Leaf fluxes of NO and NO2 in four herbaceous plant species: The role of ascorbic acid

Teklemariam, Thomas A.; Sparks, Jed P.

doi:10.1016/j.atmosenv.2005.12.010

Cited by 75 publications

(76 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The theoretical calculations of Ramge et al (1993) demonstrated sufficient rates to explain observed NO 2 leaf fluxes if the reactions between water and NO 2 and between NO 2 and ascorbate are taken into account. This direct role of ascorbate in the foliar uptake of NO 2 has been experimentally demonstrated by Teklemariam and Sparks (2006). They observed a significant correlation between leaf ascorbate concentrations and the NO 2 uptake by leaves.…”

Section: Breuninger Et Al: Field Investigations Of Nitrogen Dioxidementioning

confidence: 71%

“…Previous studies suggest that mesophyllic characteristics like leaf ascorbate concentration may influence NO 2 exchange rates (Ramge et al, 1993;Teklemariam and Sparks, 2006). The apoplastic ascorbate concentration varies with species, environmental conditions (Polle et al, 1995;Schwanz et al, 1996) and stage of development (Luwe, 1996).…”

Section: Compensation Point Concentrations Of Nomentioning

confidence: 99%

“…NO 2 emissions have been measured in several studies. Teklemariam and Sparks (2006) reported emissions from four species (wheat, corn, sunflower, and Madagascar periwinkle) that ranged between 36.8 and 101.0 pmol m −2 s −1 . Sparks et al (2001) observed NO 2 emissions up to 50 pmol m −2 s −1 from several tropical trees and Hereid and Monson (2001) from fieldgrown corn.…”

Section: No 2 Exchange With Leavesmentioning

confidence: 99%

“…For that, a suitable guide is the stomatal conductance for H 2 O (g H 2 O ) because this parameter gives information about the condition of the plant affected by air temperature, radiation and water vapor deficit. Furthermore, NO 2 exchange is known to be strongly regulated by stomatal conductance (Thoene et al, 1991;Geßler et al, 2000;Teklemariam and Sparks, 2006;Chaparro-Suarez et al, 2011). Hence, our data were classified into seven g H 2 O classes.…”

Section: No 2 Exchange Flux Density Deposition Velocity and Compensamentioning

confidence: 99%

See 3 more Smart Citations

Field investigations of nitrogen dioxide (NO<sub>2</sub>) exchange between plants and the atmosphere

2013

View full text Add to dashboard Cite

Abstract. The nitrogen dioxide (NO 2 ) exchange between the atmosphere and needles of Picea abies L. (Norway Spruce) was studied under uncontrolled field conditions using a dynamic chamber system. This system allows measurements of the flux density of the reactive NO-NO 2 -O 3 triad and additionally of the non-reactive trace gases CO 2 and H 2 O. For the NO 2 detection a highly NO 2 specific blue light converter was used, which was coupled to chemiluminescence detection of the photolysis product NO. This NO 2 converter excludes known interferences with other nitrogen compounds, which occur by using more unspecific NO 2 converters. Photo-chemical reactions of NO, NO 2 , and O 3 inside the dynamic chamber were considered for the determination of NO 2 flux densities, NO 2 deposition velocities, as well as NO 2 compensation point concentrations. The calculations are based on a bi-variate weighted linear regression analysis (y-and x-errors considered). The NO 2 deposition velocities for spruce, based on projected needle area, ranged between 0.07 and 0.42 mm s −1 . The calculated NO 2 compensation point concentrations ranged from 2.4 ± 9.63 to 29.0 ± 16.30 nmol m −3 (0.05-0.65 ppb) but the compensation point concentrations were all not significant in terms of compensation point concentration is unequal to zero. These data challenge the existence of a NO 2 compensation point concentration for spruce. Our study resulted in lower values of NO 2 gas exchange flux densities, NO 2 deposition velocities and NO 2 compensation point concentrations in comparison to most previous studies. It is essential to use a more specific NO 2 analyzer than used in previous studies and to consider photo-chemical reactions between NO, NO 2 , and O 3 inside the chamber.

show abstract

Section: Breuninger Et Al: Field Investigations Of Nitrogen Dioxidementioning

confidence: 71%

Section: Compensation Point Concentrations Of Nomentioning

confidence: 99%

Section: No 2 Exchange With Leavesmentioning

confidence: 99%

Section: No 2 Exchange Flux Density Deposition Velocity and Compensamentioning

confidence: 99%

See 2 more Smart Citations

Field investigations of nitrogen dioxide (NO<sub>2</sub>) exchange between plants and the atmosphere

2013

View full text Add to dashboard Cite

show abstract

“…This suggests NH 3 has a leaf-level compensation point (Krupa 2003). A compensation point has also been reported for NO 2 (Thoene et al 1991;Sparks et al 2001;Teklemariam and Sparks 2006) but it is usually small (\50 pmol) and often does not appear congruent with whole canopy estimates (Lerdau et al 2000). It has been suggested there is some level of storage (in the apoplast or in cellular vacuoles) of NO 3 -and NH 4 ?…”

Section: Physiological Ecology Of Foliar Uptakementioning

confidence: 93%

Ecological ramifications of the direct foliar uptake of nitrogen

2008

View full text Add to dashboard Cite

The foliar incorporation of various reactive forms of nitrogen (N) has been identified and studied for nearly 30 years. However, the ecosystem-level ramifications of this uptake pathway have only recently been considered by the scientific community. In this review, I present our current understanding of the foliar uptake process and then discuss why this pathway of N addition to ecosystems should be considered separately from the bulk deposition of N to the soil surface. Direct foliar uptake is a direct addition of N to plant metabolism and could potentially more readily influence plant growth compared to soildeposited N. Current ecosystem process models do not partition reactive N between foliar and soil entry pathways and the influence of N deposition on ecosystem C sequestration is likely inadequately represented in most models. I also outline several research priorities for the future understanding of the ecological consequences of foliar uptake of reactive N.

show abstract

The combined impact of canopy stability and soil NOx exchange on ozone removal in a temperate deciduous forest

Visser

Ganzeveld

Finco

et al. 2022

Preprint

View full text Add to dashboard Cite

Removal of ozone at the land surface (ozone dry deposition) is an important component of the tropospheric ozone budget, accounting for 15%-20% of the total tropospheric ozone sink (Bates & Jacob, 2020;Hu et al., 2017;Young et al., 2018). Ozone dry deposition occurs when air masses, transported downward by turbulent motions in the atmospheric boundary layer, come in contact with the land surface. Forests are particularly efficient ozone sinks (e.g., Hardacre et al., 2015): removal processes include plant uptake through stomata and various non-stomatal sinks such as external leaf surfaces and soils, and chemical removal in the canopy airspace (Fowler et al., 2009). Upon stomatal uptake, ozone may impact stomatal conductance and photosynthesis, reducing ecosystem carbon assimilation on large spatial scales (Ainsworth et al., 2012). Better quantitative estimates

show abstract

Leaf fluxes of NO and NO2 in four herbaceous plant species: The role of ascorbic acid

Cited by 75 publications

References 40 publications

Field investigations of nitrogen dioxide (NO<sub>2</sub>) exchange between plants and the atmosphere

Field investigations of nitrogen dioxide (NO<sub>2</sub>) exchange between plants and the atmosphere

Ecological ramifications of the direct foliar uptake of nitrogen

The combined impact of canopy stability and soil NOx exchange on ozone removal in a temperate deciduous forest

Contact Info

Product

Resources

About

Leaf fluxes of NO and NO2 in four herbaceous plant species: The role of ascorbic acid

Cited by 75 publications

References 40 publications

Field investigations of nitrogen dioxide (NO&lt;sub&gt;2&lt;/sub&gt;) exchange between plants and the atmosphere

Field investigations of nitrogen dioxide (NO&lt;sub&gt;2&lt;/sub&gt;) exchange between plants and the atmosphere

Ecological ramifications of the direct foliar uptake of nitrogen

The combined impact of canopy stability and soil NOx exchange on ozone removal in a temperate deciduous forest

Contact Info

Product

Resources

About

Field investigations of nitrogen dioxide (NO<sub>2</sub>) exchange between plants and the atmosphere

Field investigations of nitrogen dioxide (NO<sub>2</sub>) exchange between plants and the atmosphere