Antimicrobial activity in a drought-tolerant lentil variety under some stress conditions
2019
Broomrapes are the most difficult plant parasites to control among all biotic stresses affecting plants in
the Mediterranean, Europe and Asia. Lentil is sensitive to broomrape (Orobanche crenata), which causes
significant yield losses in this species around the Mediterranean region. Our study was aimed at the evaluation
of antibacterial properties of Lens culinaris cv. ‘Sultan-1’ under drought stress and broomrape infection stress
conditions. The antimicrobial activity of the ethanol extract of ‘Sultan-1’ was assayed against the test for
microorganisms by methods of diffusion in agar and dilution in broth. The ethanol extracts from different
studied treatments showed antimicrobial activities, with diameters of the inhibition zone ranging from 7 mm
to 15 mm and from 2.5 to 20 µg mL-1, respectively. The highest antimicrobial activity against A. baumannii
ATCC 19606 was demonstrated by the extract of ‘Sultan-1’ at combined stress (drought stress + broomrape
infection) on the 1st day. Furthermore, the combined stress treatment promoted antibacterial effect against
some Gram-negative bacteria on the 1st day.
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