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- Title
Membrane Functions and Tolerance to Aromatic Hydrocarbon Fungitoxicants in Conidia of Fusarium solani.
- Authors
Georgopoulos, S. G.; Zafiratos, Catherine; Georgiadis, Eugenia
- Abstract
With the use of 32P-labeled phosphate and 42K2CO3 the effect of diphenyl on permebility and uptake properties of the cytoplasmic membrane in wild type and diphenyl-tolerant mutant conidia of Fusarium solani f. cucurbitae was studied. No general damage to the membrane with unspecific leakage of cell constituents was demonstrated under conditions in which diphenyl prevents germination of wild type conidia. The fresh conidia do not require exogenous supply of energy for the uptake of phosphate or of potassium. In the wild type the entry of 32P is inhibited but that of 42K strikingly stimulated by diphenyl. Independently of the tolerant mutant gene present, the mutant conidia are significantly less sensitive to the phosphate uptake inhibition and not affected at all by diphenyl with respect to the uptake of potassium. The latter difference from the wild type seems to indicate genetic control of some property of the potassium transport system in this fungus.
- Subjects
FUSARIUM; POTASSIUM; ORGANIC compounds; CELL membranes; PLANT physiology; SEED viability
- Publication
Physiologia Plantarum, 1967, Vol 20, Issue 2, p373
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.1967.tb07177.x