BIO Web Conf.
Volume 11, 2018IV(VI)th All-Russia Scientific-Practical Conference “Prospects of Development and Challenges of Modern Botany”
|Number of page(s)||5|
|Published online||21 August 2018|
The dynamics of free amino acids in the grains Tripogon chinensis (Franch.) Hack. when germinating in the conditions of the osmotic stress
FSBEI HE "Chita State Medical Academy", Chita, 672000, Russia
2 Transbaikalian Agrarian Institute – branch of FSBEI HE "Irkutsk State Agrarian University named after A.A. Ezhevsky ", Chita, 672023, Russia
* Corresponding author: email@example.com
The content of free amino acids in seeds and sprouts of T. chinensis in the control and at an osmotic pressure of 5 atm. was determined. The group of acidic and basic amino acids predominates in seeds. An adaptive reaction to a physiological drought is the transformation of the free amino acids metabolism. This is expressed in an increase in the total amount of free amino acids at the osmotic pressure of 5 atm., providing the osmotic component of adaptation. Under the conditions of the osmotic stress, the concentration of acidic and basic amino acids increases up to 48 hours, this may be due to the continued hydrolysis of reserve proteins. Under the influence of the osmotic stress there are changes in the group of amino acids, the metabolic precursor of which is glutamic acid. The amino acids, a part of this group, exhibit protective, signaling properties. Thus, the increase in the arginine concentration and ornithine is noted; this indicates the activation of the ornithine cycle and on the increase of amino acids catabolism. The revealed features can ensure the successful germination of T. chinensis grains under the conditions of the physiological drought.
© The Authors, published by EDP Sciences, 2018
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