Role of plant-fungal nutrient trading and host control in determining the competitive success of ectomycorrhizal fungi.

ABSTRACT: Multiple ectomycorrhizal fungi (EMF) compete to colonise the roots of a host plant, but it is not known whether their success is under plant or fungal control, or a combination of both. We assessed whether plants control EMF colonisation by preferentially allocating more carbon to more beneficial partners in terms of nitrogen supply or if other factors drive competitive success. We combined stable isotope labelling and RNA-sequencing approaches to characterise nutrient exchange between the plant host Eucalyptus grandis and three Pisolithus isolates when growing alone and when competing either indirectly (with a physical barrier) or directly. Overall, we found that nitrogen provision to the plant does not explain the amount of carbon that an isolate receives nor the number of roots that it

SUBMITTER: Hortal S 

PROVIDER: S-EPMC5702723 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature