Stem injection of Populus nigra with EDU to study ozone effects under field conditions

Bortier, K.; Dekelver, G.; Temmerman, Ludwig De; Ceulemans, R.

doi:10.1016/s0269-7491(00)00075-0

Cited by 35 publications

(21 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results differed from a review on tree species (Populus Â euramericana 'I-214 0 , Populus deltoides Â maximowiczii 'Eridano' and Fraxinus excelsior) in Italy, exposed to ambient open-air or closed chambers, where EDU reduced O 3 effects on shoot growth but had no effects on stem diameter (Paoletti et al, 2009). This database included studies of Long and Davis (1991) and Bortier et al (2001).In these studies significant increase in stem diameter was observed on EDU-treated plants. Relative to tree ages, the duration of EDU application was short, most with one or two growing seasons.…”

Section: Discussionmentioning

confidence: 74%

Protection of plants from ambient ozone by applications of ethylenediurea (EDU): A meta-analytic review

Zhu

Wang

Szantoi

et al. 2010

Environmental Pollution

View full text Add to dashboard Cite

A meta-analysis was conducted to quantitatively assess the effects of ethylenediurea (EDU) on ozone (O 3 ) injury, growth, physiology and productivity of plants grown in ambient air conditions. Results indicated that EDU significantly reduced O 3 -caused visible injury by 76%, and increased photosynthetic rate by 8%, above-ground biomass by 7% and crop yield by 15% in comparison with non-EDU treated plants, suggesting that ozone reduces growth and yield under current ambient conditions. EDU significantly ameliorated the biomass and yield of crops and grasses, but had no significant effect on tree growth with an exception of stem diameter. EDU applied as a soil drench at a concentration of 200e400 mg/L has the highest positive effect on crops grown in the field. Long-term research on full-grown tree species is needed. In conclusion, EDU is a powerful tool for assessing effects of ambient [O 3 ] on vegetation.

show abstract

Section: Discussionmentioning

confidence: 74%

Protection of plants from ambient ozone by applications of ethylenediurea (EDU): A meta-analytic review

Zhu

Wang

Szantoi

et al. 2010

Environmental Pollution

View full text Add to dashboard Cite

show abstract

“…2). As ethylene has been associated with oxidative stress responses (Kato et al, 2000;Argandona et al, 2001;Bortier et al, 2001;Moeder et al, 2002;Nie et al, 2002;Manning et al, 2003), ethylene might act as a signal to activate oxidative defenses during heat stress. Taken together, these observations indicate that oxidative damage is a major component in heat damage under basal thermotolerance conditions.…”

Section: Discussionmentioning

confidence: 99%

Heat Stress Phenotypes of Arabidopsis Mutants Implicate Multiple Signaling Pathways in the Acquisition of Thermotolerance

et al. 2005

View full text Add to dashboard Cite

To investigate the importance of different processes to heat stress tolerance, 45 Arabidopsis (Arabidopsis thaliana) mutants and one transgenic line were tested for basal and acquired thermotolerance at different stages of growth. Plants tested were defective in signaling pathways (abscisic acid, salicylic acid, ethylene, and oxidative burst signaling) and in reactive oxygen metabolism (ascorbic acid or glutathione production, catalase) or had previously been found to have temperature-related phenotypes (e.g. fatty acid desaturase mutants, uvh6). Mutants were assessed for thermotolerance defects in seed germination, hypocotyl elongation, root growth, and seedling survival. To assess oxidative damage and alterations in the heat shock response, thiobarbituric acid reactive substances, heat shock protein 101, and small heat shock protein levels were determined. Fifteen mutants showed significant phenotypes. Abscisic acid (ABA) signaling mutants (abi1 and abi2) and the UV-sensitive mutant, uvh6, showed the strongest defects in acquired thermotolerance of root growth and seedling survival. Mutations in nicotinamide adenine dinucleotide phosphate oxidase homolog genes (atrbohB and D), ABA biosynthesis mutants (aba1, aba2, and aba3), and NahG transgenic lines (salicylic acid deficient) showed weaker defects. Ethylene signaling mutants (ein2 and etr1) and reactive oxygen metabolism mutants (vtc1, vtc2, npq1, and cad2) were more defective in basal than acquired thermotolerance, especially under high light. All mutants accumulated wild-type levels of heat shock protein 101 and small heat shock proteins. These data indicate that, separate from heat shock protein induction, ABA, active oxygen species, and salicylic acid pathways are involved in acquired thermotolerance and that UVH6 plays a significant role in temperature responses in addition to its role in UV stress.Plants and other organisms have both an inherent ability to survive exposure to temperatures above the optimal for growth (basal thermotolerance) and an ability to acquire tolerance to otherwise lethal heat stress (acquired thermotolerance). Acquired thermotolerance is induced by a short acclimation period at moderately high (but survivable) temperatures or by treatment with other nonlethal stress prior to heat stress (Kapoor et al., 1990;Vierling, 1991;Flahaut et al., 1996;Burke et al., 2000;Hong and Vierling, 2000;Massie et al., 2003;Larkindale et al., 2005). The ability to withstand and to acclimate to supra-optimal temperatures results from both prevention of heat damage and repair of heat-sensitive components. Organisms must also maintain metabolic homeostasis during stress or be able to reestablish homeostasis subsequent to the stress period. Although plants are frequently subjected to dramatic heating to above the optimal growth temperature, relatively little is known about the critical genes controlling either basal or acquired thermotolerance in plants.Heat stress has a complex impact on cell function, suggesting that many processes are involved in th...

show abstract

“…The application of EDU as soil drench induced a significant decrease in the extent of injured leaf surface area per symptomatic leaf (AA) and in the Plant Injury Index (PII), while the decrease of the percentage of injured leaflets per shoot was not significant. According to previous studies where EDU was applied to trees by stem injection (Ainsworth et al 1996, Ainsworth & Ashmore 1992, Bortier et al 2001 or trunk infusion (Paoletti et al 2007b), EDU protection was not complete, as visible injury was reduced by soil drench but not avoided. On average, the amount of injured leaflets and the severity of injury in injured leaflets were reduced by 55% and 44%, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Both trunk injection and infusion require making an entry hole in a tree trunk and provision of a reservoir of the chemical. The former method was applied to young Poplar cuttings (Ainsworth et al 1996, Ainsworth & Ashmore 1992, Bortier et al 2001. The latter method, where the chemical is taken up by transpiration of the tree, was applied to adult Ash trees in the "Millerose" Park of Turin, Italy (Paoletti et al 2007a(Paoletti et al , 2007b(Paoletti et al , 2008.…”

Section: Introductionmentioning

confidence: 99%

Soil drench of ethylenediurea (EDU) protects sensitive trees from ozone injury

Paoletti¹,

Manning²,

Ferrara³

et al. 2011

iForest

View full text Add to dashboard Cite

Ozone (O3) is the air pollutant of major concern for vegetation. Levels in Mediterranean cities may exceed the criteria for vegetation protection. Ozone may induce a number of plant responses, e.g., visible injury on the leaves, that affect the ornamental value of urban forests. Antioxidant application may protect sensitive plants from ozone. The most successful synthetic antioxidant is ethylenediurea (EDU). Here we set the optimal EDU dose and concentration (260 mg m-2 leaf, 450 ppm) for protecting adult Fraxinus excelsior trees from ozone visible injury by means of EDU applications as soil drench

show abstract

Stem injection of Populus nigra with EDU to study ozone effects under field conditions

Cited by 35 publications

References 19 publications

Protection of plants from ambient ozone by applications of ethylenediurea (EDU): A meta-analytic review

Protection of plants from ambient ozone by applications of ethylenediurea (EDU): A meta-analytic review

Heat Stress Phenotypes of Arabidopsis Mutants Implicate Multiple Signaling Pathways in the Acquisition of Thermotolerance

Soil drench of ethylenediurea (EDU) protects sensitive trees from ozone injury

Contact Info

Product

Resources

About