[Effects of elevated ozone on phenolic substances content and total antioxidative capacity of Quercus mongolica leaves].
An open-top chamber experiment was conducted to examine the effects of elevated atmospheric O3 (80 +/- 8 nmol x mol(-1)) on the total phenols, flavonoid, condensed tannin, and MDA contents, and the total antioxidative capacity of Quercus mongolica leaves. Elevated O3 increased the contents of total phenols and condensed tannin by 48.17% and 26.77% (P < 0.05), and the flavonoid and MDA contents by 24.66% and 5.26% (P > 0.05), respectively. The total antioxidant capacity of Q. mogonlica leaves determined by DPPH method was enhanced significantly (P < 0.05), and had an obvious linear relationship with the contents of total phenols and condensed tannin.
Zhang
Guo-you
GY
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. guoyouzhang@163.com
He
Xing-yuan
XY
Tang
Ling
L
Yan
Kun
K
Chen
Wei
W
Xu
Sheng
S
Li
Xiang
X
D000393:Air Pollutants / Q000633:toxicity*; D005419:Flavonoids / Q000378:metabolism; D008315:Malondialdehyde / Q000378:metabolism*; D010126:Ozone / Q000633:toxicity*; D010636:Phenols / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D044945:Proanthocyanidins / Q000378:metabolism; D029963:Quercus / Q000378:metabolism*
D000393:Air Pollutants; D005419:Flavonoids; D010636:Phenols; D044945:Proanthocyanidins; D008315:Malondialdehyde; D010126:Ozone