Independent signalling cues underpin arbuscular mycorrhizal symbiosis and large lateral root induction in rice.
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Chiu, C. H., Choi, J., & Paszkowski, U. (2017). Independent signalling cues underpin arbuscular mycorrhizal symbiosis and large lateral root induction in rice.. New Phytologist, 217 (2), 552-557. https://doi.org/10.1111/nph.14936
Perception of arbuscular mycorrhizal fungi (AMF) triggers distinct plant signalling responses for parallel establishment of symbiosis and induction of lateral root formation. Rice receptor kinase CHITIN ELICITOR RECEPTOR KINASE 1 (CERK1) and α/β-fold hydrolase DWARF14-LIKE (D14L) are involved in pre-symbiotic fungal perception. After 6 wk post-inoculation with Rhizophagus irregularis, root developmental responses, fungal colonization and transcriptional responses were monitored in two independent cerk1 null mutants; a deletion mutant lacking D14L, and with D14L complemented as well as their respective wild-type cultivars (cv Nipponbare and Nihonmasari). Here we show that although essential for symbiosis, D14L is dispensable for AMF-induced root architectural modulation, which conversely relies on CERK1. Our results demonstrate uncoupling of symbiosis and the symbiotic root developmental signalling during pre-symbiosis with CERK1 required for AMF-induced root architectural changes.
Rhizophagus irregularis, D14L, arbuscular mycorrhizal (AM) symbiosis, lateral root, receptor kinase, rice (Oryza sativa), root system architecture, signalling
Leverhulme Early Career Fellowship. Grant Number: ECF‐2016‐392
External DOI: https://doi.org/10.1111/nph.14936
This record's URL: https://www.repository.cam.ac.uk/handle/1810/278420