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Expression profiling of in vitro Poplar roots during early interaction with the ectomycorrhizal fungus Laccaria bicolor

ABSTRACT: The early phase of the interaction between tree roots and ectomycorrhizal (ECM) fungi, prior to symbiosis establishment, is accompanied by a stimulation of lateral root (LR) development. We set out to identify gene networks that regulate LR development during the early signal exchanges between Populus tremula x Populus alba (hereafter called poplar) and the ECM fungus Laccaria bicolor. A sandwich culture system was developed in order to bring plant and fungus into an indirect contact, which permits signal molecule exchange and LR stimulation (emergence after 4-5 days of contact) but prohibits root colonization. A NimbleGen full genome poplar oligo-array was used to investigate transcript profiles at three days of indirect poplar/L. bicolor contact, referring to the time point of LR initiation in response to the fungus.

ORGANISM(S): Populus tremula x Populus alba Populus trichocarpa

PROVIDER: GSE16662 | GEO | 2009/11/01

SECONDARY ACCESSION(S): PRJNA117405

REPOSITORIES: GEO

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