Receptor-associated kinases control the lipid provisioning program in plant-fungal symbiosis

• 成果类型: Article
• 署名作者: Ivanov, Sergey; Harrison, Maria J.
• 署名单位: Cornell University; Boyce Thompson Institute for Plant Research
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-12267
• DOI: 10.1126/science.ade1124
• 发表日期: 2024-01-26
• 页码: 443-448
• 关键词: rhizogenes-transformed roots; medicago-truncatula; periarbuscular membrane; arbuscule development; bacterial; PATHWAY; genes; MODEL; colonization; arabidopsis

摘要

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 two Medicago truncatula cortical 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. CKL1 and CKL2 are 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.