Portrait of the trebouxiophyte,Microthamnion strictissimum (Rabenhorst). The thalli of this filamentous alga are uniseriate (cells in a single row) and have a more distinguishable main axis than the similar M. kuetzingianum. Branches originate as lateral outgrowths from cells. Thalli are attached to the substrate by a basal cell with a small bulbous holdfast. Cells are cylindrical and of the same diameter. Terminal cells taper to a blunt tip. The single parietal plate-like chloroplast lacks a pyrenoid. Reproduction is by biflagellate zoospores which escape from the parent cell through a lateral rupture of the cell wall. One of the distinguishing features of trebouxiophytes is metacentric mitosis in which centrioles are located near the metaphase plate of the chromosomes rather than at the spindle poles. Other characteristics include formation of microtubules parallel to the dividing cell wall during cytokinesis (phycoplast)and a cruciate arrangement of flagellar roots with the basal bodies offset in a counterclockwise fashion on electron microscopy. Collected from a freshwater dredge pond near Idaho City, Idaho. June 2005.Phase contrast.
Portrait of the trebouxiophyte,Microthamnion strictissimum (Rabenhorst). The thalli of this filamentous alga are uniseriate (cells in a single row) and have a more distinguishable main axis than the similar M. kuetzingianum. Branches originate as lateral outgrowths from cells. Thalli are attached to the substrate by a basal cell with a small bulbous holdfast. Cells are cylindrical and of the same diameter. Terminal cells taper to a blunt tip. The single parietal plate-like chloroplast lacks a pyrenoid. Reproduction is by biflagellate zoospores which escape from the parent cell through a lateral rupture of the cell wall. One of the distinguishing features of trebouxiophytes is metacentric mitosis in which centrioles are located near the metaphase plate of the chromosomes rather than at the spindle poles. Other characteristics include formation of microtubules parallel to the dividing cell wall during cytokinesis (phycoplast)and a cruciate arrangement of flagellar roots with the basal bodies offset in a counterclockwise fashion on electron microscopy. Collected from a freshwater dredge pond near Idaho City, Idaho. June 2005.DIC.
Microthamnion (mike-row-tham-knee-on), is a branching filamentous green alga. With cellulosic cell wall, plastids with chlorophylls a and b giving the plastids a green colour. Phase contrast.
Microthamnion strictissimum Specimen from a tropical freshwater aquarium. Scale bar indicates 25 µm. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with MFT camera Olympus OM-D E-M5 II.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Tropical freshwater aquarium Latitude: 54.3018013 Longitude: 10.07120132 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus einem Süßwasseraquarium für tropische Fische. Mikrotechnik: Zeiss Axioplan Kamera: Olympus OM-D E-M5 II. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.
Microthamnion strictissimum Specimen from a tropical freshwater aquarium. Scale bar indicates 50 µm. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with MFT camera Olympus OM-D E-M5 II.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Tropical freshwater aquarium Latitude: 54.3018013 Longitude: 10.07120132 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 50 µm. Probe aus einem Süßwasseraquarium für tropische Fische. Mikrotechnik: Zeiss Axioplan Kamera: Olympus OM-D E-M5 II. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.
Microthamnion strictissimum Specimen from a tropical freshwater aquarium. Scale bar indicates 25 µm. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with MFT camera Olympus OM-D E-M5 II.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Tropical freshwater aquarium Latitude: 54.3018013 Longitude: 10.07120132 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus einem Süßwasseraquarium für tropische Fische. Mikrotechnik: Zeiss Axioplan Kamera: Olympus OM-D E-M5 II. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.