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| 1 | Antidepressant-like effect of active fraction of Polyrhachisvicina Roger in a rat depression model显示文摘OBJECTIVE: To investigate the antidepressant-likeeffect of active fraction of Polyrhachis vicina Roger(AFPR) in a rat depression model, and to elucidate the underlying mechanism.METHODS: AFPR was extracted with ethanol followed by petroleum ether. Its antidepressant-like effect was investigated in mice by tail suspension test(TST), forced swimming test(FST) and open field test(OPT). A repeated dose of reserpine(0.5 mg/kg, daily for 14 d) was used to establish a rat depression model. Fluoxetine was used as positive control agent. The effect of AFPR on reserpine-induced ptosis, hypothermia and akinesia, the levels of monoamines and their metabolites, and the activity of monoamine oxidase(MAO) in hippocampus and prefrontal cortex were determined.RESULTS: Administration of AFPR by gavage at 160 and 320 mg/kg significantly reduced the duration of immobility in the FST and TST, and did not affect locomotor activity in the OPT. In the reserpine-induced depression model, AFPR attenuated anhedonia, demonstrated by reversing hypothermia, akinesia and sucrose consumption. AFPR significantly increased the concentration of monoamines, including dopamine, serotonin, noradrenaline and acetylcholine.CONCLUSION: AFPR normalized the metabolism rates of noradrenaline, serotonin and dopamine,and the activity of MAO, which were altered by chronic reserpine exposure. The findings suggest that modulation of the monoaminergic neurotransmitter system likely underlies the antidepressant-like effect of AFPR. | Wei Guining Chu Shifeng Su Qibiao Su Hua Lin Meiyu He Fei Lu Wenjie Lu Guoshou Huang Zhoufeng Tan Xiao Lin Xiao Zeng Xianbiao Wei Baowei Chen Naihong | 2018 | Journal of Traditional Chinese Medicine2018，38，1： | 4 |
| 2 | Research on Chemical Prevention and Control against Stem Base Rot of Sweet Potato显示文摘[Objective]The paper was to effectively control stem base rot of sweet potato.[Method]Chemical prevention and control test against stem base rot of sweet potato were conducted for consecutive three years from 2016 to 2018.[Result]The use of carbendazim or carbendazim+mancozeb,and carbendazim+embamycin had significant control effect on stem base rot of sweet potato.However,the applied concentration should be higher than the recommended concentration.Especially the concentration of 50%carbendazim WP should be no more than 300 times,and the prevention and control effect of 100 times dilution would be better.[Conclusion]The types and concentrations of prevention and control agents are determined in the test,which will provide certain basis for chemical prevention and control against stem base rot of sweet potato. | Liu Yenan Liu Weiming He Xianbiao Huang Lifei | 2021 | Plant Diseases and Pests2021，12，1： | 0 |
| 3 | Field Trapping Technology of Sex Attractants against Major Pests of Broccoli显示文摘[Objective]The paper was to explore the comprehensive sexual attraction control technology of main pests in broccoli,and to improve the green control technology of main pests in broccoli.[Method]The comprehensive control technology of sex attractants against major pests in broccoli was studied by using special sex attractants,lures and traps.[Result]The mixed quantities of Spodoptera litura,Spodoptera exigua and Plutella xylostella were fluctuated in a'W'shape in broccoli growing season in coastal area of Taizhou,central Zhejiang province,including seedling growth period(July to August),rosette and bud growth period(late September to early November),late harvest period of late-ripening broccoli(after early march).S.exigua and S.litura occurred severely at seedling stage;S.litura,S.exigua and P.xylostella occurred simultaneously at rosette and bud growth period;P.xylostella damaged florets of lateral branches in late harvest period.The trapping effects of combination A and E against S.litura,S.exigua and P.xylostella were the best;more than 1260 individuals of S.litura,S.exigua and P.xylostella were daily trapped per hectare,and the occurrence and damage of the three insect pests could be basically controlled.With the sex attract produced in Ningbo as an example,the combination of S.litura S type∶S.exigua S type∶P.xylostella blue type=1∶1∶4 distributed in five stars of clubs(space 10-20 cm)showed good comprehensive trapping effect in large area demonstration;traps were hung at the height of 0.5 m(0.2 m for P.xylostella),and lures were replaced once every 30-40 d.[Conclusion]Using special sex attractants,the comprehensive effects on S.litura,S.exigua and P.xylostella were determined at rosette and bud growth period of broccoli through combination modes,and supporting application technology were put forward,making great progress in exploring and improving sex attractant combination against insect pests. | Liu Weiming Wang Enguo Liu Yenan He Xianbiao | 2020 | Plant Diseases and Pests2020，11，1： | 0 |
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