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Uptake of Aluminium by the root tips of an Al-sensitive and Al-tolerant cultivar of Zea mays
- Source :
- Plant Physiology and Biochemistry
- Publication Year :
- 1998
- Publisher :
- Elsevier BV, 1998.
-
Abstract
- Uptake and compartmentation of Al in the roots tips were investigated in two corn ( Zea mays L.) cultivars (HS7777 single sensitive hybrid and C525-M single tolerant hybrid). Seedlings were grown for 24 h in nutrient solution at pH 4.4 characterized by low ionic strength (2,06 μM) and low Al 3+ activity (10.3 μM). The root elongation decreased strongly for the sensitive cultivar. There were no differences in the contents of total Al in the entire roots between cultivars. Nonexchangeable-Al and exchangeable-Al contents were higher in the root tips of HS7777. The sensitive cultivar also showed higher total and exchangeable-Al contents in excised root tips in 180 min of Al uptake. Al uptake for both cultivars increased in solution containing 0.1 mM of 2,4-dinitrophenol. Al contents were higher for the tolerant cultivar.
- Subjects :
- Nutrient solution
Physiology
chemistry.chemical_element
Plant Science
Biology
Zea mays
Résistance aux facteurs nuisibles
Aluminium
Genetics
Poaceae
Variété
Cultivar
Absorption de substances nutritives
Toxicité du sol
fungi
P35 - Fertilité du sol
food and beverages
Low ionic strength
Taux de croissance
F61 - Physiologie végétale - Nutrition
chemistry
Agronomy
Expérimentation en laboratoire
H50 - Troubles divers des plantes
Phytotoxicity
Elongation
Racine
Subjects
Details
- ISSN :
- 09819428
- Volume :
- 36
- Database :
- OpenAIRE
- Journal :
- Plant Physiology and Biochemistry
- Accession number :
- edsair.doi.dedup.....6fd5ad1d1f9c35fc154808930f1c63e9