Copper toxicity in Chinese cabbage is not influenced by plant sulphur status, but affects sulphur metabolism- related gene expression and the suggested regulatory metabolites

A - Papers appearing in refereed journals

Shahbaz, M., Stuiver, C. E. E., Posthumus, F. S., Parmar, S., Hawkesford, M. J. and De Kok, L. J. 2014. Copper toxicity in Chinese cabbage is not influenced by plant sulphur status, but affects sulphur metabolism- related gene expression and the suggested regulatory metabolites. Plant Biology. 16 (1), pp. 68-78.

AuthorsShahbaz, M., Stuiver, C. E. E., Posthumus, F. S., Parmar, S., Hawkesford, M. J. and De Kok, L. J.
Abstract

The toxicity of high copper (Cu) concentrations in the root environment of Chinese cabbage (Brassica pekinensis) was little influenced by the sulphur nutritional status of the plant. However, Cu toxicity removed the correlation between sulphur metabolism-related gene expression and the suggested regulatory metabolites. At high tissue Cu levels, there was no relation between sulphur metabolite levels viz. total sulphur, sulphate and water-soluble non-protein thiols, and the expression and activity of sulphate transporters and expression of APS reductase under sulphate-sufficient or-deprived conditions, in the presence or absence of H2S. This indicated that the regulatory signal transduction pathway of sulphate transporters was overruled or by-passed upon exposure to elevated Cu concentrations.

KeywordsPlant Sciences
Year of Publication2014
JournalPlant Biology
Journal citation16 (1), pp. 68-78
Digital Object Identifier (DOI)doi:10.1111/plb.12019
PubMed ID23648043
Open accessPublished as non-open access
FunderHigher Education Commission (HEC), Pakistan
Biotechnology and Biological Sciences Research Council
Funder project or codeWheat
[20:20 Wheat] Maximising yield potential of wheat
PublisherWiley
ISSN1435-8603

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