تأثير بعض أنواع البكتريا المحفزة لنمو النبات في المحتوى الفينولي و صبغات التركيب الضوئي لدى نباتات البندورة الطماطم الملقحة بفيروس موزاييك الخيار

Abstract EN

This experiment aimed to study the effect of three species of plant growth promoting rhizobacteria (PGPR) (Frateuria aurantia, Bacillus megaterium, and Azotobacter chroococcum) inoculated seeds and shoots of tomato plants (infected and healthy), on the total phenol and photosynthesis pigments content and their ability to suppress the effect of Cucumber mosaic virus (CMV) in a plastic tunnel in Tartus, Syria.

Results showed, that treatment with single bacteria Frateuria aurantia produced significantly higher total phenol compared with Bacillus megaterium or Azotobacter chroococcum, in the CMV-infected or healthy control.

The bacteria Azotobacter chroococcum gave significant increase in photosynthesis pigments compared with Bacillus megaterium or Frateuria aurantia.

Mixed treatment with the three bacterial species gave the highest increase in total phenol and photosynthesis pigments in both CMV-infected and healthy tomato plants.

Such increase in total phenols and photosynthesis pigments suggest the potential ability of rhizobacteria to stimulate systemic resistance and reduce the effect of CMV infection on tomato plants