Differential effects of cold acclimation and abscisic acid on free amino acid composition in wheat

Zita Kovács, L. Simon-Sarkadi, Csongor Sovány, Klára Kirsch, G. Galiba, G. Kocsy

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The effect of cold acclimation and abscisic acid (ABA) treatment on the free amino acid composition was compared in Chinese Spring chromosome 5A substitution lines with different levels of freezing tolerance. The total amino acid content gradually increased during the 3-week cold acclimation period, while the effect of ABA became visible only after 7 d. The ratio of members of the glutamate family increased during cold acclimation and the ratio of amino acids belonging to the aspartate family decreased. Opposite changes were observed after treatment with ABA. Consistently with these results, ABA only induced a major increase in the Asn content, while the Asp, Glu, Gln and Pro levels were greatly induced by cold. A corresponding alteration at the gene expression level was only found for Pro and Glu. With the exception of Pro, cold- or ABA-induced changes in the amino acid levelsor Pro, did not correlate with the freezing tolerance of the three genotypes examined and were not affected by chromosome 5A. Since cold acclimation induced the accumulation of most of the amino acids, while ABA had a significant effect only on Asn, the cold-induced changes in free amino acid levels were probably not mediated by ABA.

Original languageEnglish
Pages (from-to)61-68
Number of pages8
JournalPlant Science
Volume180
Issue number1
DOIs
Publication statusPublished - Jan 2011

Fingerprint

Abscisic Acid
Acclimatization
amino acid composition
free amino acids
Triticum
abscisic acid
acclimation
Amino Acids
wheat
amino acids
cold tolerance
Freezing
Chromosomes
substitution lines
aspartic acid
Viperidae
acid treatment
Aspartic Acid
glutamates
Glutamic Acid

Keywords

  • Abscisic acid
  • Asparagine
  • Cold
  • Glutamate
  • Proline
  • Wheat

ASJC Scopus subject areas

  • Plant Science
  • Genetics
  • Agronomy and Crop Science

Cite this

Differential effects of cold acclimation and abscisic acid on free amino acid composition in wheat. / Kovács, Zita; Simon-Sarkadi, L.; Sovány, Csongor; Kirsch, Klára; Galiba, G.; Kocsy, G.

In: Plant Science, Vol. 180, No. 1, 01.2011, p. 61-68.

Research output: Contribution to journalArticle

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