited the offspring of T. castaneum. trans-2-Hexenal was nonphytotoxic to the seed germination and seedling growth of wheat seeds. Furthermore, trans-2-hexenal completely inhibited the growth of A. flavus, F. graminearum, and A. niger at 5, 10, and 10 µl/l, respectively. The favorable biological activity of trans-2-hexenal against T. castaneum and three frequently occurring mycotoxigenic storage fungi indicated the potential of trans-2-hexenal for simultaneously controlling pests and pathogens, which could reduce its application frequency in grains and decrease pesticide resistance risks.
    Type of Medium: Online Resource
    ISSN: 0022-0493 , 1938-291X
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2021
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  • 2
    In: Journal of Cleaner Production, Elsevier BV, Vol. 276 ( 2020-12), p. 124288-
    Type of Medium: Online Resource
    ISSN: 0959-6526
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2020
    detail.hit.zdb_id: 1179393-4
    detail.hit.zdb_id: 2029338-0
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  • 3
    Online Resource
    Online Resource
    Institute of Electrical and Electronics Engineers (IEEE) ; 2019
    In:  IEEE Transactions on Wireless Communications Vol. 18, No. 5 ( 2019-5), p. 2842-2857
    In: IEEE Transactions on Wireless Communications, Institute of Electrical and Electronics Engineers (IEEE), Vol. 18, No. 5 ( 2019-5), p. 2842-2857
    Type of Medium: Online Resource
    ISSN: 1536-1276 , 1558-2248
    Language: Unknown
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Publication Date: 2019
    detail.hit.zdb_id: 2071128-1
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  • 4
    In: Pest Management Science, Wiley, Vol. 76, No. 9 ( 2020-09), p. 3088-3095
    Abstract: The red flour beetle, Tribolium castaneum Herbst (Coleoptera: Tenebrionidae), is an important stored‐product pest that is distributed worldwide and has developed resistance to many insecticides. Identifying novel and effective alternative insecticides is important for the control of T. castaneum . The volatile compound benzothiazole has been identified as having great acute toxic activity against T. castaneum . However, a comprehensive evaluation of a new insecticide should include both direct toxic effects and sublethal effects. The aim of this study was therefore to evaluate the effects of benzothiazole on the development and reproduction of T. castaneum . RESULTS Exposure of fourth‐instar larvae to lethal and sublethal concentrations of benzothiazole (LC 10 , LC 30 and LC 50 ) significantly decreased pupation rates, food intake and growth rates in T. castaneum . Larval duration was significantly reduced by approximately 1 day in the LC 30 and LC 50 treatment groups. The LC 50 benzothiazole caused a significant decrease in the weight of pupae and adults, fecundity and egg hatchability. Increased and decreased nutrient (carbohydrate and lipid) contents were observed in surviving larvae and pupae, respectively. The LC 30 and LC 50 treatments caused the down‐regulation of five growth‐positive regulated genes ( PI3K , AKT , CyclinE , S6K1 and S6K2 ) and the up‐regulation of two growth‐negative regulated genes ( 4EBP and FOXO ). CONCLUSION Benzothiazole presented adverse effects on the development and reproduction of T. castaneum , further supporting benzothiazole as a highly active compound in stored‐product protection. © 2020 Society of Chemical Industry
    Type of Medium: Online Resource
    ISSN: 1526-498X , 1526-4998
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2003455-6
    SSG: 12
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  • 5
    Online Resource
    Online Resource
    Wiley ; 2020
    In:  Angewandte Chemie International Edition Vol. 59, No. 18 ( 2020-04-27), p. 7214-7218
    In: Angewandte Chemie International Edition, Wiley, Vol. 59, No. 18 ( 2020-04-27), p. 7214-7218
    Abstract: Reported here is a molecule‐Lego synthetic strategy for macrocycles with functional skeletons, involving one‐pot and high‐yielding condensation between bis(2,4‐dimethoxyphenyl)arene monomers and paraformaldehyde. By changing the blocks, variously functional units (naphthalene, pyrene, anthraquinone, porphyrin, etc.) can be conveniently introduced into the backbone of macrocycles. Interestingly, the macrocyclization can be tuned by the geometrical configuration of monomeric blocks. Linear (180°) monomer yield cyclic trimers and pentamers, while V‐shaped (120°, 90° and 60°) monomers tend to form dimers. More significantly, even heterogeneous macrocycles are obtained in moderate yield by co‐oligomerization of different monomers. This series of macrocycles have the potential to be prosperous in the near future.
    Type of Medium: Online Resource
    ISSN: 1433-7851 , 1521-3773
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2020
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  • 6
    Online Resource
    Online Resource
    Elsevier BV ; 2018
    In:  Applied Surface Science Vol. 459 ( 2018-11), p. 630-638
    In: Applied Surface Science, Elsevier BV, Vol. 459 ( 2018-11), p. 630-638
    Type of Medium: Online Resource
    ISSN: 0169-4332
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2018
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  • 7
    In: Materials, MDPI AG, Vol. 15, No. 20 ( 2022-10-13), p. 7106-
    Abstract: During the titanium alloy milling process, high temperatures in the tool-chip contact area will affect the tool life and precision of titanium alloy machining. Therefore, it is essential to measure the temperature of the tool-chip contact area continuously. In this paper, a finite element simulation model of the milling process was established using ABAQUS2020 to obtain the highest temperature location in the tool-chip contact area when milling titanium alloy. The integration of the wire with the alumina ceramic substrate formed an integrated wire substrate. Furthermore, NiCr, NiSi, and SiO2 films were deposited on the substrate sequentially using the DC pulsed magnetron sputtering technique. Finally, its microscopic morphology and static and dynamic performance were tested. The results show that the developed thin-film thermocouple temperature sensor has a Seebeck coefficient of 40.72 μV/°C and a dynamic response time of 0.703 ms. The application of the sensor to our titanium alloy milling experiments showed that the sensor can monitor the transient temperature in the tool-chip contact area, and its temperature measurement performance showed no detrimental effect from wearing. The effect of each milling parameter on the milling temperature was analyzed using ANOVA, and a regression model with an R-sq of 96.76% was obtained for the milling temperature.
    Type of Medium: Online Resource
    ISSN: 1996-1944
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
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  • 8
    Online Resource
    Online Resource
    Royal Society of Chemistry (RSC) ; 2020
    In:  RSC Advances Vol. 10, No. 73 ( 2020), p. 45112-45115
    In: RSC Advances, Royal Society of Chemistry (RSC), Vol. 10, No. 73 ( 2020), p. 45112-45115
    Type of Medium: Online Resource
    ISSN: 2046-2069
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2020
    detail.hit.zdb_id: 2623224-8
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  • 9
    In: Phytopathology®, Scientific Societies, Vol. 111, No. 8 ( 2021-08), p. 1313-1326
    Abstract: Benzothiazole is a microbial volatile compound with strong antifungal activity against the phytopathogenic fungus Botrytis cinerea, but its mode of action against fungi remains largely unknown. Understanding the molecular mechanisms underlying its activity could aid the design and synthesis of similar compounds against pathogenic fungi. Based on the results of morphological and antifungal activity assays, B. cinerea was exposed to 2.5 µl/liter of benzothiazole for 12, 24, and 48 h, and an isobaric tags for relative and absolute quantitation-based quantitative proteomic analysis showed that 378 out of 5,110 identified proteins were differentially expressed proteins (DEPs). The majority of these DEPs were associated with carbohydrate metabolism, oxidation reduction processes, and energy production. Further analysis showed that benzothiazole inhibited mitochondrial membrane organization and decreased the mitochondrial membrane potential of B. cinerea. In addition, the key enzymes of the glyoxylate cycle were downregulated after benzothiazole treatment, and a biochemical analysis indicated that inhibition of the glyoxylate cycle by benzothiazole blocked nutrient availability and interfered with adenosine triphosphate generation. This study provides markers for future research of the molecular responses of B. cinerea to benzothiazole stress.
    Type of Medium: Online Resource
    ISSN: 0031-949X , 1943-7684
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2021
    detail.hit.zdb_id: 2037027-1
    SSG: 12
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  • 10
    In: Plant Disease, Scientific Societies, Vol. 104, No. 8 ( 2020-08), p. 2168-2173
    Abstract: Succinate dehydrogenase inhibitor (SDHI) fungicides are currently the most frequently used fungicides for controlling gray mold. However, isolates of Botrytis cinerea resistant to SDHI fungicides have emerged in the field. Pydiflumetofen is a new SDHI fungicide that can control a variety of fungal diseases, but its efficacy against gray mold and whether the activity of pydiflumetofen is affected by the current SDHI-resistant isolates is currently unknown. The sensitivity of 291 single-spore B. cinerea isolates collected from 2017 to 2019 to pydiflumetofen was determined by spore germination inhibition assays. The mean EC 50 value (fungicide concentration resulting in a 50% inhibition compared with that of the control) of pydiflumetofen was 0.06 ± 0.01, 0.07 ± 0.02, and 0.05 ± 0.02 mg/liter in 2017, 2018, and 2019, respectively. There was no significant difference in the sensitivity of B. cinerea to pydiflumetofen among the 3 years. Furthermore, pydiflumetofen at 300 mg/liter effectively controlled gray mold on cucumber leaves (80.9%), and its efficacy was superior to that of boscalid at 400 mg/liter (42.7%). The isolates carrying P225F, N230I, H272Y, and H272R mutations in the SdhB subunit were associated with the less sensitivity of B. cinerea to SDHI fungicides. After establishing the baseline sensitivity of B. cinerea to pydiflumetofen (EC 50 of 0.03 ± 0.003 mg/liter), we found that the P225F and H272Y mutant isolates showed low to moderate levels of resistance to pydiflumetofen, and the H272R and N230I mutant isolates showed low levels of resistance. The reduced sensitivity to pydiflumetofen resulted from the positive correlation of pydiflumetofen with the other four SDHI fungicides (i.e., boscalid, fluopyram, isopyrazam, and benzovindiflupyr). These results suggest that pydiflumetofen provides effective control for the management of gray mold but must be used with caution.
    Type of Medium: Online Resource
    ISSN: 0191-2917 , 1943-7692
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2020
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