Blue light exposure and nutrient conditions influence the expression of genes involved in simultaneous hyphal knot formation in Coprinopsis cinerea.

•C. cinerea hyphal knots formed simultaneously by light in glucose limited condition.•The fas1, cfs1, cfs2 and nod1 are highly transcribed at 1 h after light exposure.•Galectins, pheromone, laccase are upregulated 10 h after blue light exposure.•Glucose content affect expressions of those genes after blue light exposure.•Blue light would accelerate hyphal knot induction under nutrient limited condition.