Tohoku University · Environmental Science
Professor Kengo Kubota's research lab specializes in environmental microbiology, with a focus on advanced molecular techniques for detecting and characterizing microbial communities in complex ecosystems. The lab pioneers the development and application of fluorescence in situ hybridization (FISH) technologies, particularly CARD-FISH, to enhance the sensitivity and specificity of rRNA and functional gene detection in environmental samples. Their work also extends to natural product chemistry, including the isolation and structural elucidation of bioactive compounds such as quassinoids from plant sources. The integration of molecular microbiology with environmental and pharmaceutical chemistry defines the lab’s interdisciplinary approach.
Figures are computed from collected data and may differ slightly.
Fluorescence in situ hybridization (FISH) has become a standard technique in environmental microbiology. More than 20 years have passed since this technique was first described, and it is currently used for the detection of ribosomal RNA, messenger RNA, and functional genes encoded on chromosomes. This review focuses on the advancement and applications of FISH combined with catalyzed reporter deposition (CARD, also known as tyramide signal amplification or TSA), in the detection of environmental
Low signal intensity due to poor probe hybridization efficiency is one of the major drawbacks of rRNA-targeted in situ hybridization. There are two major factors affecting the hybridization efficiency: probe accessibility and affinity to the targeted rRNA molecules. In this study, we demonstrate remarkable improvement in in situ hybridization efficiency by applying locked-nucleic-acid (LNA)-incorporated oligodeoxynucleotide probes (LNA/DNA probes) without compromising specificity. Fluorescently
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTTwo New Quassinoids, Ailantinols A and B, and Related Compounds from Ailanthus altissimaKengo Kubota, Narihiko Fukamiya, Tomomi Hamada, Masayoshi Okano, Kiyoshi Tagahara, and Kuo-Hsiung LeeView Author Information Department of Interdisciplinary Studies of Natural Environment, Faculty of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima 739, Faculty of Pharmaceutical Sciences, Kobe Pharmaceutical University, Kobe 658, Japan, and Natural
Eukaryotic communities in aerobic wastewater treatment processes are well characterized, but little is known about them in anaerobic processes. In this study, abundance, diversity and morphology of eukaryotes in anaerobic sludge digesters were investigated by quantitative real-time PCR (qPCR), 18S rRNA gene clone library construction and catalyzed reporter deposition-fluorescence in situ hybridization (CARD-FISH). Samples were taken from four different anaerobic sludge digesters in Japan. Result
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