Characteristics of airborne pollen in Incheon and Seoul (2015-2016)

So, Hye Ju; Moon, Soon Jeong; Hwang, Seon Yeong; Kim, Jeong Hee; Jang, Hae Ji; Jo, Jung Heum; Sung, Tae Jung; Lim, Dae Hyun

doi:10.5415/apallergy.2017.7.3.138

Cited by 11 publications

(5 citation statements)

References 12 publications

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“…Pinus was the most abundant genus (Fig. 2b), consistent with previous microscopy-based studies in Korea (Jung and Choi, 2013;So et al, 2017). However, DNA-based analysis showed that Pinus comprised 87% of the total plant assemblage (Fig.…”

Section: Discussionsupporting

confidence: 89%

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Plant assemblages in atmospheric deposition

Dong¹,

Woo²,

Yamamoto³

2019

Preprint

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<p><strong>Abstract.</strong> Plants disperse spores, pollen, and fragments into the atmosphere. The emitted plant particles return to the pedosphere by sedimentation (dry deposition) and/or by precipitation (wet deposition) and constitute part of the global cycle of substances. However, little is known regarding the taxonomic diversities and flux densities of plant particles deposited from the atmosphere. Here, plant assemblages were examined in atmospheric deposits collected in Seoul in South Korea. A custom-made automatic sampler was used to collect dry and wet deposition samples for which plant assemblages and quantities were determined using high-throughput sequencing and quantitative PCR with universal plant-specific primers targeting the internal transcribed spacer 2 (ITS2) region. Dry deposition was dominant for atmospheric deposition of plant particles (87&#8201;%). The remaining 13&#8201;% was deposited by precipitation, i.e., wet deposition, via rainout (in-cloud scavenging) and/or washout (below-cloud scavenging). Plant assemblage structures did not differ significantly between dry and wet deposition, indicating that washout, which is likely taxon-independent, predominated rainout, which is likely taxon-dependent, for wet deposition of atmospheric plant particles. A small number of plant genera were detected only in wet deposition, indicating that they might be specifically involved in precipitation through acting as nucleation sites in the atmosphere. Future interannual monitoring will control for the seasonality of atmospheric plant assemblages observed at our sampling site. Future global monitoring is also proposed to investigate geographical differences and investigate whether endemic species are involved in plant-mediated bioprecipitation in regional ecological systems.</p>

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Section: Discussionsupporting

confidence: 89%

“…However, DNA-based analysis showed that Pinus comprised 87% of the total plant assemblage (Fig. 2b), higher than the contributions estimated by microscopy-based analysis (42-72%) (Jung and Choi, 2013;So et al, 2017). This difference might be due to between-study variabilities in local floral and meteorological characteristics.…”

Section: Discussionmentioning

confidence: 78%

Plant assemblages in atmospheric deposition

Dong¹,

Woo²,

Yamamoto³

2019

Preprint

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“…Seasonal variation of pollen concentrations can be altered due to climate change, landuse change and planting of street trees in the city, especially in the magnitude of pollen concentrations. [24][25][26][27] The seasonal variation indicates fluctuation in the pollen concentrations between seasons. It is, therefore, essential to update the pollen calendar using recent data.…”

Section: Introductionmentioning

confidence: 99%

Allergenic Pollen Calendar in Korea Based on Probability Distribution Models and Up-to-Date Observations

Shin

Han

Cho

et al. 2020

Allergy Asthma Immunol Res

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The pollen calendar is the simplest forecasting method for pollen concentrations. As pollen concentrations are liable to seasonal variations due to alterations in climate and land-use, it is necessary to update the pollen calendar using recent data. To attenuate the impact of considerable temporal and spatial variability in pollen concentrations on the pollen calendar, it is essential to employ a new methodology for its creation. Methods: A pollen calendar was produced in Korea using data from recent observations, and a new method for creating the calendar was proposed, considering both risk levels and temporal resolution of pollen concentrations. A probability distribution was used for smoothing concentrations and determining risk levels. Airborne pollen grains were collected between 2007 and 2017 at 8 stations; 13 allergenic pollens, including those of alder, Japanese cedar, birch, hazelnut, oak, elm, pine, ginkgo, chestnut, grasses, ragweed, mugwort and Japanese hop, were identified from the collected grains. Results: The concentrations of each pollen depend on locations and seasons due to large variability in species distribution and their environmental condition. In the descending order of concentration, pine, oak and Japanese hop pollens were found to be the most common in Korea. The pollen concentrations were high in spring and autumn, and those of oak and Japanese hop were probably the most common cause of allergy symptoms in spring and autumn, respectively. High Japanese cedar pollen counts were observed in Jeju, while moderate concentrations were in Jeonju, Gwangju and Busan. Conclusions: A new methodology for the creation of a pollen calendar was developed to attenuate the impact of large temporal and spatial variability in pollen concentrations. This revised calendar should be available to the public and allergic patients to prevent aggravation of pollen allergy.

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“…allergic diseases in children. [12][13][14][15] Sensitization was mostly detected by skin prick tests, [12][13][14][15][16][17][18][19] while studies regarding sensitization using serum specific immunoglobulin E (serum specific IgE) tests are scarce. In a study by Yang et al, serum specific IgE in children with allergic rhinitis under the age of 18 years was detected by the MAST (multiple allergen simultaneous test), 18 but not by the ImmunoCap tests.…”

Section: Tree Pollen Sensitization and Cross-reaction Of Children Wit...mentioning

confidence: 99%

Tree Pollen Sensitization and Cross-Reaction of Children with Allergic Rhinitis or Asthma

Park¹,

Hwang²

2019

KMJ

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Objectives Tree pollen causes allergic rhinitis and asthma. We investigated children who diagnosed as rhinitis or asthma, living in Busan, for tree allergen sensitization, component allergen, oral allergy syndrome, and the relationship between pollen counts and allergen sensitization. Methods Pollen were collected in Busan, from January 1 to December 31, 2017, using a Rotorod sampler and enumerated using a microscope. We conducted a study of children with rhinitis or asthma at Busan St. Mary's Hospital in 2017, administered an ISAAC questionnaire, and an oral allergy syndrome survey. Serum specific Ig E tests were performed. Results Among the 57 patients, the mean age was 9.3 years. The pollen counts in decreasing order were as follows: pine, alder, oak, juniper, beech, ginkgo, and birch. For sensitization, birch and alder 35.1%, Japanese cedar 19.3%, juniper 17.5%, pine 10.5%, and Japanese cypress 8.2%. The component Ig E was tested in 27 patients. Bet v 1 had a high correlation with birch, alder, and peach. Bet v 2 showed a statistically significant correlation with all tree pollen except cypress. Bet v 4 did not have any apparent correlation. Bet v 6 had the same pattern as Bet v 2, but correlation coefficient was higher than that of Bet v 2. Oral allergy syndrome was noted in 7 patients, including peach, peanut, apple, tomato, kiwi, and sesame. Conclusions Alder and juniper are clinically important tree pollens in Busan. These pollens cause sensitization to birch and Japanese cedar by cross-reaction.

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Characteristics of airborne pollen in Incheon and Seoul (2015-2016)

Cited by 11 publications

References 12 publications

Plant assemblages in atmospheric deposition

Plant assemblages in atmospheric deposition

Allergenic Pollen Calendar in Korea Based on Probability Distribution Models and Up-to-Date Observations

Tree Pollen Sensitization and Cross-Reaction of Children with Allergic Rhinitis or Asthma

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