plastonema

English

Etymology

From plasto- +‎ -nema.

Noun

plastonema (plural plastonemas)

1. A filament the surrounds a plastosome (organelle).
   • 1930, Proceedings of the National Academy of Sciences of the United States of America, page 537:

     The shape of the plastonema and its relation to the plastosome appear clearly in figures 1, 2, and 3.

   • 1933, Jacob Richard Schramm, Biological Abstracts - Volume 7, page 256:

     The plastid is composed of 2 structures, a filament or plastonema, partially surrounding a lighter staining plastosome.

   • 1961, University of California, Davis, Summaries of Dissertations Submitted in Partial Satisfaction of the Requirements for the Degree of Doctor of Philosophy:

     The proplastid of I. howellii is a flattened structure that is differentiated into a plastonema and a plastosome. Lamellae and starch granules appear first in the plastonema and later in the plastosome.