Effects of ozone-induced stomatal closure on ozone uptake and its changes due to leaf age in sun and shade leaves of Siebold's beech

Hoshika, Yasutomo; Watanabe, Makoto; Inada, Naoki; Koike, Takao

doi:10.2480/agrmet.d-14-00013

Cited by 13 publications

(5 citation statements)

References 51 publications

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“…In recent years, there has been an increase in the concentration of ozone in Japan due to a decrease in NO titration and an increase in transboundary air pollution [1][2][3]. With long-term ozone exposure effects on plants, changes in the carbon allocation, photosynthetic rate [4], stomatal conductance [5], yield of crops [6], and biogenic volatile organic compound (BVOC) emission characteristics [7] have been reported. The effects of ozone exposure on BVOC emissions have been previously evaluated, and the results of such experiments have not shown a consistent trend with large interspecies variations.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Changes in Interclone Variation Following Ozone Exposure on Three Major Gene Pools: An Analysis of Cryptomeria Japonica Clones

et al. 2019

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Recently, there has been a continuous increase in the concentration of tropospheric ozone in urban forests in Japan. Since monoterpenes are precursors to ozone, we need to evaluate the effects of ozone exposure on all tree species that are considered to be sources of monoterpenes. Cryptomeria japonica, which is the most widely planted afforestation tree, is classified into three different gene pools. However, the interclone variation for seasonal changes in the ozone exposure effect has not been evaluated. Thus, free-air ozone enhancement experiments were conducted using three representative clones of C. japonica in the summer and winter. After exposure to twice the ozone concentration in the ambient atmosphere, the effect on the monoterpene emission rate was found to be considerably different among the clones and for the different seasons. The monoterpene emission rate after ozone exposure increased in winter and summer in the native clones (Donden and Yakushima) in the snow area and heavy rain area, respectively. Since monoterpenes are antibacterial substances, each clone adapted sensitivity to stress during each season upon considerable damage. These results suggest that not only differences between tree species but also differences between clones are important for evaluating seasonal variation characteristics after ozone exposure.Keywords: biogenic volatile organic compound (BVOC); branch enclosure method; automated thermal desorption gas chromatography mass spectrometry (ATD-GC/MS); G93 algorithm; free-air ozone enhancement experiment

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Section: Introductionmentioning

confidence: 99%

Seasonal Changes in Interclone Variation Following Ozone Exposure on Three Major Gene Pools: An Analysis of Cryptomeria Japonica Clones

et al. 2019

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“…Ozone enters plant tissues via stomata (Hoshika et al 2015;Watanabe et al 2015). Uptake of elevated O 3 doses by plants stimulates production of reactive oxygen species (and thus lipid peroxidation), activation of antioxidant mechanisms and other repair processes (Alexou et al 2007;Pellegrini et al 2015;Vaultier and Jolivet 2015).…”

Section: Introductionmentioning

confidence: 99%

Impacts of ethylenediurea (EDU) soil drench and foliar spray in Salix sachalinensis protection against O3-induced injury

Agathokleous

Paoletti

Saitanis

et al. 2016

Science of The Total Environment

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It is widely accepted that elevated levels of surface ozone (O) negatively affect plants. Ethylenediurea (EDU) is a synthetic substance which effectively protects plants against O-caused phytotoxicity. Among other questions, the one still open is: which EDU application method is more appropriate for treating fast-growing tree species. The main aims of this study were: (i) to test if chronic exposure of Salix sachalinensis plants to 200-400mgEDUL, the usually applied range for protection against O phytotoxicity, is beneficial to plants; (ii) to evaluate the effects of chronic exposure to elevated O on S. sachalinensis; (iii) to assess the efficacy of two methods (i.e. soil drench and foliar spray) of EDU application to plants; (iv) to investigate the appropriate concentration of EDU to protect against elevated O-induced damage in S. sachalinensis; and (v) to compare the two methods of EDU application in terms of effectiveness and EDU consumption. Current-year cuttings grown in infertile soil free from organic matter were exposed either to low ambient O (AOZ, 10-h≈28.3nmolmol) or to elevated O (EOZ, 10-h≈65.8nmolmol) levels during daylight hours. Over the growing season, plants were treated every nine days with 200mL soil drench of 0, 200 or 400mgEDUL or with foliar spray of 0, 200 or 400mgEDUL (in two separate experiments). We found that EDU per se had no effects on plants exposed to AOZ. EOZ practically significantly injured S. sachalinensis plants, and the impact was indifferent between the experiments. EDU did not protect plants against EOZ impact when applied as soil drench but it did protect them when applied as 200-400mgL foliar spray. We conclude that EDU may be more effective against O phytotoxicity to fast-growing species when applied as a spray than when applied as a drench. Keymessage: Soil-drenched EDU was ineffective in protecting willow plants against O-induced injury, whereas foliar-sprayed EDU was effective even at the concentration of 200mgL.

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“…A high g s enhanced stomatal O 3 uptake, thus, leading to higher O 3 damage [15]. The level of g max in A. glutinosa was comparable to that of the other O 3 -sensitive species such as Oxford poplar clone (340 to 520 mmol m −2 s −1 ) [27,33] and Fagus crenata (315 mmol m −2 s −1 ) [34,35].…”

Section: New Do3se Parameterization In Three Deciduous Tree Speciesmentioning

confidence: 76%

Flux-Based Ozone Risk Assessment for a Plant Injury Index (PII) in Three European Cool-Temperate Deciduous Tree Species

Hoshika

Carrari

Mariotti

et al. 2020

Forests

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This study investigated visible foliar ozone (O3) injury in three deciduous tree species with different growth patterns (indeterminate, Alnus glutinosa (L.) Gaertn.; intermediate, Sorbus aucuparia L.; and determinate, Vaccinium myrtillus L.) from May to August 2018. Ozone effects on the timing of injury onset and a plant injury index (PII) were investigated using two O3 indices, i.e., AOT40 (accumulative O3 exposure over 40 ppb during daylight hours) and PODY (phytotoxic O3 dose above a flux threshold of Y nmol m−2 s−1). A new parameterization for PODY estimation was developed for each species. Measurements were carried out in an O3 free-air controlled exposure (FACE) experiment with three levels of O3 treatment (ambient, AA; 1.5 × AA; and 2.0 × AA). Injury onset was found in May at 2.0 × AA in all three species and the timing of the onset was determined by the amount of stomatal O3 uptake. It required 4.0 mmol m−2 POD0 and 5.5 to 9.0 ppm·h AOT40. As a result, A. glutinosa with high stomatal conductance (gs) showed the earliest emergence of O3 visible injury among the three species. After the onset, O3 visible injury expanded to the plant level as confirmed by increased PII values. In A. glutinosa with indeterminate growth pattern, a new leaf formation alleviated the expansion of O3 visible injury at the plant level. V. myrtillus showed a dramatic increase of PII from June to July due to higher sensitivity to O3 in its flowering and fruiting stage. Ozone impacts on PII were better explained by the flux-based index, PODY, as compared with the exposure-based index, AOT40. The critical levels (CLs) corresponding to PII = 5 were 8.1 mmol m−2 POD7 in A. glutinosa, 22 mmol m−2 POD0 in S. aucuparia, and 5.8 mmol m−2 POD1 in V. myrtillus. The results highlight that the CLs for PII are species-specific. Establishing species-specific O3 flux-effect relationships should be key for a quantitative O3 risk assessment.

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Effects of ozone-induced stomatal closure on ozone uptake and its changes due to leaf age in sun and shade leaves of Siebold's beech

Cited by 13 publications

References 51 publications

Seasonal Changes in Interclone Variation Following Ozone Exposure on Three Major Gene Pools: An Analysis of Cryptomeria Japonica Clones

Seasonal Changes in Interclone Variation Following Ozone Exposure on Three Major Gene Pools: An Analysis of Cryptomeria Japonica Clones

Impacts of ethylenediurea (EDU) soil drench and foliar spray in Salix sachalinensis protection against O3-induced injury

Flux-Based Ozone Risk Assessment for a Plant Injury Index (PII) in Three European Cool-Temperate Deciduous Tree Species

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