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Comparative proteomic analysis of salt response proteins in seedling roots of two wheat varieties

Guo, G., Ge, P., Ma, C., Li, X., Lv, D., Wang, S., Ma, W.ORCID: 0000-0002-1264-866X and Yan, Y. (2012) Comparative proteomic analysis of salt response proteins in seedling roots of two wheat varieties. Journal of Proteomics, 75 (6). pp. 1867-1885.

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A comparative proteomic analysis was made of salt response in seedling roots of wheat cultivars Jing-411 (salt tolerant) and Chinese Spring (salt sensitive) subjected to a range of salt stress concentrations (0.5%, 1.5% and 2.5%) for 2. days. One hundred and ninety eight differentially expressed protein spots (DEPs) were located with at least two-fold differences in abundance on 2-DE maps, of which 144 were identified by MALDI-TOF-TOF MS. These proteins were involved primarily in carbon metabolism (31.9%), detoxification and defense (12.5%), chaperones (5.6%) and signal transduction (4.9%). Comparative analysis showed that 41 DEPs were salt responsive with significant expression changes in both varieties under salt stress, and 99 (52 in Jing-411 and 47 in Chinese Spring) were variety specific. Only 15 and 9 DEPs in Jing-411 and Chinese Spring, respectively, were up-regulated in abundance under all three salt concentrations. All dynamics of the DEPs were analyzed across all treatments. Some salt responsive DEPs, such as guanine nucleotide-binding protein subunit beta-like protein, RuBisCO large subunit-binding protein subunit alpha and pathogenesis related protein 10, were up-regulated significantly in Jing-411 under all salt concentrations, whereas they were down-regulated in salinity-stressed Chinese Spring.

Item Type: Journal Article
Murdoch Affiliation(s): Western Australian State Agricultural Biotechnology Centre
Publisher: Elsevier BV
Copyright: © 2012 Elsevier B.V.
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