Catechin, proanthocyanidin and lignin contents of loblolly pine (Pinus taeda) needles after chronic exposure to ozone

The New Phytologist
Fitzgerald L BookerA S Heagle

Abstract

Concentrations of soluble and bound phenolic compounds were measured in needles of 3-yr-old loblolly pine (Pinus taeda L.) trees exposed from May to November 1993 to a range of ozone (O3 ) concentrations in open-top field chambers, The treatments were charcoal-filtered air (CF). non-filtered air (NF), and NF air with O2 added at 1.5 times (NF 1.5) and 2(1 times (NF 2.0) the ambient O., concentration for 12 h daily. Average daily (0800-2000 hours) O3 concentrations in the CF. NF. NF 1.5 and NF 20 treatments were. 29. 47, 76 and 98 nl 1(-1) . respectively, for the 140 d treatment period. At the end of the treatment period, total phenolic and proanthocyanidin concentrations in the previous year's needles were 25-29% higher in the NF 2.0 treatment compared with the lower O3 treatments. Catechin concentration increased in the previous year's needles by as much as 81 % between the NF 2.0 treatment and the lower O3 treatments. Catechin is an effective antioxidant, and elevated levels might confer some protection against O3 injury. No significant differences in total phenolics and proanthocyanidins in the previous year's needles were detected among the remaining treatments, or among any O3 treatment for the current year's needles. Lign...Continue Reading

References

Mar 1, 1991·Journal of Chemical Ecology·D N JordanD H Gjerstad
Feb 1, 1988·Journal of Chemical Ecology·A E Hagerman
Mar 1, 1987·Journal of Chemical Ecology·A E Hagerman

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Citations

Jul 11, 2007·Bulletin of Environmental Contamination and Toxicology·Q GuangqiuL Haoliang
Aug 6, 2000·Environmental and Experimental Botany·C SodaC Tani
Jul 22, 1997·Proceedings of the National Academy of Sciences of the United States of America·J J MacKayR R Sederoff
Oct 13, 2009·Biological Trace Element Research·Houda BouaziziEzzeddine El Ferjani
Dec 17, 2003·Journal of Environmental Quality·Christine RoblesGilles Bonin
Oct 10, 2008·Journal of Agricultural and Food Chemistry·M A Susan MarlesKirstin E Bett
Jan 20, 2004·Plant Physiology·Mireille CabanéCatherine Lapierre

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