Fusicoccin-induced growth and hydrogen ion excretion of Avena coleoptiles: Relation to auxin responses
- 1 January 1976
- journal article
- Published by Springer Nature in Planta
- Vol. 128 (3) , 201-206
- https://doi.org/10.1007/bf00393229
Abstract
The fungal toxin fusicoccin (FC) induces both rapid cell elongation and H+-excretion in Avena coleoptiles. The rates for both responses are greater with FC than with optimal auxin, and in both cases the lag after addition of the hormone is less with FC. This provides additional support for the acid-growth theory. The FC responses resemble the auxin responses in that they are inhibited by a range of metabolic inhibitors, but the responses differ in three ways. First auxin, but not FC, requires continual protein synthesis for its action. The auxin-induced H+-excretion is inhibited by water stress or by low external pH, while the FC-induced H+-excretion is much less sensitive to either. It is concluded that auxin-induced and FC-induced H+-excretion may occur via different mechanisms.Keywords
This publication has 25 references indexed in Scilit:
- Fusicoccin-induced, K+-stimulated proton secretion and acid-induced growth of apical root segmentsPlant Science Letters, 1976
- Evidence for the coupling of proton extrusion to K+ uptake in pea internode segments treated in fusicoccin or auxinPlant Science Letters, 1974
- Transmembrane potential increase induced by auxin, benzyladenine and fusicoccin. Correlation with proton extrusion and cell enlargementPlant Science Letters, 1974
- THE ACTION OF FUSICOCCIN ON STOMATAL GUARD CELLS AND SUBSIDIARY CELLSNew Phytologist, 1974
- Correlation between proton extrusion and stimulation of cell enlargement effects of fusicoccin and of cytokinins on leaf fragments and isolated cotyledonsPlant Science Letters, 1974
- Correlation between cell enlargement in pea internode segments and decrease in the pH of the medium of incubation: II. Effects of inhibitors of respiration, oxidative phosphorylation and protein synthesisPlant Science Letters, 1973
- Correlation between cell enlargement in pea internode segments and decrease in the pH of the medium of incubationPlant Science Letters, 1973
- K+ Uptake of Guard Cells stimulated by FusicoccinNature, 1972
- Comparison between some effects of fusicoccin and indole-3-acetic acid on cell enlargement in various plant materialsPhysiological Plant Pathology, 1972
- Effect of Indole-3-acetic Acid on Membrane Potentials of Oat Coleoptile CellsPlant Physiology, 1970