Abstract
Grain softness protein (GSP) is an important protein for overcoming milling and grain defenses in the innate immunity systems of cereals. The objective of this study was to evaluate and understand GSP sequences in selected wheat, rye and triticale. Using sequences for this gene from a sequence database, we performed clustering analysis to compare the sequences obtained from 3 germplasms with other studied sequences for GSP. The maximum difference between the Hirmand GSP genotype in wheat and the database sequences was 23% in EF109396 and EF109399. Most amino acid variation between the GSP sequences involved the same amino acids. The Nikita rye GSP gene showed 64% identity with DQ269918 and AY667063. The isoelectric point in the GSP of wheat and Lasko triticale was significantly higher than that of rye GSP. In addition, parameters such as optical density, grand average of hydrophobicity, percentage of hydrophobicity and hydrophilic amino acids, and number of alpha helices and beta sheets in GSP were similar in wheat and triticale but not in wheat and rye.
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