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Green, Brett James; Yli‐Panula, Eija; Dettmann, Mary E.; Rutherford, Shannon; Simpson, R.W.

doi:10.1023/a:1022662726623

Cited by 14 publications

(3 citation statements)

References 25 publications

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“…Huusko and Hicks (2009) found on the basis of 23-year observations of spruce and pine pollen deposition (pollen accumulation rates: PARs) the high correlation between pollen quantity and summer temperature around July in the year before the pollen emission. The similar observations were published by Green et al (2003), who found a statistically significant correlation between daily average airborne Pinus pollen concentrations and minimum, maximum temperature and rainfall, while Hjelmroos (1991) indicated the influence of air turbulences and washout on Betula pollen fall in Scandinavia. For Pinus sylvestris , the quantity of pollen deposited is affected by mean July temperatures, July effective temperature sum and total effective temperature sum, for the year previous to the pollen emission (Autio and Hicks 2004).…”

Section: Discussionsupporting

confidence: 86%

The long-range transport of Pinaceae pollen: an example in Kraków (southern Poland)

et al. 2016

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High Pinaceae pollen concentrations in the air and on the surface of puddles before the main pollen season started were observed in Kraków (southern Poland) in May 2013. The paper presents the results of detailed studies of the composition and source of the “yellow rain” in 2013, and as a comparison, the Pinaceae pollen concentrations and samples collected from the ground surface in 2014 were considered. The air samples were collected using the volumetric method (Hirst-type device), while pollen grains sampled from the ground surface were processed using a modified Erdtman acetolysis method. Finally, all samples were studied using a light microscope. In 2013, the period of higher Abies, Picea and Pinus pollen concentrations was observed from the 5 to 12 of May, earlier than the main pollen season occurred. The presence of rainfall on the 12 and 13 of May 2013 caused the pollen deposition on the ground surface, where the prevalence of Pinaceae pollen was found. The synoptic situation and the analysis of the back-trajectories and air mass advection at the beginning of May 2013 indicated that Pinaceae pollen grains could have been transported from Ukraine, Romania, Hungary and Slovakia. In contrast, Pinaceae pollen grains deposited on the ground surface as a “yellow” film in May 2014, originated from local sources.

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Section: Discussionsupporting

confidence: 86%

The long-range transport of Pinaceae pollen: an example in Kraków (southern Poland)

et al. 2016

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“…Increases in the bicyclic monoterpenes, alpha and beta pinene, and the ketone, camphor, predict asthma symptoms, as does the acyclic alcohol, linalool, and its related ester, linalyl acetate. These compounds are similarly found in emissions from OSR crops (canola) ,31 and conifers,43 and many other plants, and are additional to predictors investigated by others previously 14,18–20,44. Nasal congestion reported in response to seven terpenes in spring may be related to rhinosinusitis 45…”

Section: Discussionmentioning

confidence: 64%

“…The focus in Australia,18–20 and elsewhere,21 regarding plant-associated asthma, has been anemophilous pollen (wind disseminated), especially grasses and weed pollens. Oil-bearing plants, especially from the Myrtaceae family, containing terpenoids and aromatic compounds blanket the Australasian landscape and have entomophilous (insect-pollinated) pollens that are oily, sticky, and clump together, reducing numbers in pollen traps.…”

Section: Introductionmentioning

confidence: 99%

<p>Essential oils, asthma, thunderstorms, and plant gases: a prospective study of respiratory response to ambient biogenic volatile organic compounds (BVOCs)</p>

Gibbs

2019

JAA

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Purpose: Prevailing opinion is that wind-pollinated plants affect asthma negatively and that insect- pollinated ones do not. “Thunderstorm” asthma, too, is attributed to bursting grass pollens. Additional biogenic volatile organic compounds (BVOCs) are identified here. Essential oils’ BVOCs are inhaled from plants, oil diffusers, candles, room “fresheners”, perfumes, and hygiene products. Claims of BVOC “safety” for sensitive respiratory systems are questioned. Methods: Fourteen volunteers, of mixed-age and gender, with seasonal asthma recorded peak expiratory flow (PEF) and 11 symptom scores. BVOCs were collected on Tenax tubes from ambient air in autumn and spring, as were live flower emissions, before and after a thunderstorm. Gas chromatography–mass spectrometry analysis identified frequently occurring BVOCs. Air spora, meteorological, outdoor air pollution variables, and BVOCs predict respiratory symptoms in univariate linear regression models, seasonally. Results: Increased pinene, camphor, linalool, linalyl acetate, benzaldehyde, and benzoic acid predict respiratory symptoms, including reduced PEF, and increased nasal congestion; day length, atmospheric pressure and temperature predict symptoms in both seasons, differently; other variables predict a range of symptoms (0.0001≤ p ≤0.05). Thunder predicts different BVOC emissions in spring, compared to autumn ( p ≤0.05). An uncut Grevillea flower emitted linalool and hexenal before a storm; the latter is also emitted from cut grass. Increased nitrogen oxides and pinene in autumn may combine to form harmful oxidation products. Conclusion: This research supports BVOCs as contributors to seasonal asthma and allergic rhinitis, and “thunderstorm” asthma. Pinene emissions from Myrtaceae species ( Eucalyptus, Melaleuca, Leptospermum, Callistemon ), Brassicaceae (canola), and conifers, worldwide, may induce respiratory inflammation and maintain it, by inhibiting eosinophilic apoptosis. Widely used essential oil products containing BVOCs, like linalool, are associated here with respiratory symptoms. Lagged responses suggest that users’ cognitive associations between exposure and response are unlikely, increasing potential for impaired health for vulnerable children.

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Changes in the Mediterranean pine forest: pollination patterns and annual trends of airborne pollen

et al. 2017

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Untitled

Cited by 14 publications

References 25 publications

The long-range transport of Pinaceae pollen: an example in Kraków (southern Poland)

The long-range transport of Pinaceae pollen: an example in Kraków (southern Poland)

<p>Essential oils, asthma, thunderstorms, and plant gases: a prospective study of respiratory response to ambient biogenic volatile organic compounds (BVOCs)</p>

Changes in the Mediterranean pine forest: pollination patterns and annual trends of airborne pollen

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