2026/07/22 by Ping Wang, Mingming Liu, Chenyu Zhao +15 · 1 voice
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Fungal and yeast genetics research #Insect-Plant Interactions and Control #Plant-Microbe Interactions and Immunity
paper · doi:10.1111/pbi.70726
openalex publication_date 2026/07/22 · openalex created_date 2026/07/23 · openalex updated_date 2026/07/26
The circadian clock plays critical roles in orchestrating temporal regulation of diverse physiological processes. However, its role in mediating root-associated immunity against soil-borne pathogens in crops remains poorly understood. Here, we show that cotton circadian clock gates nighttime resistance to vascular fungal pathogen Verticillium dahliae by shaping rhizosphere microbiome composition and activating jasmonic acid (JA)-dependent immune signalling. Pathogen infection, in turn, accelerates clock pace and perturbs nighttime microbial community structure. We identify GhLUX, an evening complex component, as a key regulator of this defence program. GhLUX enhances immunity by repressing GhJAZ expression, thereby amplifying JA signalling at night. Overexpression of GhLUX in field trials confers enhanced resistance to V. dahliae while simultaneously improving cotton fibre yield and quality. These findings uncover a mechanistic link between the circadian clock, rhizosphere microbiota and root immunity in cotton and suggest that circadian regulators can be harnessed to optimize both disease resistance and agronomic performance.