首页|模拟CO2浓度升高对滇重楼光合作用及有效成分的影响

模拟CO2浓度升高对滇重楼光合作用及有效成分的影响

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目的 探讨药用植物滇重楼对CO2浓度升高的生理响应，以期为未来大气CO2浓度升高环境下滇重楼的栽培提供理论指导。方法 以1年生滇重楼为材料，使用步入式人工气候室模拟大气CO2浓度升高条件，分别设置CO2浓度为400μmol·mol-1和800 μmol·mol-1，探究CO2浓度升高条件下滇重楼生理生化指标及有效成分含量变化。结果 不同CO2浓度下滇重楼生理生化参数具有较大差异:(1)CO2浓度增加显著促进了滇重楼皂苷含量的积累，其中重楼皂苷Ⅶ和H分别较低CO2浓度下增加了 14。16％和17。98％;(2)CO2浓度升高了滇重楼的净光合速率、气孔导度、水分利用率、非光化学效率和电子传递速率，降低了 Ci/Ca;(3)高CO2浓度可以增加滇重楼的可溶性糖含量和脯氨酸含量。结论 短期CO2浓度升高促进了滇重楼的光合作用及皂苷积累，因此推测在未来大气CO2浓度升高的环境下，有助于提高滇重楼的药材质量和临床疗效。
Effects of elevated CO2 concentration on photosynthesis and active ingredients of Paris polyphylla Smith var.yunnanensis
Objective Exploring the physiological response of medicinal plant Paris polyphylla Smith var.yunnanensis(Franch.)Hand.-Mazz.to elevated CO2 concentration,in order to provide theoretical guidance for the cultivation of P.polyphylla in future environments with elevated atmospheric CO2 concentration.Methods The one-year old P.polyphylla was used to simulate the rising conditions of atmospheric CO2 concentration with a walk-in climatron.The CO2 concentrations were set at 400 μmol· mol-1 and 800 μmol·mol-1,respectively,to explore the changes of physiological and biochemical indicators and Active ingredi-ent content of P.polyphylla under the rising conditions of CO2 concentration.Results The physiological and biochemical parame-ters of P.polyphylla at different CO2 concentrations had large differences:(1)The increase in CO2 concentration significantly promoted the accumulation of polyphyllins content,in which polyphyllin Ⅶ and H increased by 14.16％and 17.98％,respec-tively,compared with those at low CO2 concentration;(2)Elevated CO2 concentration advanced net photosynthetic rate,stomatal conductance,water utilization,non-photochemical efficiency and electron transfer rate,and decreased Ci/Ca in P.polyphylla;(3)High CO2 concentration can increase the soluble sugar content and proline content of P.polyphylla.Conclusion The short-term CO2 concentration increase promoted the photosynthesis and polyphyllins accumulation of P.polyphylla,therefore,it is spec-ulated that it will help to improve the herb quality and clinical efficacy of P.polyphylla under the future environment of elevated atmospheric CO2 concentration.

Paris polyphylla Smith var.yunnanensis(Franch.)Hand.-Mazz.CO2 concentrationPhotosyntheticChlorophyll fluorescenceActive ingredients

米琪、罗文秀、徐萍、陆尤、于梦雯、涂振华、郑国伟、陈佳

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云南中医药大学中药学院,云南昆明 650500

云南中医药大学民族医药学院,云南昆明 650500

滇重楼 CO2浓度 光合作用 叶绿素荧光 有效成分

国家自然科学基金地区科学基金国家自然科学基金地区科学基金云南省科技厅中医联合重点项目云南省科技厅中医联合面上项目云南省万人计划青年拔尖人才项目云南省万人计划青年拔尖人才项目

8216071882060691202101AZ070001-163202001AZ070001-047YNWR-QNBJ-2020-257YNWR-QNBJ-2020-289

2024

10.3969/j.issn.1008-0805.2024.01.48

时珍国医国药
时珍国医国药杂志社

时珍国医国药

北大核心
影响因子：0.887
ISSN：1008-0805
年,卷(期)：2024.35(1)
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