黄砂発生源におけるバイオエアロゾル拡散に関する研究

• 小林 史尚

  金沢大学自然計測応用研究センター

• 柿川 真紀子

  金沢大学自然計測応用研究センター

• 山田 丸

  金沢大学大学院自然科学研究科

• 陳 彬

  中国科学院大気物理研究所

• 石 廣玉

  中国科学院大気物理研究所

• 岩坂 泰信

  金沢大学自然計測応用研究センター

書誌事項

タイトル別名

• Study on Atmospheric Diffusion of Bioaerosols in a KOSA Source Region
• コウサ ハッセイゲン ニ オケル バイオエアロゾル カクサン ニ カンスル ケンキュウ

抄録

In order to clarify the behavior of bioaerosols diffusing in the atmosphere with KOSA (yellow sand) , we attempted to identify the bioaerosols in the atmospheric mixed layer over the KOSA source region, Dunhuang, China. Bioaerosols were collected at 50-100 m (using a tethered balloon) and at 10 m above the ground, and microorganisms, as the source of bioaerosols, were collected from desert sand. The bioaerosols were cultivated immediately after the collection at the Dunhuang City meteorological station. 20 strains of isolates were grouped into three major categories according to the morphology and physiological characteristics: Gram-positive rod (15 strains) , Gram-negative rod (3 strains) , and Gram-positive cocci (2 strains) . The 500-bp 16S rDNA partial sequences of 7 strains isolated from the samples collected 50-100 and 10 m above the ground showed identity. Bioaerosols appear to rise in the atmospheric mixed layer from near the ground to the upper ground with KOSA. The results of a homology search by 16S rDNA or 18S rDNA sequences of isolates in DNA databases (GenBank, DDBJ, and EMBL) revealed that bioaerosols in the atmospheric mixed layer over the KOSA source region contain Bacillus cereus (50-100 and 10 m above the ground) , Rhodosporidium sphaerocarpum (50-100 m above the ground) , Candida parapsilosis (10 m above the ground) , Pantoea agglomerans (10 m above the ground) , and Enterobacter endosymbiont (10 m above the ground) and that microorganisms from the sand were Bacillus subtilis and Bacillus atrophaeus. Although Bacillus cereus isolated from the samples collected 50-100 and 10 m above the ground was a kind of food spoilage or pathogenic bacterium, our findings indicate that the KOSA bioaerosol diffusion may influence human and natural environments.

収録刊行物

• エアロゾル研究

  エアロゾル研究 22 (3), 218-227, 2007

  日本エアロゾル学会

キーワード

• Bioaerosol
• KOSA
• Identification
• Morphology and Physiological Characteristics
• 16S rDNA

詳細情報

• CRID: 1390001204343751936
• NII論文ID: 10021918588
• NII書誌ID: AN10041511
• DOI: 10.11203/jar.22.218
• COI: 1:CAS:528:DC%2BD2sXhtFCis7%2FN
• ISSN: 1881543X
• ISSN: 09122834
• NDL書誌ID: 8924626
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8924626
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可