Contribution à l’étude de l’influence du stress salin sur la composition biochimique de lentille d'eau
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Date
2019
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Publisher
Université of Eloued
Abstract
The salinity of soil and water, is one of the main a biotic factors that limit plant
productivity and yield, interest in the morphological characters and biochemical composition
of plants, However, most plants have several mechanisms to decrease the negative effects of
salinity including regulation and compartmentalization of ions, synthesis of compatible
solutes, induction of antioxidants, enzymes, plant hormones, and changes in the
photosynthetic pathway.
Many of the plants are exposed to salt stress in this study have a macrophyte plant is a
Lemna minor distinguished by their very important role as a source of nutrition of several
animals and filtration and water purification.
This study was conducted to test the effect of salinity by increasing Na Cl
concentration in the culture media lemna minor strains which one is witnessing, and on the
other hand, to prove the ability of this resistant plant salinity and mechanism of resistance this
stress.
Biochemical and physiological analyzes give results, they highlight the effect of
salinity on these plants, with an increase in the levels of certain biochemical parameters such
as sugars and proteins, and also in the decrease of others such as chlorophylls (a, b , a+ b) and
an alteration of form and decrease of growth of Lemna minor.
Description
Biochimie Appliquée
Keywords
salinity, salt stress, Lemna minor, growth, physiological and biochemical parameters., الملوحة ، اإلجهاد الملح ، النمو ، الفسيولوجية والكيمياء الحيوية