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Published on: July 16, 2019
Differential expression of manganese superoxide dismutase sequence variants in near isogenic lines of wheat during
Kwang-Hyun Baek1, Daniel Z Skinner
1Department of Crop and Soil Sciences, 210 Johnson Hall, Washington State University, Pullman, WA 99164-6420, USA.
Abstract:
Numerous sequence variants of wheat (Triticum aestivum L.) manganese superoxide dismutase (MnSOD) genes have been found. Quantitative real-time PCR was used to measure the expression levels of three MnSOD genes distinguished by a variable amino acid, and three genes distinguished by sequence variation in the 3' untranslated region (3' UTR), in wheat plants grown at 20 degrees C and cold-acclimated for 1-4 weeks at 2 degrees C. The amino acid variants did not differ significantly in expression levels, however, differential expression of genes differing in the 3' UTR was observed. Diploid wheat-related species also carried sequence variants of MnSOD, with differing levels of expression, suggesting diversification of the MnSOD gene family occurred prior to the polyploidization events of hexaploid wheat.
