Journal of Stress Physiology &
Biochemistry, Vol. 9 No. 4
2013, pp. 139-144 ISSN 1997-0838
Original Text Copyright (cc) 2013 by Romanova, Zhivet’yev, Penzina,
Graskova
ORIGINAL ARTICLE
Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 1
Dynamics of Pinus sylvestris L. needles
activity in Predbaikal’ye forests
Siberian Institute of Plant Physiology and
Biochemistry SB RAS, Irkutsk, Russia
*E-Mail: graskova@sifibr.irk.ru
Received June 21, 2013
The study was
aimed to analyse changes in peroxidase
activity of common pine needles throughout the
year. The needles of the 1-st, 2-nd and 3-d years were collected. Total
activity of guaiacol-dependent peroxidase was determined. Minimum
peroxidase activity is observed in January and February. In March
intense overall activation of peroxidase is observed in the needles of
all ages, which might be related to spring enhancement of physiological
processes and activation of metabolism. Autumn period is characterized
by more or less high activities of guaiacol peroxidase from September
till November, which is related to its participation in
stress-adaptation to low temperatures in winter. Peroxidase activity
changes depending on the season of the year. Needles of different age
are characterized by their own peroxidase activity level in various
time periods.
