Details

Autor(en) / Beteiligte

• Pellet, D.M. (Cornell Univ., Ithaca, NY (USA). Plant, Soil and Nutrition Lab.)
• Papernik, L.A
• Jones, D.L
• Darrah, P.R
• Grunes, D.L
• Kochian, L.V

Titel

Involvement of multiple aluminium exclusion mechanisms in aluminium tolerance in wheat

Ist Teil von

• Plant and soil, 1997-05, Vol.192 (1), p.63-68

Ort / Verlag

Dordrecht: Kluwer Academic Publishers

Erscheinungsjahr

1997

Quelle

SpringerLINK Contemporary (Konsortium Baden-Württemberg)

Beschreibungen/Notizen

• The goal of this study was to determine if Al-chelators other than malate are released from root apices and are involved in Al-tolerance in different wheat (Triticum aestivum L.) genotypes. Also we wanted to establish if root exudates contribute to increases in rhizosphere pH around the root tip. In seedlings of Al-tolerant Atlas, we have documented a constitutive phosphate exudation from the root apex. Because phosphate can complex Al and bind protons, it could play an important role in Al tolerance, both via complexation of Al³⁺ and by contributing to the alkalinization of rhizosphere pH observed at the apex of Atlas. This study suggests that in wheat, Al-tolerance can be mediated by multiple exclusion mechanisms controlled by different genes.