A model based on facilitated passive diffusion is needed to describe root water entry through aquaporins

Plant Signaling and Behavior

Volumn 2, Issue 5, 2007, Pages 401-403

  Beaudette, P C ^a   Salon, C ^b   Emery, R J N ^a  

^a TRENT UNIVERSITY   (Canada)

^b CEMAGREF   (France)

Author keywords

Aquaporins; Biophysical models; Facilitated passive diffusion; Root water entry; Simple passive diffusion

Indexed keywords

EID: 36248996926     PISSN: 15592316     EISSN: 15592324     Source Type: Journal    
DOI: 10.4161/psb.2.5.4333     Document Type: Article

References (17)

1. Markhart IIIrd AH, Smit B. Measurement of root hydraulic conductance. HortScience 1990; 25:282-7.
2. Maggio A, Joly RJ. Effects of mercuric chloride on the hydraulic conductivity of tomato root systems. Plant Physiol 1995; 109:331-5.
3. Carvajal M, Cooke DT, Clarkson DT. Responses of wheat plants to nutrient deprivation may involve the regulation of water channel function. Planta 1996; 199:372-81.
4. Henzler T, Waterhouse RN, Smyth AJ, Carvajal M, Cooke DT, Schäffner AR, Steudle E Clarkson DT. Diurnal variations in hydraulic conductivity and root pressure can be correlated with the expression of putative aquaporins in the toots of Lotus japonicus. Planta 1999; 210:50-60.
5. 2. J Exp Bot 1999; 50:1607-12.
6. Wan X, Zwiazek JJ. Mercuric chloride effects on root water transport in aspen seedlings. Plant Physiol 1999; 121:939-46.
7. Kjellbom P, Larsson C, Johansson I, Karlsson M, Johanson U. Aquaporins and water homeostasis in plants. Trends Plant Sci 1999; 4:308-14.
8. Carvajal M, Cerdá A, Martínez V. Does calcium ameliorate the negative effect of NaCl on melon root water transport by regulating aquaporin activity. New Phytol 2000; 145:439-47.
9. Parsons LR, Kramer PJ. Diurnal cycling in root resistance to water movement. Physiol Plant 1974; 30:19-23.
10. Fiscus EL. Diurnal changes in volume and solute transport coefficients of Phaseolus roots. Plant Physiol 1986; 80:752-9.
11. Emery RJN, Salon C. Water entry into detached root systems saturates with increasing externally applied pressure; a result inconsistent with models of simple passive diffusion. Physiol Plant 2002; 115:406-16.
12. 2 and ABA. J Exp Bot 2007, (doi:10.1093/jxb/erl289).
13. Javot H, Maurel C. The role of aquaporins in root water uptake. Ann Bot 2002; 90:301-13.
14. Fiscus EL. Determination of hydraulic and osmotic properties of soybean root systems. Plant Physiol 1977; 59:1013-20.
15. Passioura JB. Water transport in and to roots. Ann Rev Plant Physiol Plant Mol Biol 1988; 39:245-65.
16. Jackson MB, Davies WJ, Else MA. Pressure-flow relationships, xylem solutes and root hydraulic conductance in flooded tomato plants. Ann Bot 1996; 77:17-24.
17. Nobel PS. Physicochemical and Environmental Plant Physiology. San Diego: Academic Press, 1991.