Abstract
<jats:p>Coriander shows a wide range of bioactive components that support its nutraceutical potential that, according to the literature, can be enhanced through plant-associated microorganisms. Endophyte fungi Byssochlamys spectabilis and one fungus belonging to the Xylariaceae family were evaluated from an agronomic (i.e. dry weight), and chemical (both plant and essential oil (EO)) perspective. Endophytes were either inoculated in coriander plants or sprayed their filtrates as aerial treatment. Inoculated Xylariaceae fungus prompted higher (32%) plant dry weight also exhibiting a tendency to delay plant maturation. Inoculated plants showed higher antioxidant capacity than control, increasing tenfold with Xylariaceae, and doubling by using B. spectabilis (36.94 mg Trolox/g versus 17.32 mg Trolox/g in control plants). Regarding minerals, Zn was slightly increased after applying the B. spectabilis filtrate, while K and Fe decreased slightly after inoculation with Xylaraceae fungus. The application of B. spectabilis filtrate increased myristic acid from 1.9% to 2.6% and from &lt;0.05% to 0.7% in young and older plants EO, respectively, while inoculation with Xylariaceae endophyte increased n-decanal and n-undecanal, from 1% to 2.6% and from 1.1% to 1.8%, respectively, in young plants. Endophytic fungi can improve both coriander production and EO metabolomic profile.</jats:p>