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- Title
Effects of doubled CO<sub>2</sub> concentration on Erigeron breviscapus growth and its active constituent accumulation.
- Authors
Li Xiu-hua; Su Wen-hua; Zhou Hong; Zhang Guang-fei
- Abstract
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) μmol × mol-1 and natural (400 ± 25) μmol × 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.
- Subjects
CARBON dioxide adsorption; ERIGERON; MEDICINAL plants; PLANT growth; FLAVONOIDS; BIOMASS; PLANT monitoring; HYPOTHESIS; PLANT metabolism
- Publication
Yingyong Shengtai Xuebao, 2009, Vol 20, Issue 8, p1852
- ISSN
1001-9332
- Publication type
Article