Open AccessInfluence of some new aminophosphonates on electrical properties and stability of plasma membranes of plant cells
Author(s) -
Janusz Sarapuk,
Krzysztof Bielecki,
Ze Trela
Publication year - 2014
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.2002.026
Subject(s) - membrane , conductance , cucumis , chemistry , depolarization , electrolyte , membrane potential , efflux , cotyledon , biophysics , biochemistry , botany , biology , mathematics , electrode , combinatorics
The effect of new aminophosphonates, synthesized for potential agricultural application, on membrane potential and electrical conductance of internodal cells of Nitellopsis obtusa and their efficiency in modifying the properties of cucumber (Cucumis sativus cv "Wisconsin") cotyledon membranes was studied. They differed in substituents at the carbon and phosphorus atoms. It was found that the organophosphorous compounds caused depolarization of the membrane resting potential and increased electrical conductance of alga membranes. They also influenced chlorophyll content and efflux of electrolytes from cucumber cotyledons. The most significant effects were observed for the compound with iso-propyl substituents at the P atom. In contrast, the weakest modifier of the studied compounds was the one having phenolic substituents at that atom. The observed changes are most probably the result of direct interaction of aminophosphonates with the lipid phase of the plasma membrane and the induced structural changes in it