Siberian Institute of Plant Physiology and
Biochemistry, Siberian Branch of RAS, Irkutsk, Russia
*E-Mail: ol.borovik@mail.ru
Received July 14, 2013
A content of carbohydrates and
dehydrins in the leaves, activities of the alternative (AP) and the
cytochrome (CP) pathways of respiration in mitochondria, isolated from
leaves, during cold hardening continuous light (5 °C) and dark
conditions with sucrose (2 °C) and relationships among these parameters
and a frost-resistance of winter wheat have been investigated. The
direct relationship among the content of carbohydrates, the activity of
AP and frost-resistance of winter wheat has been detected. It has been
concluded that the activity of the alternative oxidase
during cold hardening of winter
wheat depends on the content of
soluble carbohydrates and is necessary to maintain metabolic (red/ox)
homeostasis in the cell at low temperatures.
Key
words: alternative pathway, carbohydrates, mitochondria,
frost-resistance, Triticum aestivum L.
