, Volume 2, Issue 6, pp 611-619
Date: 23 Dec 2009

Influence of temperature on fractional composition of proteins and respiration of germinating seeds of Gmelin and Siberian larch

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Abstract

The influence of optimal and contrasting temperatures on the fractional composition of proteins and respiration of germinating seeds of Gmelin larch (Larix gmelinii (Rupr.) Rupr.) and Siberian larch (Larix sibirica Ledeb.) was revealed. The dominance of globulins (salt-soluble fraction) and insoluble proteins was noted in viable air-dry seeds of larch. Optimal and contrasting temperatures of germination of seeds caused significant changes in the content and dynamics of separate fractions of protein, the contrasting temperatures causing greater changes: increasing in the content of insoluble proteins, intense consumption of globulins at separate stages of germination. Respiration of the seeds during germination at contrasting temperatures also increased more than at an optimal temperature. Thermal regime of germination affected the character of relations between the respiration rate and contents of different protein fractions.

Original Russian Text © O.V. Masyagina, S.G. Prokushkin, M.Yu. Sadilova, 2009, published in Sibirskii Ekologicheskii Zhurnal, 2009, Vol. 16, No. 6, pp. 937–948.