Moderate drought did not affect the effectiveness of ethylenediurea (EDU) in protecting Populus cathayana from ambient ozone

Yue, Xin; Yuan, Xiangyang; Shang, Bo; Manning, William J.; Yang, Aimei; Wang, You‐Nian; Zhu, Feng

doi:10.1016/j.scitotenv.2016.06.247

Cited by 17 publications

(10 citation statements)

References 46 publications

(71 reference statements)

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“…In order to calibrate the plant-level isoprene emission, leaf discs for chlorophyll analysis were extracted immediately after isoprene sampling with 95% ethanol as explained in Xin et al (2016). Total chlorophyll (a + b) content was assayed by using the specific absorption coefficients of Lichtenthaler (1989).…”

Section: Assessment Of Plant-level Isoprene Emissionmentioning

confidence: 99%

“…Thanks to control measures, peak O 3 concentrations tend to decline in North America and Europe (Paoletti, De Marco, Beddows, Harrison, & Manning 2014;Sicard et al 2016), while annual averages are still increasing in many other regions, in particular in Asia, due to increasing O 3 -precursor emissions (Feng, Liu, & Zhang 2015). For example, high concentrations of O 3 frequently occur in many regions and cities of China, where the daily 8 h average may exceed 50 ppb during the crop growth season (Wang, Wei, Ding, et al 2009;Tang et al 2013;Xin et al 2016). Yuan et al (2015) observed frequent peaks exceeding 170 ppb during summer days in Beijing.…”

Section: Introductionmentioning

confidence: 99%

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Concentration‐ and flux‐based dose–responses of isoprene emission from poplar leaves and plants exposed to an ozone concentration gradient

Yuan

Feng

Liu

et al. 2017

Plant Cell & Environment

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Concentration- and flux-based O dose-responses of isoprene emission from single leaves and whole plants were developed. Two poplar clones differing in O sensitivity were exposed to five O levels in open-top chambers for 97 d: charcoal-filtered ambient air (CF), non-filtered ambient air (NF) and NF plus 20 ppb (NF + 20), 40 ppb (NF + 40) and 60 ppb (NF + 60). At both leaf and plant level, isoprene emission was significantly decreased by NF + 40 and NF + 60 for both clones. Although intra-specific variability was found when the emissions were up-scaled to the whole plant, both leaf- and plant-level emissions decreased linearly with increasing concentration-based (AOT40, cumulative exposure to hourly O concentrations >40 ppb) and flux-based indices (POD , cumulative stomatal uptake of O > Y nmol O m PLA s ). AOT40- and POD -based dose-responses performed equally well. The two clones responded differently to AOT40 and similarly to POD (with a slightly higher R for POD ) when the emission was expressed as change relative to clean air. We thus recommend POD as a large-scale risk assessment metric to estimate isoprene emission responses to O in poplar.

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Section: Assessment Of Plant-level Isoprene Emissionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Concentration‐ and flux‐based dose–responses of isoprene emission from poplar leaves and plants exposed to an ozone concentration gradient

Yuan

Feng

Liu

et al. 2017

Plant Cell & Environment

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“…Recently, Xin et al (2016) reported that the daily mean ambient ozone concentration was 71.7 ppb, and the maximum hourly peak ozone concentration was 173.1 ppb during June to September 2015 in Changping site, downwind of Beijing city. High ozone concentrations can have negative impacts on plants, including visible injury, impairment of photosynthesis, reductions in growth and yield, and altered plant interactions with pests and diseases (Feng et al, 2008aKarlsson et al, 2007;Wittig et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Ozone exposure- and flux-based response relationships with photosynthesis, leaf morphology and biomass in two poplar clones

Shang

Feng

Пин

et al. 2017

Science of The Total Environment

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“…EDU has been applied to plenty of agricultural crops. However, it has been applied only to few tree species: Fagus sylvatica L., Fraxinus americana L., F. excelsior L. and F. pennsylvanica Marshall., Liriodendron tulipifera L., Pinus taeda L., Prunus serotina Ehrh, and different poplars (Paoletti et al 2009;Agathokleous et al 2015d;Xin et al 2016). This is because such experimentations with trees are more difficult to be conducted (Manning et al 2011).…”

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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Moderate drought did not affect the effectiveness of ethylenediurea (EDU) in protecting Populus cathayana from ambient ozone

Cited by 17 publications

References 46 publications

Concentration‐ and flux‐based dose–responses of isoprene emission from poplar leaves and plants exposed to an ozone concentration gradient

Concentration‐ and flux‐based dose–responses of isoprene emission from poplar leaves and plants exposed to an ozone concentration gradient

Ozone exposure- and flux-based response relationships with photosynthesis, leaf morphology and biomass in two poplar clones

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

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