Ozone-induced changes in corn pollen

Mumford, Richard A.; Lipke, Herbert; Laufer, Daniel A.; Feder, William A.

doi:10.1021/es60064a010

Cited by 38 publications

(12 citation statements)

References 9 publications

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Section: Resultssupporting

confidence: 91%

“…Formation of aspartic acid via hydroxyl radical attack of asparagine during the predominantly clear (high actinic flux) preprecipitation days may also contribute to the significant change in concentrations. However, past work has determined that FAA in suspendable plant material (pollen) increases when exposed to atmospherically relevant levels of ozone [Mumford et al, 1972]. More recent work by Shiraiwa et al [2011] has indicated a significant increase in chemical transformation of amorphous protein by condensed phase ozone uptake, resulting in depletion of reactive amino acids in the combined protein form (CAA) [Shiraiwa et al, 2011].…”

Section: Meteorological Shiftmentioning

confidence: 99%

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Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM_2.5)

et al. 2013

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.[1] The impacts of meteorology and air quality on the concentrations and relative distributions of free and combined amino acids (FAA; CAA) are evaluated during a monthlong sampling campaign at a semiurban site in the southeastern U.S. The average FAA concentration in fine aerosols (PM 2.5 ) was 11 AE 6 ng m -3 , while CAA was found to be several times higher at 46 AE 21 ng m -3 . Glycine and alanine were the most abundant amino acids, accounting for 48% of FAA and 58% of the CAA, while distinct differences were observed in compound distributions; glutamic acid, aspartic acid, serine, and threonine accounted for a further 29% of FAA and 30% of the total CAA. An intense rainfall event during the campaign demonstrated the significant impact of meteorological and air quality conditions on FAA-CAA concentrations and distributions. Correlative trends with atmospheric oxidant (ozone) and inorganic nitrogen levels suggest an important role for atmospheric processing. The liquid chromatography-mass spectrometry (quadrupole timeof-flight) technique used in this study allowed for detection of coextracted water-soluble organic compounds and characterization of a larger fraction of the organic nitrogen mass. N-heterocyclic compounds were detected in samples from this campaign, indicating a likely biomass burning source contribution for organic nitrogen.

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Section: Resultssupporting

confidence: 91%

Section: Meteorological Shiftmentioning

confidence: 99%

Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM_2.5)

et al. 2013

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“…The O 3 effect on pollen grains has been considered in particular in studies of plant germination in vitro . However, opposing effects have been reported: Feder (1968, 1981) observed a reduction in Nicotiana tabacum pollen tube elongation, and similar results were reported for corn pollen by Mumford et al. (1972).…”

Section: Introductionmentioning

confidence: 64%

Ozone affects pollen viability and NAD(P)H oxidase release from Ambrosia artemisiifolia pollen

Pasqualini

Tedeschini

Frenguelli

et al. 2011

Environmental Pollution

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Air pollution is frequently proposed as a cause of the increased incidence of allergy in industrialised countries. We investigated the impact of ozone (O3) on reactive oxygen species (ROS) and allergen content of ragweed pollen (Ambrosia artemisiifolia). Pollen was exposed to acute O3 fumigation, with analysis of pollen viability, ROS and nitric oxide (NO) content, activity of nicotinamide adenine dinucleotide phosphate (NAD[P]H) oxidase, and expression of major allergens. There was decreased pollen viability after O3 fumigation, which indicates damage to the pollen membrane system, although the ROS and NO contents were not changed or were only slightly induced, respectively. Ozone exposure induced a significant enhancement of the ROS-generating enzyme NAD(P)H oxidase. The expression of the allergen Amb a 1 was not affected by O3, determined from the mRNA levels of the major allergens. We conclude that O3 can increase ragweed pollen allergenicity through stimulation of ROS-generating NAD(P)H oxidase.

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“…Thus, the local pollen season likely explains our observations, although other factors may partly contribute. For example, high ozone concentration and strong UV radiation were recorded during this time period, and in some studies ozone has been demonstrated to promote the decomposition of protein and peptides into free amino acids increasing the FAA concentrations (Samy et al, 2013;Mumford et al, 1972). Positive correlation was observed between FAA concentration in the size fraction > 10 µm with ozone (R = 0.58, p < 0.05, Fig.…”

Section: Overview Of Meteorological Factors and Sourcesmentioning

confidence: 76%

Characterization of free amino acids, bacteria and fungi in size-segregated atmospheric aerosols in boreal forest: seasonal patterns, abundances and size distributions

et al. 2017

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Abstract. Primary biological aerosol particles (PBAPs) are ubiquitous in the atmosphere and constitute ∼ 30 % of atmospheric aerosol particle mass in sizes > 1 µm. PBAP components, such as bacteria, fungi and pollen, may affect the climate by acting as cloud-active particles, thus having an effect on cloud and precipitation formation processes. In this study, size-segregated aerosol samples (< 1.0, 1-2.5, 2.5-10 and > 10 µm) were collected in boreal forest (Hyytiälä, Finland) during a 9-month period covering all seasons and analysed for free amino acids (FAAs), DNA concentration and microorganism (bacteria, Pseudomonas and fungi). Measurements were performed using tandem mass spectrometry, spectrophotometry and qPCR, respectively. Meteorological parameters and statistical analysis were used to study their atmospheric implication for results. Distinct annual patterns of PBAP components were observed, late spring and autumn being seasons of dominant occurrence. Elevated abundances of FAAs and bacteria were observed during the local pollen season, whereas fungi were observed at the highest level during autumn. Meteorological parameters such as air and soil temperature, radiation and rainfall were observed to possess a close relationship with PBAP abundances on an annual scale.

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Ozone-induced changes in corn pollen

Cited by 38 publications

References 9 publications

Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM_2.5)

Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM_2.5)

Ozone affects pollen viability and NAD(P)H oxidase release from Ambrosia artemisiifolia pollen

Characterization of free amino acids, bacteria and fungi in size-segregated atmospheric aerosols in boreal forest: seasonal patterns, abundances and size distributions

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Ozone-induced changes in corn pollen

Cited by 38 publications

References 9 publications

Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM2.5)

Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM2.5)

Ozone affects pollen viability and NAD(P)H oxidase release from Ambrosia artemisiifolia pollen

Characterization of free amino acids, bacteria and fungi in size-segregated atmospheric aerosols in boreal forest: seasonal patterns, abundances and size distributions

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Product

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Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM_2.5)

Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM_2.5)