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Nuclear Ca2+ signalling in arbuscular mycorrhizal and actinorhizal endosymbioses: on the trail of novel underground signals

Abstract : Root endosymbioses are beneficial associations formed between terrestrial plants and either bacterial or fungal micro-organisms. A common feature of these intracellular symbioses is the requirement for mutual recognition between the two partners before host-regulated microbial entry. As part of this molecular dialogue, symbiosis-specific microbial factors set in motion a highly conserved plant signal transduction pathway, of which a central component is the activation of sustained nuclear Ca2+ oscillations in target cells of the host epidermis. Here, we focus on recent findings concerning this crucial Ca2+-dependent signalling step for endosymbiotic associations involving either arbuscular mycorrhizal fungi or nitrogen-fixing Frankia actinomycetes, and in particular how this knowledge is contributing to the identification of the respective microbial factors.
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https://hal.archives-ouvertes.fr/hal-01602613
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Submitted on : Monday, October 2, 2017 - 7:03:30 PM
Last modification on : Thursday, July 21, 2022 - 2:29:34 PM

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David Barker, Mireille Chabaud, Guilia Russo, Andrea Genre. Nuclear Ca2+ signalling in arbuscular mycorrhizal and actinorhizal endosymbioses: on the trail of novel underground signals. New Phytologist, Wiley, 2017, 214 (2), pp.533-538. ⟨10.1111/nph.14350⟩. ⟨hal-01602613⟩

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