Annals of Botany 88: 967-988, 2001
© 2001 Annals of Botany Company
REVIEW |
Chloride in Soils and its Uptake and Movement within the Plant: A Review
Horticulture Research International, Wellesbourne, Warwick, CV35 9EF, UK
Received: 30 March 2001 ; Returned for revision: 27 July 2001 . Accepted: 7 August 2001
Natural inputs of chlorine (Cl) to soils come mainly from rainwater, sea spray, dust and air pollution. In addition, human practices, such as irrigation and fertilization, contribute significantly to Cl deposition. In the soil solution, Cl occurs predominantly as the chloride anion (Cl-). The Cl-anion does not form complexes readily, and shows little affinity (or specificity) in its adsorption to soil components. Thus, Cl-movement within the soil is largely determined by water flows. Chlorine is an essential micronutrient for higher plants. It is present mainly as Cl-. Chloride is a major osmotically active solute in the vacuole and is involved in both turgor- and osmoregulation. In the cytoplasm it may regulate the activities of key enzymes. In addition, Cl-also acts as a counter anion, and Cl-fluxes are implicated in the stabilization of membrane potential, regulation of intracellular pH gradients and electrical excitability. Chloride enters plants through the roots, and there is some concern over the uptake of the long-lived radionuclide36Cl, which enters into the food chain through plants. Chloride is thought to traverse the root by a symplastic pathway, and Cl-fluxes across the plasma membrane and tonoplast of root cells have been estimated. These fluxes are regulated by the Cl-content of the root. Chloride is mobile within the plant. The Cl-concentrations of xylem and phloem saps have been determined and Cl-fluxes through the xylem and phloem have been modelled. Measurements of transmembrane voltages and Cl-activities in cellular compartments suggest (1) that active Cl-transport across the plasma membrane dominates Cl-influx to root cells at low Cl-concentrations in the soil solution and that passive Cl-influx to root cells occurs under more saline conditions, and (2) that both active and passive Cl-transport occurs at the tonoplast. Electrophysiological studies have demonstrated the presence of an electrogenic Cl-/2H+symporter in the plasma membrane of root-hair cells and Cl-channels mediating either Cl-influx or Cl-efflux across the plasma membrane. Similarly, there is both biochemical and electrophysiological evidence that Cl-channels mediate Cl-fluxes in either direction across the tonoplast and that a Cl-/nH+antiport mediates Cl-influx to the vacuole. This article reviews the availability of Cl-in the soil, the roles and distribution of Cl-within the plant, the magnitude of Cl-fluxes across membranes and between tissues, the mechanisms of Cl-transport across membranes and the electrical characteristics and molecular biology of Cl-channels. Copyright 2001 Annals of Botany Company
Review, Arabidopsis thaliana, channel, chloride (Cl-), influx, phloem, plasma membrane, radiochlorine (36Cl), soil, tonoplast, transport, uptake, xylem
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  H. Evelin, R. Kapoor, and B. Giri Arbuscular mycorrhizal fungi in alleviation of salt stress: a review Ann. Bot., December 1, 2009; 104(7): 1263 - 1280. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 B. A. Goodrich, R. D. Koski, and W. R. Jacobi Monitoring Surface Water Chemistry Near Magnesium Chloride Dust Suppressant Treated Roads in Colorado J. Environ. Qual., October 29, 2009; 38(6): 2373 - 2381. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 F. Zeng, H. Yan, and S. K. Arndt Leaf and whole tree adaptations to mild salinity in field grown Populus euphratica Tree Physiol, October 1, 2009; 29(10): 1237 - 1246. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. Sun, S. Chen, S. Dai, R. Wang, N. Li, X. Shen, X. Zhou, C. Lu, X. Zheng, Z. Hu, et al. NaCl-Induced Alternations of Cellular and Tissue Ion Fluxes in Roots of Salt-Resistant and Salt-Sensitive Poplar Species Plant Physiology, February 1, 2009; 149(2): 1141 - 1153. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. Lv, K. Zhang, Q. Gao, L. Lian, Y. Song, and J. Zhang Overexpression of an H+-PPase Gene from Thellungiella halophila in Cotton Enhances Salt Tolerance and Improves Growth and Photosynthetic Performance Plant Cell Physiol., August 1, 2008; 49(8): 1150 - 1164. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. Pelletier, G. F. Tremblay, G. Belanger, M. H. Chantigny, P. Seguin, R. Drapeau, and G. Allard Nutritive Value of Timothy Fertilized with Chloride or Chloride-Containing Liquid Swine Manure J Dairy Sci, February 1, 2008; 91(2): 713 - 721. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 N. Teakle, T. Flowers, D Real, and T. Colmer Lotus tenuis tolerates the interactive effects of salinity and waterlogging by 'excluding' Na+ and Cl- from the xylem J. Exp. Bot., June 1, 2007; 58(8): 2169 - 2180. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
F. Calenge, V. Saliba-Colombani, S. Mahieu, O. Loudet, F. Daniel-Vedele, and A. Krapp Natural Variation for Carbohydrate Content in Arabidopsis. Interaction with Complex Traits Dissected by Quantitative Genetics Plant Physiology, August 1, 2006; 141(4): 1630 - 1643. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. J. Garthwaite, R. von Bothmer, and T. D. Colmer Salt tolerance in wild Hordeum species is associated with restricted entry of Na+ and Cl- into the shoots J. Exp. Bot., September 1, 2005; 56(419): 2365 - 2378. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. T. Estan, M. M. Martinez-Rodriguez, F. Perez-Alfocea, T. J. Flowers, and M. C. Bolarin Grafting raises the salt tolerance of tomato through limiting the transport of sodium and chloride to the shoot J. Exp. Bot., February 1, 2005; 56(412): 703 - 712. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Diatloff, M. Roberts, D. Sanders, and S. K. Roberts Characterization of Anion Channels in the Plasma Membrane of Arabidopsis Epidermal Root Cells and the Identification of a Citrate-Permeable Channel Induced by Phosphate Starvation Plant Physiology, December 1, 2004; 136(4): 4136 - 4149. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W.-H. Zhang, N. A. Walker, J. W. Patrick, and S. D. Tyerman Pulsing Cl- channels in coat cells of developing bean seeds linked to hypo-osmotic turgor regulation J. Exp. Bot., May 1, 2004; 55(399): 993 - 1001. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. TESTER and R. DAVENPORT Na+ Tolerance and Na+ Transport in Higher Plants Ann. Bot., April 1, 2003; 91(5): 503 - 527. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 O. Loudet, S. Chaillou, A. Krapp, and F. Daniel-Vedele Quantitative Trait Loci Analysis of Water and Anion Contents in Interaction With Nitrogen Availability in Arabidopsis thaliana Genetics, February 1, 2003; 163(2): 711 - 722. [Abstract] [Full Text] [PDF]
|
|