Sulfur metabolism in Allium cepa is hardly affected by chloride and sulfate salinity

A - Papers appearing in refereed journals

Aghajanzadeh, T. A., Reich, M., Hawkesford, M. J. and Burow, M. 2018. Sulfur metabolism in Allium cepa is hardly affected by chloride and sulfate salinity . Archives of Agronomy and Soil Science.

AuthorsAghajanzadeh, T. A., Reich, M., Hawkesford, M. J. and Burow, M.
Abstract

Salinity as a major agricultural problem can affect crop growth and quality. Onion (Allium cepa L.) plant contains a wide variety of sulfur containing compounds which may be involved in plant protection against salt stress. In the current study, a similar reduction in growth caused by chloride and sulfate salts was observed when onion was exposed to equimolar concentrations of Na+. Also, no difference was observed for shoot/root ratio and dry matter content of roots and shoots. Plants accumulated Na+ and the respective anions (chloride and sulfate) which in turn caused changes in the content of other nutrients. The content of potassium and calcium was decreased more than the other elements by both sodium salts. Sulfate salinity resulted in substantial increase in total sulfur and sulfate content but chloride salinity affected neither the total sulfur nor sulfate content of the roots and shoots, only in onion exposed to 200 mM chloride salt, those of roots and shoots were reduced. Furthermore, the water-soluble nonprotein thiol content as well as the content of alliin remained rather unaffected. In conclusion, either salts affected the uptake and distribution of sulfate in onion, but had no or only a minor effect on the plant sulfur metabolism.

KeywordsAllium cepa; allilin; chloride salinity; sulfur metabolism; sulfate salinity
Year of Publication2018
JournalArchives of Agronomy and Soil Science
Digital Object Identifier (DOI)doi:10.1080/03650340.2018.1540037
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or code[20:20 Wheat] Maximising yield potential of wheat
Designing Future Wheat (DFW) [ISPG]
DFW - Designing Future Wheat - Work package 1 (WP1) - Increased efficiency and sustainability
Publisher's version
Output statusE-publication ahead of print
Publication dates
Online05 Nov 2018
Publication process dates
Accepted21 Oct 2018
PublisherTaylor & Francis
Copyright licenseCC BY
ISSN0365-0340

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