Article

Contemporary Problems of Ecology

, Volume 2, Issue 6, pp 611-619

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

  • O. V. MasyaginaAffiliated withV. N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences Email author 
  • , S. G. ProkushkinAffiliated withV. N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences
  • , M. Yu. SadilovaAffiliated withV. N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences

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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.

Key words

fractional composition of proteins Gmelin and Siberian larch influence of temperature respiration of seeds