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Effect of ambient ozone at the somma of Lake Mashu on growth and leaf gas exchange in Betula ermanii and Betula platyphylla var. japonica

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Title: Effect of ambient ozone at the somma of Lake Mashu on growth and leaf gas exchange in Betula ermanii and Betula platyphylla var. japonica
Authors: Hoshika, Yasutomo Browse this author →KAKEN DB
Tatsuda, Shinpei Browse this author
Watanabe, Makoto Browse this author →KAKEN DB
Wang, Xiao-na Browse this author
Watanabe, Yoko Browse this author
Saito, Hideyuki Browse this author →KAKEN DB
Koike, Takayoshi Browse this author →KAKEN DB
Keywords: Tropospheric ozone
Birch
Forest decline
Biomass allocation
Photosynthesis
Issue Date: Jun-2013
Publisher: Elsevier
Journal Title: Environmental and Experimental Botany
Volume: 90
Start Page: 12
End Page: 16
Publisher DOI: 10.1016/j.envexpbot.2012.11.003
Abstract: We examined the effects of ambient ozone, at the somma of Lake Mashu in northern Japan, on the growth and photosynthetic traits of two common birch species in Japan (mountain birch and white birch). Seedlings of the two birch species were grown in open-top chambers and were exposed to charcoal-filtered ambient air (CF) or non-filtered ambient air (NF) at the somma of Lake Mashu during the growing season in 2009. For the mountain birch, ambient ozone significantly increased the ratio of aboveground dry mass to belowground dry mass (TIR ratio), although no difference in the whole-plant biomass was observed between the treatments. For the white birch, in contrast, ozone exposure at ambient level did not decrease in growth and photosynthesis. These results suggest that ambient O-3 at the somma of Lake Mashu may shift the allocation of biomass to above-ground rather than below-ground in the mountain birch. (C) 2012 Elsevier B.V. All rights reserved.
Type: article (author version)
URI: http://hdl.handle.net/2115/52946
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小池 孝良

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