Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Agriculture / Faculty of Agriculture >
Peer-reviewed Journal Articles, etc >
Photosynthetic response of early and late leaves of white birch (Betula platyphylla var. japonica) grown under free-air ozone exposure
Title: | Photosynthetic response of early and late leaves of white birch (Betula platyphylla var. japonica) grown under free-air ozone exposure |
Authors: | Hoshika, Yasutomo Browse this author →KAKEN DB | Watanabe, Makoto Browse this author →KAKEN DB | Inada, Naoki Browse this author | Mao, Qiaozhi Browse this author | Koike, Takayoshi Browse this author →KAKEN DB |
Keywords: | Tropospheric ozone | White birch (Betula platyphylla var. japonica) | Heterophyll | Photosynthesis |
Issue Date: | Nov-2013 |
Publisher: | Elsevier sci ltd |
Journal Title: | Environmental pollution |
Volume: | 182 |
Start Page: | 242 |
End Page: | 247 |
Publisher DOI: | 10.1016/j.envpol.2013.07.033 |
PMID: | 23938447 |
Abstract: | Betula platyphylla var.japonica (white birch) has heterophyllous leaves (i.e., early and late leaves) and is a typical pioneer tree species in northern Japan. Seedlings of white birch were exposed to ozone during two growing seasons, and measurements were carried out in the second year. Early leaves did not show an ozone-induced reduction in photosynthesis because of lower stomatal conductance resulting in higher avoidance capacity for ozone-induced stress. Also, an ozone-related increase in leaf nitrogen content may partly contribute to maintain the photosynthetic capacity in early leaves under elevated ozone in autumn. On the other hand, late leaves showed an ozone-induced decline of photosynthesis and early defoliation of leaves occurred. Also, smaller leaf size and higher stomatal density in late leaves were observed under elevated ozone. Differences in stress resistance to ozone may be related to differing functional roles of early and late leaves for birch species. (C) 2013 Elsevier Ltd. All rights reserved. |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/54044 |
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: 星加 康智
|