The impact of aluminium on the distribution of cell wall glycoproteins of pea root tip and their Al-binding capacity

Saule Kenjebaeva, Yoko Yamamoto, Hideaki Matsumoto

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Pea (Pisum sativum L.) roots were exposed to various concentrations of Al and cell wall glycoproteins containing salt-extractable proteins, SDS-extractable proteins, covalently bound proteins (CBPs), and extensins were separately extracted. The changes in their levels and the amount of bound Al to glycoproteins upon Al stress were investigated. The content of CBPs, but not of others, increased significantly with the increase of Al levels. Extensins and the salt-extractable proteins, but not the others, exhibited a marked Al-binding capacity in vivo. The amount of Al bound to extensions in vivo and in vitro was highest among the glycoproteins. The high Al-binding capacity of extensins might be caused by the high content of the hydroxy groups in hydroxyproline of extensins and Al-binding capacity to glycoproteins in the root tips may be involved in the Al-binding response in the apoplast.

Original languageEnglish
Pages (from-to)629-636
Number of pages8
JournalSoil Science and Plant Nutrition
Volume47
Issue number3
DOIs
Publication statusPublished - 2001

Keywords

  • Al toxicity
  • Al-binding capacity
  • Cell wall glycoproteins
  • Pea root tips

ASJC Scopus subject areas

  • Soil Science
  • Plant Science

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