Evaluation of the correlation between proline and water content of the Pisum sativum L. roots under abiotic stress factors influence
Journal Title: Naukovyi visnyk Chernivetskoho universytetu. Biolohiia (Biolohichni systemy) - Year 2017, Vol 9, Issue 2
Abstract
Abiotic stress is considered to be one of the main reasons for the loss of more than 50% harvest of different crops worldwide. The proline is an important amino acid takes part on protection living cell as well as adaptation processes against adverse environment stress factors. The effects of ionizing radiated pea seedlings with coupled salinity stress factor were investigated. Different growth reactions and free proline content depend of water-cut in root of the Pisum sativum seedlings were determined. High-level synthesis of proline is a widespread response observed in plants experiencing various stresses, in particular osmotic stresses. Therefore the quantification of this amino acid is very useful to assess the physiological status signal systems crosstalk and more generally to understand stress tolerance of plants is relevant. The concentration of proline depends of different factors, including different combinations of stressors and their doses. Our data potentiation indicates that after salt stress with preliminary irradiation, the content of free proline in the roots have increased. Radiation by its own does not affect proline content of a plant significantly, but could modify the salt effect. On 13th day after stressors influence the high level of water losses in roots was observed. Correlation coefficient between water-cut and proline content was negative (r=-0.87), but over time water level in plants restored and stabilized on about 34th day of the experiment and the correlation coefficient became positive (r=0.32). It may be related to osmotic shock, caused by affect salt, and following decrease in growth speed, when organism’s need of water somewhat decreased. It seems that metabolism is transferred to stable state and energetic processes are switched to support of plant integrity function and reparation.
Authors and Affiliations
О. Г. НЕСТЕРЕНКО, Н. М. РАШИДОВ
Keywords
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- EP ID EP304060
- DOI 10.31861/biosystems2017.02.192
- Views 90
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