Photosynthetica 2008, 46(3):463-465 | DOI: 10.1007/s11099-008-0079-8

Sensitivity of Metasequoia glyptostroboides to ozone stress

Z. Z. Feng1,*, H. Q. Zeng1, X. K. Wang1, Q. W. Zheng1, Z. W. Feng1
1 State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, P.R. China

2-year-old seedlings of Metasequoia glyptostroboides were grown in open top chambers and exposed to four ozone concentrations [O3] (charcoal-filtered air, CF; 50, 100, and 200 mm3 m-3) for 25 d. Measurements of growth, leaf chlorophyll (Chl) content, and gas exchange parameters were made before and/or after O3 exposure. Leaf length, crown width, Chl a/b, net photosynthetic rate, stomatal conductance, and transpiration rate were significantly reduced at 100 and 200 mm3(O3) m-3. A remarkable decrease in stomatal conductance also occurred at 50 mm3(O3) m-3.

Additional key words: air pollution; chlorophyll; crown width; leaf length; net photosynthetic rate; stem height; stomatal conductance; transpiration rate; urban greening tree species

Received: January 4, 2008; Accepted: March 7, 2008; Published: September 1, 2008  Show citation

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Feng, Z.Z., Zeng, H.Q., Wang, X.K., Zheng, Q.W., & Feng, Z.W. (2008). Sensitivity of Metasequoia glyptostroboides to ozone stress. Photosynthetica46(3), 463-465. doi: 10.1007/s11099-008-0079-8
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