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The purpose of this study was to identify the effects of ozone pollution on the one woody species and two indoor plants in controlled environment. Pinus densiflora, Spathiphyllum patinii and Epipremnum aureum seedlings were exposed in both control and ozone chambers to investigate photosynthetic rate, water use efficiency, antioxidative enzyme activities such as GR(Glutathione reductase) and APX(Ascorbate peroxidase) activity and leaf anatomical response. Ozone was fumigated 8 hours for a day with 30 ppb concentration for 50 days. Pinus densiflora seedlings showed no significant difference on photosynthetic rate, water use efficiency, antioxidant enzyme activity during ozone exposure. Ozone concentration (30 ppb in this study) is not high enough to generate ozone damage on Pinus densiflora species. In contrast, ozone generally altered photosynthetic rate, antioxidant enzyme (especially GR) activity and leaf anatomy in two indoor species (Spathiphyllum patinii and Epipremnum aureum) exposed in ozone chamber were significantly differ from those of control in every measurement. These data suggest that two indoor species(Spathiphyllum patinii and Epipremnum aureum) are more sensitive to ozone than Pinus densiflora.

The Effects of Ozone on Photosynthesis, Antioxidative Enzyme Activity and Leaf Anatomical Response in the Indoor Plants and Japanese Red Pine