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Title: Receptor-associated kinases control the lipid provisioning program in plant–fungal symbiosis
The mutualistic association between plants and arbuscular mycorrhizal (AM) fungi requires intracellular accommodation of the fungal symbiont and maintenance by means of lipid provisioning. Symbiosis signaling through lysin motif (LysM) receptor-like kinases and a leucine-rich repeat receptor-like kinase DOES NOT MAKE INFECTIONS 2 (DMI2) activates transcriptional programs that underlie fungal passage through the epidermis and accommodation in cortical cells. We show that twoMedicago truncatulacortical cell–specific, membrane-bound proteins of a CYCLIN-DEPENDENT KINASE-LIKE (CKL) family associate with, and are phosphorylation substrates of, DMI2 and a subset of the LysM receptor kinases.CKL1andCKL2are required for AM symbiosis and control expression of transcription factors that regulate part of the lipid provisioning program. Onset of lipid provisioning is coupled with arbuscule branching and with the REDUCED ARBUSCULAR MYCORRHIZA 1 (RAM1) regulon for complete endosymbiont accommodation.  more » « less
Award ID(s):
2139351
PAR ID:
10535905
Author(s) / Creator(s):
;
Publisher / Repository:
AAAS
Date Published:
Journal Name:
Science
Volume:
383
Issue:
6681
ISSN:
0036-8075
Page Range / eLocation ID:
443 to 448
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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