Does the increase in ambient CO2 concentration elevate allergy risks posed by oak pollen?

International Journal of Biometeorology
Kyu Rang KimBaek-Jo Kim

Abstract

Oak pollen is a major respiratory allergen in Korea, and the distribution of oak trees is expected to increase by ecological succession and climate change. One of the drivers of climate change is increasing CO2, which is also known to amplify the allergy risk of weed pollen by inducing elevated allergenic protein content. However, the impact of CO2 concentration on tree pollen is not clearly understood due to the experimental difficulties in carrying out extended CO2 treatment. To study the response of pollen production of sawtooth oak trees (Quercus acutissima) to elevated levels of ambient CO2, three open-top chambers at the National Institute of Forest Science in Suwon, Korea were utilized with daytime (8 am-6 pm) CO2 concentrations of ambient (× 1.0, ~ 400 ppm), × 1.4 (~ 560 ppm), and × 1.8 (~ 720 ppm) treatments. Each chamber had three sawtooth oak trees planted in September 2009. One or two trees per chamber matured to bloom in 2016. Five to six catkins were selected per tree and polyethylene bags were attached to collect pollen grains. The total number of catkins per tree was counted and the number and weight of pollen grains per catkin were measured. Oak allergen-Que a 1 (Allergon Co., Uppsala, Sweden)-was extracted and...Continue Reading

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Citations

Jul 9, 2020·Allergy, Asthma & Immunology Research·Lewis H Ziska
Feb 10, 2021·Proceedings of the National Academy of Sciences of the United States of America·William R L AndereggLewis Ziska
Aug 8, 2021·Global Change Biology·Jesús RojoJeroen Buters
Sep 4, 2021·Allergy·Kari C NadeauCezmi A Akdis
Nov 20, 2021·Revue des maladies respiratoires·M Thibaudon, J-P Besancenot

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