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A Comparative Study of the Storage Carbohydrate Granules from Euglena (Euglenida) and Pavlova (Prymnesiida) 1 , 2
Author(s) -
KISS JOHN Z.,
TRIEMER RICHARD E.
Publication year - 1988
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1988.tb04331.x
Subject(s) - euglena , granule (geology) , euglena gracilis , microfibril , carbohydrate , electron microscope , chemistry , chloroplast , materials science , physics , biochemistry , optics , cellulose , composite material , gene
The storage carbohydrate granules from Euglena and Pavlova were compared by light and electron microscopy. Freezeetch studies demonstrated that while both types of granules are crystalline, they have different structures. The elemental microfibril of the euglenoid granule measures 4 nm, and the elemental striation of the granule from Pavlova is 22 nm. The granules each have a unique X‐ray diffraction pattern. The storage carbohydrate granules from Pavlova are not the same as paramyton, and the term “paramylon” should be reserved for the euglenoid storage carbohydrate.