Title Physiological and biochemical changes in Matricaria chamomilla induced by Pseudomonas fluorescens and water deficit stress Type of Research Article Keywords PGPR; chamomile; essential oil; injury indices; water deficit stress Abstract Physiological and biochemical changes in Matricaria chamomilla induced by Pseudomonas fluorescens and water deficit stress Researchers Hamid Mohammadi (First Researcher)، Mohammad Esmailpour (Second Researcher)، (Third Researcher)، Mehrnaz Hatami (Fourth Researcher)