Differences of Image between Epifluorescence Microscope with Universal Infinity System BX60 and Epifluorescence Microscope BHS-RFK on the Study of the River Microbial Community stained by Acridine Orange.

  • SUGITATE TOSHIHIRO
    Laboratory of microbial ecology, Division of applied biological science, Faculty of agriculture, Tokyo University of agriculture and technology
  • MORIKAWA KAZUKO
    Laboratory of microbial ecology, Division of applied biological science, Faculty of agriculture, Tokyo University of agriculture and technology

Bibliographic Information

Other Title
  • 無限遠焦点落射蛍光顕微鏡BX60と落射蛍光顕微鏡BHS-RFKを用いたアクリジンオレンジ染色における河川細菌群集の画像の相違
  • ムゲンエンショウテンラクシャ ケイコウ ケンビキョウ BX60 ト ラクシャ ケイコウ ケンビキョウ BHS-RFK オ モチイタ アクリジンオレンジ センショク ニ オケル カセン サイキン グンシュウ ノ ガゾウ ノ ソウイ

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Description

Acridine orange direct count (AODC) of bacterial community was examined with two types of epifluorescence microscope, BX-60 (OLYMPUS OPTICAL CO., LTD.) and BHS-RFK (OLYMPUS OPTICAL CO., LTD.). When observed under the naked eye, AO-stained particles appeared clearer under the BX60 than under the BHS-RFK. This difference in the image was considered to influence the AODC containing particles of various size and shape. AODC of a bacterial pure culture did not provide significant difference when determined under the naked eye with these two epifluorescence microscopes. However, the AODC of complex communities from river water and epilithon showed difference in counting among 4 investigators. To clarify the reason for these differences, the particle image of each scope was compared with an image analyzer. Mean AO-stained particle area of BHS-RFK was larger than that of BX60, probably caused by the existence of a dim margin surrounding particles for the former system. As a result, it is not necessary to correct AODC when determined under the naked eye. However, when an image analyzer is employed to determine AODC of natural bacterial community, procedure for application should be checked carefully for newly developed microscope.

Journal

  • Microbes and Environments

    Microbes and Environments 14 (1), 19-22, 1999

    Japanese Society of Microbial Ecology / Japanese Society of Soil Microbiology / Taiwan Society of Microbial Ecology / Japanese Society of Plant Microbe Interactions / Japanese Society for Extremophiles

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