Plant growth-promoting rhizobacteria enhance active ingredient accumulation in medicinal plants at elevated CO2 and are associated with indigenous microbiome

Hong Kong SARS, China: *Both PGPRs and elevated carbon dioxide benefit crop yields and quality *B. subtilis plus P. fluorescens plus elevated CO2 levels at 1,000 ppm made the roots of the medicinal plant, P. heterophylla, grow better *Fusarium decreased ht