Journal of Experimental Botany, Vol 49, 879-884, Copyright © 1998 by Oxford University Press
A Fennell and A Markhart
Root hydraulic conductance of many species is substantially reduced by
exposure to low temperatures. The objective of this research was to
investigate the decrease and recovery of root hydraulic conductivity in
spinach (Spinacia oleracea L.) root systems upon
exposure to low temperature. Root hydraulic conductivity
(Lp) was determined for detached whole root systems as
the slope of the flux and an applied pressure gradient. Water flux
(Jv), of root systems grown at 20
ARTICLES
Rapid acclimation of root hydraulic conductivity to low temperature
Department of Horticultural Science and Landscape Architecture, University of Minnesota, St Paul, MN 55108, USA; Present and corresponding address: Horticulture, Forestry, Landscape and Parks Department, South Dakota State University, Brookings, SD 57007, USA;
C, decreased immediately upon exposure to 5C. After 2-5 h Jv recovered and
reached a stable value after 12 h exposure to 5°C. In separate
experiments, the root Lp of plants acclimated for 7 d
at 5°C was 125% greater than that of isolated root systems
acclimated for 12 h at 5°C. Lp of plants grown
and measured at 5°C was about 50% of the Lp of
plants grown and measured at 20°C. The rapid acclimation to low
temperatures observed in detopped root systems was also indicated in intact
plants at 20/5°C (shoot/root temperatures) using mass flow
porometry. Acclimation of the root system after exposure to 5°C was
apparent by recovery of stomatal opening. These results indicate that
spinach root systems have the ability to acclimate rapidly to changes in
temperature and to continue acclimating during prolonged exposure to low
temperature.Keywords: Spinacia
oleracea L., cold acclimation, stomatal resistance, mass flow
porometry.
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  A. Minami, M. Fujiwara, A. Furuto, Y. Fukao, T. Yamashita, M. Kamo, Y. Kawamura, and M. Uemura Alterations in Detergent-Resistant Plasma Membrane Microdomains in Arabidopsis thaliana During Cold Acclimation Plant Cell Physiol., February 1, 2009; 50(2): 341 - 359. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G.-W. Li, M.-H. Zhang, W.-M. Cai, W.-N. Sun, and W.-A. Su Characterization of OsPIP2;7, a Water Channel Protein in Rice Plant Cell Physiol., December 1, 2008; 49(12): 1851 - 1858. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. H. Lee, G. C. Chung, and E. Steudle Gating of aquaporins by low temperature in roots of chilling-sensitive cucumber and chilling-tolerant figleaf gourd J. Exp. Bot., March 1, 2005; 56(413): 985 - 995. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. Aroca, G. Amodeo, S. Fernandez-Illescas, E. M. Herman, F. Chaumont, and M. J. Chrispeels The Role of Aquaporins and Membrane Damage in Chilling and Hydrogen Peroxide Induced Changes in the Hydraulic Conductance of Maize Roots Plant Physiology, January 1, 2005; 137(1): 341 - 353. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. H. Lee, A. P. Singh, and G. C. Chung Rapid accumulation of hydrogen peroxide in cucumber roots due to exposure to low temperature appears to mediate decreases in water transport J. Exp. Bot., August 1, 2004; 55(403): 1733 - 1741. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Melkonian, L.-X. Yu, and T. L. Setter Chilling responses of maize (Zea mays L.) seedlings: root hydraulic conductance, abscisic acid, and stomatal conductance J. Exp. Bot., August 1, 2004; 55(403): 1751 - 1760. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. Vernieri, A. Lenzi, M. Figaro, F. Tognoni, and A. Pardossi How the roots contribute to the ability of Phaseolus vulgaris L. to cope with chilling-induced water stress J. Exp. Bot., November 1, 2001; 52(364): 2199 - 2206. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. Cochard, R. Martin, P. Gross, and M. B. Bogeat-Triboulot Temperature effects on hydraulic conductance and water relations of Quercus robur L. J. Exp. Bot., July 1, 2000; 51(348): 1255 - 1259. [Abstract] [Full Text] [PDF]
|
|