探究聚-γ-谷氨酸(γ-PGA)对直播稻抗倒伏性、产量和品质的影响,为高产优质的水稻栽培技术提供理论依据和技术参考。于2022和2023年在湖北省武穴市花桥镇开展田间试验,采用双因素裂区设计,以直播方式水直播(W)和旱直播(D)为主区,不施加...探究聚-γ-谷氨酸(γ-PGA)对直播稻抗倒伏性、产量和品质的影响,为高产优质的水稻栽培技术提供理论依据和技术参考。于2022和2023年在湖北省武穴市花桥镇开展田间试验,采用双因素裂区设计,以直播方式水直播(W)和旱直播(D)为主区,不施加γ-PGA发酵液(P0)和施加25 kg hm–2γ-PGA发酵液(P1)为副区,共4个处理,对水稻抗倒伏能力相关指标、产量、稻米品质进行测定。结果表明,施加γ-PGA能分别使水、旱直播下水稻第一基节茎粗增加10.3%~10.6%和7.5%~13.3%,第二基节茎粗增加10.5%~11.8%和8.2%~17.5%,茎秆壁厚增加23.7%~27.9%和12.5%~22.0%,抗折能力提高37.3%~52.7%和50.8%~54.5%,弯曲力矩提高3.8%~7.6%和4.1%~5.9%,折断弯矩提高37.3%~52.7%和50.8%~54.5%,倒伏指数降低21.9%~29.1%和30.2%~32.2%。施加γ-PGA能改变水稻的茎秆强度,提高产量和稻米品质。展开更多
OBJECTIVE Lychee seed,a famous traditional Chinese medicine,recently were reported to improve the learning and memory abilities in mice.However,it is still unclear whether lychee seed saponins(LSS)can improve the cogn...OBJECTIVE Lychee seed,a famous traditional Chinese medicine,recently were reported to improve the learning and memory abilities in mice.However,it is still unclear whether lychee seed saponins(LSS)can improve the cognitive function and associated mechanisms.METHODS In present studies,we established the Alzheimer disease(AD)model by injecting Aβ25-35 into the lateral ventricle of rats.Then the spatial learning and memory abilities of LSS-treated rats were evaluated with the Morris water maze,meanwhile the protein expressions of AKT,GSK3β and Tau in the hippocampal neuron were analyzed by immunohistochemistry and Western blotting.RESULTS The results showed LSS can improve the cognitive functions of AD rats through shortening the escape latency,increasing the number across the platform,platform quadrant dwell time and the percentage of the total distance run platform quadrant.The protein expression of AKT was significantly up-regulated and that of GSK3β and Tau were decreased remarkably in the hippocampal CA1 area.CONCLUSION Our study is the first to show that LSS significantly improve the cognitive function and prevent hippocampal neuronal injury of the rats with AD by activation of the PI3K/AKT/GSK3βsignaling pathway,suggesting LSS may be developed into the nutrient supplement for the treatment of AD.展开更多
Direct carbon solid oxide fuel cells(DC-SOFCs)are promising,green,and efficient power-generating devices that are fueled by solid carbons and comprise all-solid-state structures.Developing suitable anode materials for...Direct carbon solid oxide fuel cells(DC-SOFCs)are promising,green,and efficient power-generating devices that are fueled by solid carbons and comprise all-solid-state structures.Developing suitable anode materials for DC-SOFCs is a substantial scientific challenge.Herein we investigated the use of La_(0.75)Sr_(0.25)Cr_(0.5)Mn_(0.5)O_(3)-δ−Ce_(0.8)Gd_(0.2)O_(1.9)(LSCM−GDC)composite electrodes as anodes for La_(0.9)Sr_(0.1)Ga_(0.8)Mg_(0.2)O_(3)-δelectrolyte-based DC-SOFCs,with Camellia oleifera shell char as the carbon fuel.The LSCM−GDC-anode DC-SOFC delivered a maximum power density of 221 mW/cm^(2) at 800℃ and it significantly improved to 425 mW/cm^(2) after Ni nanoparticles were introduced into the LSCM−GDC anode through wet impregnation.The microstructures of the prepared anodes were characterized,and the stability of the anode in a DC-SOFC and the influence of catalytic activity on open circuit voltage were studied.The above results indicate that LSCM–GDC anode is promising to be applied in DC-SOFCs.展开更多
文摘探究聚-γ-谷氨酸(γ-PGA)对直播稻抗倒伏性、产量和品质的影响,为高产优质的水稻栽培技术提供理论依据和技术参考。于2022和2023年在湖北省武穴市花桥镇开展田间试验,采用双因素裂区设计,以直播方式水直播(W)和旱直播(D)为主区,不施加γ-PGA发酵液(P0)和施加25 kg hm–2γ-PGA发酵液(P1)为副区,共4个处理,对水稻抗倒伏能力相关指标、产量、稻米品质进行测定。结果表明,施加γ-PGA能分别使水、旱直播下水稻第一基节茎粗增加10.3%~10.6%和7.5%~13.3%,第二基节茎粗增加10.5%~11.8%和8.2%~17.5%,茎秆壁厚增加23.7%~27.9%和12.5%~22.0%,抗折能力提高37.3%~52.7%和50.8%~54.5%,弯曲力矩提高3.8%~7.6%和4.1%~5.9%,折断弯矩提高37.3%~52.7%和50.8%~54.5%,倒伏指数降低21.9%~29.1%和30.2%~32.2%。施加γ-PGA能改变水稻的茎秆强度,提高产量和稻米品质。
基金supported by Science and Technology Planning Project of Sichuan Province(2008SZ0050,14JC0798)Educational Commission of Sichuan Province(10ZA035,15ZA0155)+1 种基金Science and Technology Program of Luzhou(2015-S-43,2016LZXNYD-T03)Key Development Program of Southwest Medical University(2010ZD-010)
文摘OBJECTIVE Lychee seed,a famous traditional Chinese medicine,recently were reported to improve the learning and memory abilities in mice.However,it is still unclear whether lychee seed saponins(LSS)can improve the cognitive function and associated mechanisms.METHODS In present studies,we established the Alzheimer disease(AD)model by injecting Aβ25-35 into the lateral ventricle of rats.Then the spatial learning and memory abilities of LSS-treated rats were evaluated with the Morris water maze,meanwhile the protein expressions of AKT,GSK3β and Tau in the hippocampal neuron were analyzed by immunohistochemistry and Western blotting.RESULTS The results showed LSS can improve the cognitive functions of AD rats through shortening the escape latency,increasing the number across the platform,platform quadrant dwell time and the percentage of the total distance run platform quadrant.The protein expression of AKT was significantly up-regulated and that of GSK3β and Tau were decreased remarkably in the hippocampal CA1 area.CONCLUSION Our study is the first to show that LSS significantly improve the cognitive function and prevent hippocampal neuronal injury of the rats with AD by activation of the PI3K/AKT/GSK3βsignaling pathway,suggesting LSS may be developed into the nutrient supplement for the treatment of AD.
基金Project(2019YFC1907405)supported by the National Key R&D Program of ChinaProject(GJJ200809)supported by the Education Department Project Fund of Jiangxi Province,ChinaProject(2020BAB214021)supported by the Natural Science Foundation of Jiangxi Province,China。
文摘Direct carbon solid oxide fuel cells(DC-SOFCs)are promising,green,and efficient power-generating devices that are fueled by solid carbons and comprise all-solid-state structures.Developing suitable anode materials for DC-SOFCs is a substantial scientific challenge.Herein we investigated the use of La_(0.75)Sr_(0.25)Cr_(0.5)Mn_(0.5)O_(3)-δ−Ce_(0.8)Gd_(0.2)O_(1.9)(LSCM−GDC)composite electrodes as anodes for La_(0.9)Sr_(0.1)Ga_(0.8)Mg_(0.2)O_(3)-δelectrolyte-based DC-SOFCs,with Camellia oleifera shell char as the carbon fuel.The LSCM−GDC-anode DC-SOFC delivered a maximum power density of 221 mW/cm^(2) at 800℃ and it significantly improved to 425 mW/cm^(2) after Ni nanoparticles were introduced into the LSCM−GDC anode through wet impregnation.The microstructures of the prepared anodes were characterized,and the stability of the anode in a DC-SOFC and the influence of catalytic activity on open circuit voltage were studied.The above results indicate that LSCM–GDC anode is promising to be applied in DC-SOFCs.
