I am currently working on a project to determine whether symbiotic fungi from epiphytic ferns such as Drynaria quercifolia have potential growth enhancing and stress tolerance mechanisms to their host. My hypothesis is that, since these symbionts live in stressful epiphytic environments, it is possible that they have stress-adaptive mechanisms. I need current related literature to strengthen the results of my project. So, can anybody provide links to related researches relevant to my present project? Thank you in advance!