Pollen allergy plants in Korea

Hong, Chein-Soo

doi:10.4168/aard.2015.3.4.239

Cited by 15 publications

(6 citation statements)

References 36 publications

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“…Nevertheless, P. occidentalis and G. biloba have been reported to disperse pollen, the main airborne allergen [43] in urban trees in Seoul, Korea. The main pollen allergens (Pla a 1, putative invertase inhibitor; Pla a 2, polygalacturonase; Pla a 3, nsLTP) of Platanus acerifolia have been reported [44][45][46].…”

Section: Discussionmentioning

confidence: 99%

The Removal Efficiencies of Several Temperate Tree Species at Adsorbing Airborne Particulate Matter in Urban Forests and Roadsides

Kwak

Lee

Kim

et al. 2019

Forests

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Although urban trees are proposed as comparatively economical and eco-efficient biofilters for treating atmospheric particulate matter (PM) by the temporary capture and retention of PM particles, the PM removal effect and its main mechanism still remain largely uncertain. Thus, an understanding of the removal efficiencies of individual leaves that adsorb and retain airborne PM, particularly in the sustainable planning of multifunctional green infrastructure, should be preceded by an assessment of the leaf microstructures of widespread species in urban forests. We determined the differences between trees in regard to their ability to adsorb PM based on the unique leaf microstructures and leaf area index (LAI) reflecting their overall ability by upscaling from leaf scale to canopy scale. The micro-morphological characteristics of adaxial and abaxial leaf surfaces directly affected the PM trapping efficiency. Specifically, leaf surfaces with grooves and trichomes showed a higher ability to retain PM as compared to leaves without epidermal hairs or with dynamic water repellency. Zelkova serrata (Thunb.) Makino was found to have significantly higher benefits with regard to adsorbing and retaining PM compared to other species. Evergreen needle-leaved species could be a more sustainable manner to retain PM in winter and spring. The interspecies variability of the PM adsorption efficiency was upscaled from leaf scale to canopy scale based on the LAI, showing that tree species with higher canopy density were more effective in removing PM. In conclusion, if urban trees are used as a means to improve air quality in limited open spaces for urban greening programs, it is important to predominantly select a tree species that can maximize the ability to capture PM by having higher canopy density and leaf grooves or trichomes.

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Section: Discussionmentioning

confidence: 99%

The Removal Efficiencies of Several Temperate Tree Species at Adsorbing Airborne Particulate Matter in Urban Forests and Roadsides

Kwak

Lee

Kim

et al. 2019

Forests

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“…Since seasonal sensitivities increase in the spring and allergic reactions occur in sensitive people, especially children and the elderly, investigating allergenicity of the pollen grains and aromatic petalsin plants that pollinatein the spring is necessary. Because the pollen grains of this plant are carried by bumblebees and wasps (21,24), it is possible that pollen grains containing allergen compounds used in honey production can enter the human body (8,25). Our research in 2014, showed allergenicity petals of old ontogenical (26).…”

Section: Introductionmentioning

confidence: 86%

“…Among the 29 protein families of pollen allergens, expansins constitute the major pollen allergen (ubiquitous plant cell wall glycoproteins (2, 6) ), profilins, and calciumbinding proteins or polcalcin family (7,8). Allergen compounds present in pollen due to humidity, high winds, heavy rains, the accumulation of pollutants, environmental temperature and pH variation, and the surrounding dust can enter the respiratory system and cause various types of allergic diseases (9).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Allergenicity of Mature Pollen Grains and Petals in Two Ontogenic Stages in Cytisus scoparius L.

Iziy¹,

Nasr²,

Majd³

2016

J Biomed

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Cytisus scoparius L. is a plant commonly grown in parks, on highway margins, and in urban green spaces due to its beauty and flowers. It belongs to the family Fabaceae. The allergenicity of its pollen grains has been demonstrated (Majd & Rezanejad,2004); however,the allergenicity of thevery fragrant petals and its severitycompared withthat of maturepollen grains are unclear. Therefore, our aim was to investigate the allergenicity of pollen grain sand extremely fragrant petal songuinea pigs. In this study, buffered mature pollen extract and buffer extracts of petals at two ontogenic stages of old and middle-aged plants were prepared at a concentration of 16% and injected intra peritoneally and subdermally into guinea pigs. After the injection of extracts into the peritoneumfor 5 weeks, at 1-week intervals, blood samples were collected from the animals, and the levels of blood sugar, eosinophils, and serum IgE were measured. Clinical tests showed that the most potent stimulator of the immune system was the pollen extract, followed by the petal extract of middle-aged plants and old petal extract. In addition, electrophoretic profiles revealed approximately six specific protein bands that ranged from 15 to 85 kDa in the soluble pollen protein fraction, four protein bands between 27 and 85 kDa in the soluble fraction of middle-aged petal proteins, and approximately three faint protein bands between 45 and 85 kDa in the soluble protein fraction of old petals.

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“…Skin prick tests of patients with allergy symptoms (asthma, rhinitis, and dermatitis) in Suwon, Korea during 1999-2008 showed that approximately 20.5% of the patients were sensitized with tree pollens including oak 5. Oak is the dominant tree species in Korea, and its pollen has the highest sensitivity rate of all allergenic tree species in Korea 6. Therefore, oak pollen is a major factor influencing the number of daily hospital visits and medication use in Korea.…”

Section: Introductionmentioning

confidence: 99%

Deep Neural Network-Based Concentration Model for Oak Pollen Allergy Warning in South Korea

Seo

Kim

Cho

et al. 2020

Allergy Asthma Immunol Res

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PurposeOak is the dominant tree species in Korea. Oak pollen has the highest sensitivity rate among all allergenic tree species in Korea. A deep neural network (DNN)-based estimation model was developed to determine the concentration of oak pollen and overcome the shortcomings of conventional regression models.MethodsThe DNN model proposed in this study utilized weather factors as the input and provided pollen concentrations as the output. Weather and pollen concentration data were used from 2007 to 2016 obtained from the Korea Meteorological Administration pollen observation network. Because it is difficult to prevent over-fitting and underestimation by using a DNN model alone, we developed a bootstrap aggregating-type ensemble model. Each of the 30 ensemble members was trained with random sampling at a fixed rate according to the pollen risk grade. To verify the effectiveness of the proposed model, we compared its performance with those of models of regression and support vector regression (SVR) under the same conditions, with respect to the prediction of pollen concentrations, risk levels, and season length.ResultsThe mean absolute percentage error in the estimated pollen concentrations was 11.18%, 10.37%, and 5.04% for the regression, SVR and DNN models, respectively. The start of the pollen season was estimated to be 20, 22, and 6 days earlier than that predicted by the regression, SVR and DNN models, respectively. Similarly, the end of the pollen season was estimated to be 33, 20, and 9 days later that predicted by the regression, SVR and DNN models, respectively.ConclusionsOverall, the DNN model performed better than the other models. However, the prediction of peak pollen concentrations needs improvement. Improved observation quality with optimization of the DNN model will resolve this issue.

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Pollen allergy plants in Korea

Cited by 15 publications

References 36 publications

The Removal Efficiencies of Several Temperate Tree Species at Adsorbing Airborne Particulate Matter in Urban Forests and Roadsides

The Removal Efficiencies of Several Temperate Tree Species at Adsorbing Airborne Particulate Matter in Urban Forests and Roadsides

Comparison of Allergenicity of Mature Pollen Grains and Petals in Two Ontogenic Stages in Cytisus scoparius L.

Deep Neural Network-Based Concentration Model for Oak Pollen Allergy Warning in South Korea

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