Plant Physiology 98:137-142 (1992)
© 1992 American Society of Plant Biologists
Environmental and Stress Physiology
Enhanced Sensitivity to Ethylene in Nitrogen- or Phosphate-Starved Roots of Zea mays L. during Aerenchyma Formation 1
Chuan-Jiu He2,
Page W. Morgan and
Malcolm C. Drew
Department of Horticultural Sciences, Texas A&M University, College Station, Texas 77843,
Department of Soil & Crop Sciences, Texas A&M University, College Station, Texas 77843
Adventitious roots of maize (Zea mays L. cv TX 5855), grown in a well-oxygenated nutrient solution, were induced to form cortical gas spaces (aerenchyma) by temporarily omitting nitrate and ammonium (-N), or phosphate (-P), from the solution. Previously this response was shown (MC Drew, CJ He, PW Morgan [1989] Plant Physiology 91: 266-271) to be associated with a slower rate of ethylene biosynthesis, contrasting with the induction of aerenchyma by hypoxia during which ethylene production is strongly stimulated. In the present paper, we show that aerenchyma formation induced by nutrient starvation was blocked, under noninjurious conditions, by addition of low concentrations of Ag+, an inhibitor of ethylene action, or of aminoethoxyvinyl glycine, an inhibitor of ethylene biosynthesis. When extending roots were exposed to low concentrations of ethylene in air sparged through the nutrient solution, N or P starvation enhanced the sensitivity to exogenous ethylene at concentrations as low as 0.05 microliters ethylene per liter air, promoting a more rapid and extensive formation of aerenchyma than in unstarved roots. We conclude that temporary deprivation of N or P enhances the sensitivity of ethylene-responsive cells of the root cortex, leading to cell lysis and aerenchyma.
2 Permanent address: Anhui Agriculture College, Hefei, Anhui, People's Republic of China.
1 Research supported in part by U.S. Department of Agriculture Competetive grants No. 88-37264-399 and 90-37264-5523. Texas Agriculture Experiment Station paper No. 20962.
This article has been cited by other articles:
|
|
|
|
 
P. Muhlenbock, M. Plaszczyca, M. Plaszczyca, E. Mellerowicz, and S. Karpinski
Lysigenous Aerenchyma Formation in Arabidopsis Is Controlled by LESION SIMULATING DISEASE1
PLANT CELL,
November 1, 2007;
19(11):
3819 - 3830.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
D. L. BOURANIS, S. N. CHORIANOPOULOU, C. KOLLIAS, P. MANIOU, V. E. PROTONOTARIOS, V. F. SIYIANNIS, and M. J. HAWKESFORD
Dynamics of Aerenchyma Distribution in the Cortex of Sulfate-deprived Adventitious Roots of Maize
Ann. Bot.,
May 1, 2006;
97(5):
695 - 704.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
H. Chen, I. A. Mendelssohn, B. Lorenzen, H. Brix, and S. Miao
Growth and nutrient responses of Eloecharis cellulosa (Cyperaceae) to phosphate level and redox intensity
Am. J. Botany,
September 1, 2005;
92(9):
1457 - 1466.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
E. A. Schmelz, H. T. Alborn, J. Engelberth, and J. H. Tumlinson
Nitrogen Deficiency Increases Volicitin-Induced Volatile Emission, Jasmonic Acid Accumulation, and Ethylene Sensitivity in Maize
Plant Physiology,
September 1, 2003;
133(1):
295 - 306.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
Z. Ma, T. I. Baskin, K. M. Brown, and J. P. Lynch
Regulation of Root Elongation under Phosphorus Stress Involves Changes in Ethylene Responsiveness
Plant Physiology,
March 1, 2003;
131(3):
1381 - 1390.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. C. SUBBAIAH and M. M. SACHS
Molecular and Cellular Adaptations of Maize to Flooding Stress
Ann. Bot.,
January 2, 2003;
91(2):
119 - 127.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. DORDAS, J. RIVOAL, and R. D. HILL
Plant Haemoglobins, Nitric Oxide and Hypoxic Stress
Ann. Bot.,
January 2, 2003;
91(2):
173 - 178.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. Liu, U. S. Muchhal, M. Uthappa, A. K. Kononowicz, and K. G. Raghothama
Tomato Phosphate Transporter Genes Are Differentially Regulated in Plant Tissues by Phosphorus
Plant Physiology,
January 1, 1998;
116(1):
91 - 99.
[Abstract]
[Full Text]
|
|
|
|
|
