Intimate interactions between photosynthetic and non-photosynthetic organisms require the orchestrated transfer of ions and metabolites between species. We review recent progress in identifying and characterizing the transport proteins involved in five mutualistic symbiotic interactions: lichens, Azolla -cyanobacteria, ectomycorrhiza, endomycorrhiza, and rhizobia-legumes. This review focuses on transporters for nitrogen and carbon and other solutes exchanged in the interactions. Their predicted functions are evaluated on the basis of their transport mechanism and prevailing transmembrane gradients of H and transported substrates. The symbiotic interactions are presented in the assumed order from oldest to most recently evolved.
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© 2020 Roy R et al.
Copyright 2020 Elsevier B.V., All rights reserved.
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