TITLE

Visualizing the complex substructure of euglenid pellicle strips with SEM

AUTHOR(S)
Esson, Heather J.; Leander, Brian S.
PUB. DATE
September 2008
SOURCE
Phycologia;Sep2008, Vol. 47 Issue 5, p529
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Comparative analysis of cytoskeletal diversity within the Euglenophyceae has provided important context for understanding the phylogenetic relationships and major evolutionary transitions within the group (e.g. switches in modes of nutrition and motility). Some ultrastructural characters used in earlier cladistic analyses of euglenids involved different states for the lateral projections that extend from the frame of each pellicle strip in photosynthetic lineages. Previously, the overall structure of 'strip projections' in different lineages was (arduously) reconstructed from a series of ultra-thin sections viewed with transmission electron microscopy (TEM). In this study, we were able to determine the structure of strip projections with greater precision, and without the laborious protocols associated with TEM (e.g. ultramicrotomy), by examining disrupted pellicles from three photosynthetic euglenids (Lepocinclis fusiformis, Phacus longicauda var. tortus, and P. segretii) using scanning electron microscopy (SEM). The structure of the strip projections observed here demonstrated that either (1) previous TEM studies of the pellicle overlooked certain ultrastructural features in some taxa or (2) the (prearticular) strip projections in L. fusiformis, P. segretii, and P. longicauda var. tortus represent a novel character state that could be phylogenetically informative.
ACCESSION #
34241461

 

Related Articles

  • COMPARISON OF MICROTHRIX ULTRASTRUCTURE AND MORPHOLOGY ON THE PLEROCERCOID AND ADULT SCOLEX OF CALLIOBOTHRIUM CF. VERTICILLATUM (TETRAPHYLLIDEA: ONCHOBOTHRIIDAE). Fyler, C. A. // Journal of Parasitology;Feb2007, Vol. 93 Issue 1, p4 

    The article presents a comparative study of microthrix ultrastruture and morphology on the plerocercoid and adult scolex of Calliobothrium cf. verticillatum. Scanning electron microscopy and transmission electron microscopy has been used to investigate the microthrix morphology of the C. cf....

  • Comparative morphology and ultrastructure of the respiratory system in four species of the Opheliidae family. Belova, P.; Zhadan, A. // Biology Bulletin;Dec2014, Vol. 41 Issue 9, p752 

    Polychaetes show a remarkable diversity of the respiratory system structures. However, the ultrastructure of gills was studied only in some species from several families. The morphology and ultrastructure of the gills of Ophelia limacina, Ophelina acuminata, Euzonus arcticus, and Travisia...

  • Influence of crystal quality on the electronic properties of n-type 3C-SiC grown by low temperature low pressure chemical vapor deposition. Eickhoff, M.; Möller, H.; Stoemenos, J.; Zappe, S.; Kroetz, G.; Stutzmann, M. // Journal of Applied Physics;6/15/2004, Vol. 95 Issue 12, p7908 

    We analyze the influence of crystal quality on the electronic properties of 3C-SiC layers deposited by low-pressure chemical vapor deposition. Single crystalline films show good electronic quality and can be efficiently doped with NH3. The transition to nanocrystalline 3C-SiC, achieved by a...

  • Vibrational Spectroscopy in Electron Microscopy: New Capabilities at SuperSTEM. Nellist, Peter D. // LabAsia;Mar/Apr2015, Vol. 22 Issue 2, p48 

    The article explains the importance of developments in the field of scanning transmission electron microscopy (STEM), how the SuperSTEM Laboratory in Daresbury, England came about and the instrument it launched.

  • Scanning and transmission electron-microscopic study of the development of the podocyte in the human fetus. Hyodo, Toru; Naguro, Tomonori; Kameie, Toshio; Iino, Akihiro; Miyagawa, Ikuo // Pediatric Nephrology;1997, Vol. 11 Issue 2, p133 

    The metanephric kidneys of seven human fetuses at 11-17 weeks' gestation were examined by scanning and transmission electron microscopy in order to evaluate differentiation of glomerular podocytes. When glomeruli were in the stage of S-shaped bodies, the surface of the visceral epithelium of...

  • Prevention of micropipes and voids at β-SiC/Si(100) interfaces. Scholz, R.; Gösele, U.; Wischmeyer, F.; Niemann, E. // Applied Physics A: Materials Science & Processing;1998, Vol. 66 Issue 1, p59 

    Abstract. Chemical vapor deposition (CVD) carbonization experiments were carried out on (100) silicon substrates. Scanning and transmission electron microscopy (SEM and TEM) were used to detect and characterize the interlace defects. Conditions for preventing the formation of micropipes and...

  • Large-scale synthesis of SnO[sub 2] nanobelts. Sun, S.H.; Meng, G.W.; Wang, Y.W.; Gao, T.; Zhang, M.G.; Tian, Y.T.; Peng, X.S.; Zhang, L.D. // Applied Physics A: Materials Science & Processing;2003, Vol. 76 Issue 2, p287 

    Tin dioxide (SnO[sub 2] ) nanobelts have been successfully synthesized in bulk quantity by a simple and low-cost process based on the thermal evaporation of tin powders at 800 �C. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations reveal that the...

  • Transmission and scanning electron microscopy studies of single femtosecond- laser-pulse ablation of silicon. Borowiec, A.; MacKenzie, M.; Weatherly, G.C.; Haugen, H.K. // Applied Physics A: Materials Science & Processing;2003, Vol. 76 Issue 2, p201 

    The final state of the material resulting from laser irradiation of silicon using 130 fs pulses at 790 nm was studied using a number of techniques including scanning and transmission electron microscopies, as well as atomic force microscopy. Structural details and the level of damage to the...

  • Synthesis, characterization and magnetic properties of Co3O4 nanotubes. Xiao-Ping Shen; Hua-Juan Miao; Hui Zhao; Zheng Xu // Applied Physics A: Materials Science & Processing;Apr2008, Vol. 91 Issue 1, p47 

    Well-aligned Co3O4 nanotubes were synthesized within the nanochannels of porous anodic alumina membranes using a single-source chemical vapor deposition method. Scanning electron microscopy and transmission electron microscopy showed that the Co3O4 nanotubes are highly ordered with uniform...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics