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Publication Type J
Authors Kurkova, E. B., Y. V. Balnokin and N. A. Myasoedov
Title Some Characteristics of Cell Ultrastructure and Accumulation of Na+ and Cl- in Tissues of the Halophyte Petrosimonia triandra
Source Soviet Plant Physiology
Author Keywords salinity; accumulation of na+ in tissues; pinocytotic invaginations; multivesicular bodies salt tolerance
Abstract To clarify ultrastructural characteristics of cells in the salt-accumulating halophyte Petrosimonia triandra, we used plants that grew up under natural dwelling conditions (on territory of the former bottom of the Aral Sea) and ones grown in a hothouse at different levels of Na+ content in the soil. A correlation is discernible between content of Na+ in the soil, its accumulation in the leaf, and formation of pinocytotic invaginations (PI) and multivesicular bodies (MVB) "floating" in the vacuole. Pinocytotic invaginations were also encountered in root cells-both under salinity and in the control-but their size and occurrence were significantly less than in analogous structures of leaf cells. Moreover, MVB were for all practical purposes not encountered in root cells. It is hypothesized that PI and MVB are involved in transport of ions and their accumulation in vacuoles of leaf cells in salt-accumulating halophytes, which can be regarded as one of the possible mechanisms ensuring their high salt tolerance.
Author Address KURKOVA, EB, KA TIMIRYAZEV PLANT PHYSIOL INST,MOSCOW,USSR.
Publication Date Jan-Feb
Year Published 1992
Volume 39
Issue 1
Beginning Page 17-22
Unique Article Identifier ISI:A1992JH75500004
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