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Changes of Onion Epidermal Cell Permeability Due to the Treatment with Alanap
Author(s) -
FENG K. A.
Publication year - 1974
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1974.tb03142.x
Subject(s) - permeability (electromagnetism) , allium , urea , cell permeability , biophysics , chemistry , epidermis (zoology) , cell , membrane permeability , membrane , microbiology and biotechnology , biochemistry , botany , biology , anatomy
The effect of Alanap, N‐1‐naphthylphthalamic acid (NPA), on the permeability of onion ( Allium cepa ) epidermal cells was studied by means of a plasmometric method. Urea, 1,3‐dimethylurea, and water were used for the test of permeability. It was found that the treatment of onion epidermis with NPA at various concentration (5 × 10 –3 to 5 × 10 –6 M ) altered the deplasmolysis rates and the absolute permeability constants. However, NPA did not alter the osmotic value of the treated cells. It was suggested that NPA treatment altered the permeability of onion epidermal cells due to the effect of this herbicide on the plasma membrane.