Nitric Oxide Metabolism Affects Germination in Botrytiscinerea and Is Connected to Nitrate Assimilation.

ABSTRACT: Nitric oxide regulates numerous physiological processes in species from all taxonomic groups. Here, its role in the early developmental stages of the fungal necrotroph Botrytis cinerea was investigated. Pharmacological analysis demonstrated that NO modulated germination, germ tube elongation and nuclear division rate. Experimental evidence indicates that exogenous NO exerts an immediate but transitory negative effect, slowing down germination-associated processes, and that this effect is largely dependent on the flavohemoglobin BCFHG1. The fungus exhibited a "biphasic response" to NO, being more sensitive to low and high concentrations than to intermediate levels of the NO donor. Global gene expression analysis in the wild-type and ΔBcfhg1 strains indicated a situation of str

SUBMITTER: Anta-Fernandez F 

PROVIDER: S-EPMC9324006 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature