Alcaligenes faecalis Juj3 alleviates Plasmodiophora brassicae stress to cabbage via promoting growth and inducing resistance

Clubroot is a devastating disease threatening global cruciferous vegetable production caused by Plasmodiophora brassicae ( Pb ). We have evaluated the positive effects of Alcaligenes faecalis Juj3 on cabbage growth promotion and stress alleviation through pot field experiments. The strain was isolated from healthy rhizosphere with growth-promoting characteristics identified as A. based morphological traits phylogeny. Seed germination assays revealed that inoculation enhances bud shoot root growth. In experiments, fermentation powder at sowing dates significantly improved seedling biomass. Combining seed treatments irrigation after transplanting considerably reduced clubroot index resulted in appreciable biocontrol efficacy (83.7%). Gene expression analyses showed PR2 EIN3 were up-regulated. Physiologically, enhanced chlorophyll content activity normal environment. Irrespective whether plants under environment or stresses, photosynthesis. Field trial exhibits satisfactory (51.4%) Chinese (37.7%). Moreover, could also enhance biomass to improve yield quality. These findings pave way for future use agents reveal great potential rhizobacterium plant applications agriculture horticulture.