[Stromules-like protrusions of the membrane environment of plastids in the root cells]

The results of visualization of the stromules-like protrusions of the membrane environment of plastids in the root cells with the help of an electronic microscope are submitted. The cases of occurrence of long narrow protrusion of the external membrane with more short protrusion of the internal membrane of plastid environment inside it are discussed. The possible role of cytoskeleton and plastoskeleton in formation, accordingly, of "external" and "internal" protrusions is considered. The conclusion that the structure and functions of stromules in plant cells should be considered in unity with the structure and functions of the endoplasmic reticulum internal space is made.