Plant Physiology 77:190-194 (1985)
© 1985 American Society of Plant Biologists
Articles
Inhibitory Effects of Water Deficit on Maize Leaf Elongation 1
Elizabeth Van Volkenburgh and
John S. Boyer
Botany Department, University of Washington, Seattle, Washington 98195,
United States Department of Agriculture/Agricultural Research Service, Urbana, Illinois 61801
The growth rate of maize leaves has been investigated for plants grown in pots in controlled conditions and subjected to slow drying over a period of days. The elongation of leaves experiencing water deficit was inhibited primaily during the afternoon. No decrease in the turgor of the growing cells could be detected at that time. Solute concentration in the growing cells increased in tissue experiencing water deficit, but this was shown to occur after the growth rate had fallen. Calculations of the rate of solute accumulation necessary to maintain these concentrations indicated that the rate was less in slowly growing than in rapidly growing cells. The growing tissue of well-watered leaves excreted protons into the apoplastic space, but this acidification decreased in tissue exposed to water deficit. The pH of the apoplastic space correlated with the growth rate of the tissue. In vitro acidification of isolated, frozen-thawed tissue, maintained under constant tension, increased wall extensibility. The results suggest that one role of proton excretion may be to promote wall-loosening events necessary for cell enlargement, and that inhibition of this process may have reduced growth rate in leaves exposed to water deficit.
1 Supported in part by National Science Foundation Grant PCM79-09790 to J. S. B.
This article has been cited by other articles:
|
|
|
|
 
G. A. Pereyra-Irujo, L. Velazquez, L. Lechner, and L. A. N. Aguirrezabal
Genetic variability for leaf growth rate and duration under water deficit in sunflower: analysis of responses at cell, organ, and plant level
J. Exp. Bot.,
May 1, 2008;
59(8):
2221 - 2232.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
L. Fan and P. M. Neumann
The Spatially Variable Inhibition by Water Deficit of Maize Root Growth Correlates with Altered Profiles of Proton Flux and Cell Wall pH
Plant Physiology,
August 1, 2004;
135(4):
2291 - 2300.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. J. Sanchez-Blanco, P. Rodriguez, E. Olmos, M. A. Morales, and A. Torrecillas
Differences in the Effects of Simulated Sea Aerosol on Water Relations, Salt Content, and Leaf Ultrastructure of Rock-Rose Plants
J. Environ. Qual.,
July 1, 2004;
33(4):
1369 - 1375.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
S. R. Anderson, M. J. Lauer, J. B. Schoper, and R. M. Shibles
Pollination Timing Effects on Kernel Set and Silk Receptivity in Four Maize Hybrids
Crop Sci.,
March 1, 2004;
44(2):
464 - 473.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. J. Sanchez-Blanco, P. Rodriguez, M. A. Morales, and A. Torrecillas
Contrasting Physiological Responses of Dwarf Sea-Lavender and Marguerite to Simulated Sea Aerosol Deposition
J. Environ. Qual.,
November 1, 2003;
32(6):
2238 - 2244.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
L. van der Weerd, M. M.A.E. Claessens, T. Ruttink, F. J. Vergeldt, T. J. Schaafsma, and H. Van As
Quantitative NMR microscopy of osmotic stress responses in maize and pearl millet
J. Exp. Bot.,
December 1, 2001;
52(365):
2333 - 2343.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
L. E. Price, M. A. Bacon, P. C. Young, and W. J. Davies
High-resolution analysis of tomato leaf elongation: the application of novel time-series analysis techniques
J. Exp. Bot.,
September 1, 2001;
52(362):
1925 - 1932.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
B. G. Neves-Piestun and N. Bernstein
Salinity-Induced Inhibition of Leaf Elongation in Maize Is Not Mediated by Changes in Cell Wall Acidification Capacity
Plant Physiology,
March 1, 2001;
125(3):
1419 - 1428.
[Abstract]
[Full Text]
|
|
|
|
|
|
|
Y. Wu and D. J. Cosgrove
Adaptation of roots to low water potentials by changes in cell wall extensibility and cell wall proteins
J. Exp. Bot.,
September 1, 2000;
51(350):
1543 - 1553.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
T. C. Hsiao and L.-K. Xu
Sensitivity of growth of roots versus leaves to water stress: biophysical analysis and relation to water transport
J. Exp. Bot.,
September 1, 2000;
51(350):
1595 - 1616.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. A. Bacon, S. Wilkinson, and W. J. Davies
pH-Regulated Leaf Cell Expansion in Droughted Plants Is Abscisic Acid Dependent
Plant Physiology,
December 1, 1998;
118(4):
1507 - 1515.
[Abstract]
[Full Text]
|
|
|
|
|
|
|
L. Bogoslavsky and P. M. Neumann
Rapid Regulation by Acid pH of Cell Wall Adjustment and Leaf Growth in Maize Plants Responding to Reversal of Water Stress
Plant Physiology,
October 1, 1998;
118(2):
701 - 709.
[Abstract]
[Full Text]
|
|
|
|
|
