Screening agrochemicals as potential protectants of plants against ozone phytotoxicity

Saitanis, Costas J.; Lekkas, D.; Agathokleous, Evgenios; Flouri, F.

doi:10.1016/j.envpol.2014.11.013

Cited by 34 publications

(24 citation statements)

References 53 publications

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“…Therefore, the mean T-score of each species in each soil and each experimental unit, constituted the real-replicates in the overall analysis. As previously suggested by Saitanis et al (2014Saitanis et al ( , 2015, this process also allows a fair intercomparison of measured variables and removes any heterogeneity. In order to utilize the overall information and generalize the results at a community level, two steps were followed: First, in relation to the biomasses, data for each community (including all the species) in each treatment (i.e.…”

Section: Statisticsmentioning

confidence: 89%

“…Area:TDM is a significant indicator of the plant health, and is based on the Pipe Model theory of tree form (Shinozaki et al 1964a(Shinozaki et al , 1964b. Prior to the analysis, the data of each variable were standardized (Saitanis et al 2014(Saitanis et al , 2015. For the standardization, T-scores ( = − × 10 + 50) were used, with a mean equal to 50 and a standard deviation equal to 10.…”

Section: Statisticsmentioning

confidence: 99%

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Impact of elevated CO2 on root traits of a sapling community of three birches and an oak: a free-air-CO2 enrichment (FACE) in northern Japan

Agathokleous

Watanabe

Nakaji

et al. 2015

Trees

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We evaluated the root response to elevated CO 2 fumigation of 3 birches (Betula sp.) and 1 deciduous oak (Quercus sp.) grown in immature volcanic ash soil (VA) or brown forest soil (BF). VA is a nutrient-poor, phosphorus impoverished soil, broadly distributed in northern Japan. Each species had been exposed to either ambient (375-395 μmol mol-1) (aCO 2) or elevated (500 μmol mol-1) (eCO 2) CO 2 during the daytime (more than 70 μmol m-2 s-1) over 4 growing seasons. The results suggest that eCO 2 did not cause an increase in total root production when the community had grown in fertile BF soil, however it did cause a large increase when the community was grown in infertile VA soil. Yet, carbon allocation to plant roots was not affected by eCO 2 in either the BF and VA soils. Rhizo-morphogenesis appeared to occur to a greater extent under eCO 2. It seems that the saplings developed a massive amount of fine roots under the VA and eCO 2 conditions. Unexpectedly, eCO 2 resulted in a larger total root mass when the community was grown in VA soil than when grown in BF soil (eCO 2 ×VA vs. eCO 2 ×BF). These results may hint to a site-specific potential of communities to sequester future atmospheric carbon. The 2 growing substance of plants is an important factor which root response to eCO 2 depends on, however further studies are needed for a better understanding.

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Section: Statisticsmentioning

confidence: 89%

Section: Statisticsmentioning

confidence: 99%

Impact of elevated CO2 on root traits of a sapling community of three birches and an oak: a free-air-CO2 enrichment (FACE) in northern Japan

Agathokleous

Watanabe

Nakaji

et al. 2015

Trees

Self Cite

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“…The damage caused to plants as a consequence of high O 3 concentrations could be mitigated or prevented by application of antioxidants, such as ascorbic acid, glutathione, and the antiozonant ethylenediurea (EDU) (Didyk and Blum, 2010;Feng et al, 2010;Lisko et al, 2014;Manning, 2000;Manning et al, 2011;Paoletti et al, 2009;Saitanis et al, 2015). These antioxidants and EDU have been extensively used in USA and many European countries to protect crop yield loss from ambient ozone.…”

Section: Applying Chemical Protective Agents At Key Phenological Stagesmentioning

confidence: 99%

Ground-level O3 pollution and its impacts on food crops in China: A review

Feng

Wang

et al. 2015

Environmental Pollution

255

104

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“…The antioxidant chemical N -[2-(2-oxo-1 imidazolidinyl) ethyl]-N′-phenylurea (ethylenediurea, abbreviated as EDU, with the formula C 4 H 10 N 4 O 2 ) has been since long (Carnahan et al 1978) shown to be an effective material for providing protection against visible foliar O 3 injury, as well as against growth reductions in agricultural and horticultural crops when applied as a spray, a potting medium drench, or trunk infusion (e.g., Hassan et al 1995;Manning 1999;Paoletti et al 2007;Saitanis et al 2015). EDU is a research chemical not commercially available and not registered for crop production.…”

Section: Introductionmentioning

confidence: 99%

Assessing ambient ozone injury in olive (Olea europaea L.) plants by using the antioxidant ethylenediurea (EDU) in Saudi Arabia

Basahi

Ismail

Haiba

et al. 2016

Environ Monit Assess

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The antiozonant chemical, ethylenediurea (N-[2-(2-oxo-1-imidazolidinyl)ethyl]-N'-phenylurea, abbreviated as EDU), was applied as stem injections or soil drenches to 5-year-old containerized plants of olive (Olea europaea L. cultivar Kalamata) in growth chambers in order to assess its ameliorative effects against realistic ozone (O3) stress. Visible injury symptoms were reduced greatly in individuals treated with EDU, with injection applications having greater protection than soil drenches. EDU application caused increases in the measured ecophysiological parameters compared to untreated individuals. In particular, the stem injection protected plants against photosynthetic impairment (unchanged net photosynthetic rates and intercellular CO2 concentration, in comparison to plants grown in filtered air). EDU application increased the protection of PSII from ambient O3 oxidative stress, although it did not retain the proportion of redox state of QA, pigment composition of photosynthetic apparatus and size of light-harvesting complex of PSII. However, the stem injection of plants with EDU induced lower non-photochemical quenching (NPQ) values in comparison to ambient air (-2 %), indicating a better photoprotection of PSII in comparison to soil drench application. EDU application caused increases in the morphological and biometric parameters compared to individuals exposed to ambient air. To the best of our knowledge, this is the first study highlighting the protection of Kalamata olive trees due to EDU in terms of growth, yield, visible injury, and photosynthetic performance. Furthermore, this study proved that EDU could be a low-cost and a low-technology efficient tool for assessing O3 effects on plant performances in the field in Saudi Arabia.

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Screening agrochemicals as potential protectants of plants against ozone phytotoxicity

Cited by 34 publications

References 53 publications

Impact of elevated CO2 on root traits of a sapling community of three birches and an oak: a free-air-CO2 enrichment (FACE) in northern Japan

Impact of elevated CO2 on root traits of a sapling community of three birches and an oak: a free-air-CO2 enrichment (FACE) in northern Japan

Ground-level O3 pollution and its impacts on food crops in China: A review

Assessing ambient ozone injury in olive (Olea europaea L.) plants by using the antioxidant ethylenediurea (EDU) in Saudi Arabia

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