Effects of Continuous SO2Fumigation on SH-containing Compounds in Two Wheat Cultivars of Different Sensitivities
- 1 June 1992
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Experimental Botany
- Vol. 43 (6) , 797-801
- https://doi.org/10.1093/jxb/43.6.797
Abstract
Two cultivars (Mec and Chiarano) of wheat (Triticum aestivum) were exposed to constant low levels of SO2 (35, 75 and 120 nl l−1) over a period of 4 months. In previous studies Mec has been shown to be more sensitive to SO2 and this has been confirmed in the present study where Mec showed a greater tendency than Chiarano to accumulate soluble non-protein SH compounds, principally glutathione and cysteine. The reduced glutathione to oxidized glutathione ratio (GSH/GSSG) increased significantly in Mec with SO2 treatment, but no change in the activity of glutathione reductase was observed.Keywords
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