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The study 'A nucleoside signal generated by fungal endophyte regulates host cell death and promotes root colonization' was published in Cell Host & Microbe.

Arnold thinks that the special climate dependence of these fungal endophytes reflects a process of co-evolution with their hosts -- or "research and development," as she put it -- as plants find the ideal endophyte partner and flourish despite the distinctive stresses that plants face in these harsh northern landscapes.

"There's not a lot of information about exactly what an individual endophyte does for an individual plant. So, our study is foundational in the sense that we tried to figure out who these endophytes are, and how they're distributed, and how they might change with a shifting climate."

Some of the tour topics include watering systems for controlled grazing, novel endophyte tall fescue and building soil fertility with poultry litter.

Root-dwelling mycorrhizal fungi are one subclass of endophyte that has received far more publicity, both here at this blog and elsewhere, than the rest.