In vitro evidence of aluminum effects on solution movement through root cell walls

Blarney F.P.C., Asher C.J., Edwards D.C. and Kerven G.L. (1993) In vitro evidence of aluminum effects on solution movement through root cell walls. Journal of Plant Nutrition, 16 4: 555-562. doi:10.1080/01904169309364556


Author Blarney F.P.C.
Asher C.J.
Edwards D.C.
Kerven G.L.
Title In vitro evidence of aluminum effects on solution movement through root cell walls
Journal name Journal of Plant Nutrition   Check publisher's open access policy
ISSN 1532-4087
Publication date 1993-04-01
Sub-type Article (original research)
DOI 10.1080/01904169309364556
Open Access Status Not Open Access
Volume 16
Issue 4
Start page 555
End page 562
Total pages 8
Subject 1102 Cardiovascular Medicine and Haematology
1314 Physiology
Abstract Little is known about the primary effects of aluminum (Al) in reducing root growth. However, the sorption of Al by the root cell wall, particularly by calcium (Ca) pectate, has been suggested as being important in the expression of Al toxicity in plants. To overcome problems arising from the close proximity of root cell components that may react with Al, a synthetic Ca pectate membrane was prepared as a model system for Al studies. Solution containing 1 mM Ca (as CaCl2) was passed through the membrane, and the flow rate measured. Solution containing 29 μM Al (as A1C13) and 1 mM Ca reduced solution flow rate by > 80% from c. 3.5 to c. 0.6 mL/min within 2 min, with a further slight decline over the next 4 min. The Al concentration in solution proximate to the inlet side of the membrane decreased to 15 μM within 10 min, and only 3 μM Al was measured in solution that had passed through the membrane. These results suggest that an important primary effect of toxic Al is a reduction in water movement into the root, with consequent effects on water relations in the plant.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 12 Jul 2016, 10:23:19 EST by System User