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Beta-Amylase Isozymes in Spring Common Wheat and Their Role in the Aggregation of Grain Proteins

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Abstract

The polymorphism of beta-amylase isoenzymes in spring common wheat was studied among varieties cultivated under the conditions of the Northern Trans-Urals. Four zymotypes were identified among the 41 accessions. A, C, and A* isozymes differed most frequently, the share of which, respectively, was 64.6 ± 7.3, 22.0 ± 3.7, and 12.2 ± 3.7%. During 2011–2013, the aggregating ability of grain proteins was studied using -S-S-bonds between groups of varieties carrying variants of beta-amylase A and C. It was established that the presence of isoenzyme C promoted a greater aggregation of grain polypeptides in comparison with beta-amylase A carriers but did not affect the formation of yield. Differences in beta-amylase did not affect the falling number associated with amylase activity.

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Correspondence to M. K. Akhtariyeva, Ya. O. Kozelets, Yu. M. Filippova or V. P. Netsvetaev.

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The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.

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Translated by V. Mittova

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Akhtariyeva, M.K., Kozelets, Y.O., Filippova, Y.M. et al. Beta-Amylase Isozymes in Spring Common Wheat and Their Role in the Aggregation of Grain Proteins. Cytol. Genet. 53, 294–299 (2019). https://doi.org/10.3103/S0095452719040029

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  • DOI: https://doi.org/10.3103/S0095452719040029

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