Analyses of the dynamics and adaptability of bioaerosols in the atmosphere of Toyama Prefecture, Japan

2015 Fiscal Year Final Research Report

• Project/Area Number: 25340055
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental impact assessment
• Research Institution: University of Toyama
• Principal Investigator: TANAKA DAISUKE 富山大学, 大学院理工学研究部(理学), 教授 (40360804)
• Co-Investigator(Kenkyū-buntansha): KAGAYA Shigehiro 富山大学, 大学院理工学研究部(工学), 教授 (50272894) ; NAKAMURA Shogo 富山大学, 大学院理工学研究部(理学), 教授 (60134996) ; SAKATOKU Akihiro 富山大学, 大学院理工学研究部(理学), 助教 (20713142)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 大気 / バイオエアロゾル / 細菌 / 真菌 / 微生物群集構造 / 定量 / 動態 / 環境適応能

Outline of Final Research Achievements

To characterize airborne bacterial and eukaryotic communities, the DGGE analysis of 16S rRNA and 18S rRNA genes amplified by PCR was performed for air samples collected at a suburban site (University of Toyama) and a high-altitude site (Mt. Jodo) in Toyama. The airborne bacterial communities were significantly different between suburban and high-altitude sites. In contrast, the eukaryotic communities appeared to be similar between the two sites. Moreover, three red-pigmented bacterial isolates from air showed resistance to ultraviolet (UV-B and UV-C), desiccation, and hydrogen peroxide. These bacteria could have a built-in advantage for survival in the atmosphere.

Free Research Field

環境影響評価