NDLI: Effects of Carbon Dioxide, Water Supply, and Seasonality on Terpene Content and Emission by Rosmarinus officinalis

Content Provider	Springer Nature Link
Author	Peñuelas, Josep Llusià, Joan
Copyright Year	1997
Abstract	Rosmarinus officinalis L. plants were grown under carbon dioxide concentrations of 350 and 700 μmol/mol (atmospheric CO$_{2}$ and elevated CO$_{2}$) and under two levels of irrigation (high water and low water) from October 1, 1994 to May 31, 1996. Elevated CO$_{2}$ led to increasingly larger monthly growth rates than the atmospheric CO$_{2}$ treatments. The increase was 9.5% in spring 1995, 23% in summer 1995, and 53% in spring 1996 in the high-water treatments, whereas in low-water treatments the growth response to elevated CO$_{2}$ was constrained until the second year spring, when there was a 47% increase. The terpene concentration was slightly larger in the elevated CO$_{2}$ treatments than in atmospheric CO$_{2}$ treatments and reached a maximum 37% difference in spring 1996. There was no significant effect of water treatment, likely as a result of a mild low water treatment for a Mediterranean plant. Terpene concentration increased throughout the period of study, indicating possible age effects. The most abundant terpenes were α-pinene, cineole, camphor, borneol, and verbenone, which represented about 75% of the total. No significant differences were found in the terpene composition of the plants in the different treatments or seasons. The emission of volatile terpenes was much larger in spring (about 75 μg/dry wt/hr) than in autumn (about 10 μg/dry wt/hr), partly because of higher temperature and partly because of seasonal effect, but no significant difference was found because of CO$_{2}$ or water treatment. The main terpene emitted was α-pinene, which represented about 50% of the total. There was no clear correlation between content and emission, either quantitatively or qualitatively. More volatile terpenes were proportionally more important in the total emission than in total content and in autumn than in spring.
Starting Page	979
Ending Page	993
Page Count	15
File Format	PDF
ISSN	00980331
Journal	Journal of Chemical Ecology
Volume Number	23
Issue Number	4
e-ISSN	15731561
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	1997-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Agriculture Ecology Biological Microscopy
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry Ecology, Evolution, Behavior and Systematics

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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