Li Xiu-Hua, Su Wen-Hua, Zhou Hong, Zhang Guang-Fei
Institute of Ecology and Geobotany, Yunnan University, Kunming, China.
Ying Yong Sheng Tai Xue Bao. 2009 Aug;20(8):1852-6.
With medicinal plant Erigeron breviscapus as test material, its biomass and the contents and yields of scutellarin and caffeate were monitored under doubled (800 +/- 100) micromol x mol(-1) and natural (400 +/- 25) micromol x mol(-1) CO2 concentration. Comparing with those under natural CO2 concentration, the biomass of E. breviscapus under doubled CO2 concentration increased by 22%, the contents of scutellarin and caffeate increased by 23% and 26%, and the yields of these two constituents increased by 37.6% and 45.3%, respectively. Different organs had different responses in their biomass and active constituent contents to the elevated CO2 concentration. Under doubled CO2 concentration, the plant N content decreased by 47.2% and was negatively correlated with active constituent contents, being accorded well to the C/N balance hypothesis, and the biomass was positively correlated with the active constituent contents while no trade-off was observed between plant growth and secondary metabolism, suggesting that rational application of CO2 could improve the yield and quality of E. breviscapus.
以药用植物灯盏花为试验材料，在二氧化碳浓度倍增（800±100）μmol·mol⁻¹和自然（400±25）μmol·mol⁻¹条件下，监测其生物量以及灯盏乙素和咖啡酸的含量与产量。与自然二氧化碳浓度条件下相比，二氧化碳浓度倍增时灯盏花的生物量增加了22%，灯盏乙素和咖啡酸的含量分别增加了23%和26%，这两种成分的产量分别增加了37.6%和45.3%。不同器官的生物量和活性成分含量对升高的二氧化碳浓度有不同响应。在二氧化碳浓度倍增条件下，植株氮含量降低了47.2%，且与活性成分含量呈负相关，这与碳氮平衡假说相符，生物量与活性成分含量呈正相关，且未观察到植物生长与次生代谢之间的权衡，表明合理施用二氧化碳可提高灯盏花的产量和品质。
