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Ultrastructure of plastids in normal and variegated leaves in Abutilon striatum

, : Ultrastructure of plastids in normal and variegated leaves in Abutilon striatum. Cytologia 31(4): 452-456

A. striatum having white-margined leaves was studied with light and electron microscopes. The white margin tissue was less thick than the normal green part and to lack the palisade mesophyll layer under the light microscope. Electron microscopic studies indicated great alterations occurred within the plastids, at the white-margined portion of the leaf blade. Three major alterations were disclosed: the absence of grana, the abnormality of the lamellar system, the occurrence of vacuole-like circular bodies. The causes of these were thought to be due to a destruction of the lamellar system by vacuolization following the termination of the differentiation of grana.


DOI: 10.1508/cytologia.31.452

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