We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
ALLEVIATION OF BLEACHING HERBICIDE TOXICITY BY PGPR STRAIN ISOLATED FROM WHEAT RHIZOSPHERE.
- Authors
BOURAHLA, Maissa; DJEBBAR, Réda; KACI, Yahia; ABROUS-BELBACHIR, Ouzna
- Abstract
Plant Growth Promoting Rhizobacteria (PGPR) can play important role in agriculture. The objective of this study was to assess the ability of the isolated strain Pseudomonas putida to improve physiological and biochemical parameters of durum wheat seedlings (Triticum durum Desf. Var. Mohamed Ben Bachir) and helped them to withstand bleaching herbicide the norflurazon. At 10-4 M, the norflurazon induced the bleaching of seedlings (photobleaching). At the physiological level, it caused the inhibition of carotenoids (0.03±0.01 mg g-1), chlorophylls (0.15±0.03 mg g-1) and carbohydrates (0.28±0.07 mg g-1) contents. At the cellular level, carotenoids defiency angendred by the norflurazon induced oxidative stress which manifested by an increase of MDA content (32.33±2.08 mmoles g-1), a lipid peroxidation marker, as well as a sharp increase in the electrolytes leakage (63.7±6.01 %) sign of membrane systems deterioration. The norflurazon also decreased the catalase (7.13 μmol H2O2 mn-1mg -1of proteins) and glutathion S-transferase (2 nanomol min-1mg-1 of proteins) activities in the leaves of durum wheat seedlings. The strain of Pseudomonas putida with inherent phosphate solubilizing activity, auxins (IAA) synthesis and EPS production was inoculated to the wheat seedlings in the presence and absence of norflurazon. It had eased phytotoxic effects of norflurazon on wheat seedlings and improving theirs physiology and their antioxidant mechanisms. The bacteria strain used would so represent a valuable partner in the future agriculture by its bioprotective and biostimulating properties.
- Subjects
PLANT growth-promoting rhizobacteria; EFFECT of herbicides on plants; DURUM wheat; NORFLURAZON; PSEUDOMONAS putida; PLANT physiology; OXIDATIVE stress
- Publication
Annals of Oradea University, Biology Fascicle / Analele Universităţii din Oradea, Fascicula Biologie, 2018, Vol 25, Issue 2, p42
- ISSN
1224-5119
- Publication type
Article