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Impact of chloride (NaCl, KCl) and sulfphate (Na2SO4, K2SO4) salinity on glucosinolate metabolism in Brassica rapa

Aghajanzadeh, T. A., Reich, M., Kopriva, S. & De Kok, L. J., Apr-2018, In : Journal of Agronomy and Crop Science. 204, p. 137-146 10 p.

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  • Impact of chloride (NaCl, KCl) and sulphate

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DOI

Seedlings of Brassica rapa were exposed to increasing concentrations of NaCl,
Na2SO4, KCl and K2SO4 to study the effect on glucosinolate content, composition
and expression of genes of the glucosinolate biosynthetic pathway and associated
transcription factors. Growth was inhibited stronger by sulphate salts and strongest
by Na2SO4. Aliphatic, indolic and aromatic glucosinolates were differently affected
by the salts in shoot and roots. A decrease in aliphatic glucosinolates in shoots of
plants exposed to chloride salts corresponded to a decreased gene expression of a
key enzyme for their biosynthesis. Likewise, an increased level of indolic and aromatic
glucosinolates by Na2SO4 coincided with an increased gene expression of
enzymes responsible for the biosynthesis of these glucosinolates. The results show
that changes in glucosinolate content and composition under salt stress depend on
the ionic composition of the salts. This has implications for the quality of B. rapa
grown under different types of salinity.
Original languageEnglish
Pages (from-to)137-146
Number of pages10
JournalJournal of Agronomy and Crop Science
Volume204
Early online date16-Oct-2017
Publication statusPublished - Apr-2018

    Keywords

  • TOLERANCE, ROOTS, ARABIDOPSIS-THALIANA, SALT STRESS, SECONDARY METABOLITES, BROCCOLI SPROUTS, BIOSYNTHESIS, SULFUR, MECHANISMS, MYROSINASE

ID: 49130390