[Objective] The paper was to study the effect of low temperature stress on physiological and biochemical characteristics of Podocarpus nagi. [Method] Through the determination of physiological indices such as plasma m...[Objective] The paper was to study the effect of low temperature stress on physiological and biochemical characteristics of Podocarpus nagi. [Method] Through the determination of physiological indices such as plasma membrane permeability, free proline content, soluble sugar content, malondialdehyde （MDA） content and chlorophyll content, the change law of these indices of P. nagi seedlings under natural conditions and artificially controlled low temperature conditions within the continuous 5 d was studied. [Result] The soluble sugar content, free proline content, MDA content and plasma membrane permeability of P. nagi seedlings were slightly in- creased compared with control; the chlorophyll content gradually decreased with the prolongation of low temperature stress. P. nagi seedlings produced active response to low temperature stress, so the low temperature injury P. nagi seedlings suffered was reduced. [Conclusion] The study provided theoretical basis for winter management in P. nagi cultivation in Hanjiang plain area.展开更多
Two new cyclopeptides, nagitides A and B, were isolated from the stem bark ofPodoearpus nagi. Their struc- tures were elucidated on the basis of NMR experiments including IH-IH COSY, HSQC, HMBC, ROESY, etc. This is th...Two new cyclopeptides, nagitides A and B, were isolated from the stem bark ofPodoearpus nagi. Their struc- tures were elucidated on the basis of NMR experiments including IH-IH COSY, HSQC, HMBC, ROESY, etc. This is the first report of cyclopeptides separated from this plant.展开更多
第43届分析和采样方法法典委员会(Codex Committee on Methods of Analysis and Sampling,CCMAS)于2024年5月14~18日在匈牙利布达佩斯召开,会议由匈牙利食品链安全办公室(National Food Chain Safety Office,NFCSO)主任Attila Nagy博士...第43届分析和采样方法法典委员会(Codex Committee on Methods of Analysis and Sampling,CCMAS)于2024年5月14~18日在匈牙利布达佩斯召开,会议由匈牙利食品链安全办公室(National Food Chain Safety Office,NFCSO)主任Attila Nagy博士主持,数字食品研究所(Digital Food Institute)食品链数据科学家Zsuzsa Farkas博士担任副主席。出席会议的有54个成员国、1个成员国组织以及14个观察员组织。由国家食品安全风险评估中心、农业农村部农药检定所、农业农村部农产品质量安全中心、中国农业科学院作物科学研究所、湖北省农业科学院农业质量标准与检测技术研究所的7名专家组成的中国代表团参加了会议。展开更多
基金Supported by Doctoral Starting Fund of Yangtze University(801190010105)~~
文摘[Objective] The paper was to study the effect of low temperature stress on physiological and biochemical characteristics of Podocarpus nagi. [Method] Through the determination of physiological indices such as plasma membrane permeability, free proline content, soluble sugar content, malondialdehyde （MDA） content and chlorophyll content, the change law of these indices of P. nagi seedlings under natural conditions and artificially controlled low temperature conditions within the continuous 5 d was studied. [Result] The soluble sugar content, free proline content, MDA content and plasma membrane permeability of P. nagi seedlings were slightly in- creased compared with control; the chlorophyll content gradually decreased with the prolongation of low temperature stress. P. nagi seedlings produced active response to low temperature stress, so the low temperature injury P. nagi seedlings suffered was reduced. [Conclusion] The study provided theoretical basis for winter management in P. nagi cultivation in Hanjiang plain area.
文摘Two new cyclopeptides, nagitides A and B, were isolated from the stem bark ofPodoearpus nagi. Their struc- tures were elucidated on the basis of NMR experiments including IH-IH COSY, HSQC, HMBC, ROESY, etc. This is the first report of cyclopeptides separated from this plant.
