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Label-free imaging and analysis of subcellular parts of a living diatom cylindrotheca sp. using optical diffraction tomography
- Source :
- MethodsX, Vol 7, Iss, Pp 100889-(2020), MethodsX
- Publication Year :
- 2020
- Publisher :
- Elsevier, 2020.
-
Abstract
- Highlights • Subcellular parts of a living diatom cell was well visualized by digital holographic microscope. • Subcellular parts could be identified as differences of refractive indexes. • The observation was achieved without any pre-treatment of the living cell.<br />Optical diffraction tomography is an emerging label-free microscopic technique with its capability of label-free, quantitative, and rapid imaging of biological samples. In this work, we present the imaging and analysis of a living diatom Cylindrotheca sp. in seawater without using any pretreatment such as fluorescence staining. The 3D refractive index (RI) of a living diatom cell was measured, to which quantitative image analysis was perform to investigate subcellular parts of the diatom. Each part of the cell was well distinguished as RI values and distributions. From the analysis, RI values of frustules, protoplasm, vacuole, and chloroplast were estimated to be in the range of 1.352−1.388, 1.363−1.381, 1.388−1.395, and 1.403−1.436, respectively. Our results suggest that the present method will be a powerful tool not only for observing diatom cells but also for studying various cells and mesoscopic materials.•Subcellular parts of a living diatom cell was well visualized by digital holographic microscope.•Subcellular parts could be identified as differences of refractive indexes.•The observation was achieved without any pre-treatment of the living cell.<br />Graphical abstract Image, graphical abstract
- Subjects :
- Optical diffraction
Clinical Biochemistry
Digital holographic microscope (DHM)
Living cell
010501 environmental sciences
01 natural sciences
03 medical and health sciences
Agricultural and Biological Science
Photorefractive indexes (RI)
Cylindrotheca sp
Quantitative phase imaging (QPI)
lcsh:Science
030304 developmental biology
0105 earth and related environmental sciences
Label free
0303 health sciences
biology
Chemistry
Holotomography (HT)
Rapid imaging
fungi
Optical diffraction tomography (ODT)
Diatom
biology.organism_classification
Protoplasm
Medical Laboratory Technology
Biophysics
lcsh:Q
Tomography
Subjects
Details
- Language :
- English
- ISSN :
- 22150161
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- MethodsX
- Accession number :
- edsair.doi.dedup.....270340bf3c51bbe3822265fd1b641e8d