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High frequency of abnormal high molecular weight glutenin alleles in Chinese wheat landraces of the Yangtze-River region

Zheng, W., Peng, Y., Ma, J., Appels, R., Sun, D. and Ma, W. (2011) High frequency of abnormal high molecular weight glutenin alleles in Chinese wheat landraces of the Yangtze-River region. Journal of Cereal Science, 54 (3). pp. 401-408.

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Link to Published Version: http://dx.doi.org/10.1016/j.jcs.2011.08.004
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Abstract

A total of 485 common landraces of bread wheat were collected from the Yangtze-River region of China. Their high molecular weight glutenin subunit (HMW-GS) composition was analyzed by Matrix-assisted laser desorption/ionization time-of-flight Mass Spectrometry (MALDI-TOF-MS). Among all landraces tested, 453 were homogeneous for HMW-GS, 32 were heterogeneous, and 37 contained abnormal subunits. A total of 22 alleles were detected, including 3 at Glu-A1, 13 at Glu-B1 and 6 at Glu-D1, respectively. Higher variations occurred at the Glu-B1 locus compared with Glu-A1 and Glu-D1. Glu-A1c (74.0%), Glu-B1b (40.4%), Glu-D1a (84.9%) appeared to be the most frequent alleles at Glu-A1, Glu-B1 and Glu-D1, respectively. Two alleles ("null" and 1) at the Glu-A1 locus, three allele compositions (7 + 8, 7OE + 8, 7 + 9) at the Glu-B1 locus, and two (2 + 12 and 5 + 10) at the Glu-D1 locus appeared to be the common types in the 485 landraces. Sixteen new alleles represented by abnormal subunits were identified at the Glu-B1 and the Glu-D1 locus.

Publication Type: Journal Article
Murdoch Affiliation: Centre for Comparative Genomics
Western Australian State Agricultural Biotechnology Centre
Publisher: Academic Press
Copyright: © 2011 Elsevier Ltd.
URI: http://researchrepository.murdoch.edu.au/id/eprint/6791
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