Evaluation of the biostimulant effects of two Chlorophyta microalgae on tomato (Solanum lycopersicum)

Eukaryotic microalgae from the Chlorophyta division are used in various bio-industries due to their ability produce high value compounds. Some of these compounds show plant biostimulant properties when applied plants, soil or growth medium hydroponic chambers. The first objective this study was evaluate if Chlamydomonas reinhardtii cc 124 and Chlorella sp. MACC-360 had effect on Solanum lycopersicum L. second investigate importance application mode time. third goal reveal strain-specific actions two algae strains. Tomato plants were grown pots layered with clay at bottom filled mixture vermiculate. In sets experiments leaves treated living algal extract, respectively. set, culture suspension (CS) centrifuged, pellet re-suspended water (CCS), weekly soil, while extract (cell disrupted – CDS) sprayed bi-weekly. flowering process, morphology, fruit features pigment contents analyzed. set experiments, per se CDS Flowering kinetics, reproductive capacity photosynthetic parameters examined. Both strains increased content, weight diameter tomato. Plants that received initial treatment an advanced age performed better than those initially a young age. induced early development significantly delayed milestone functions. promoted conversion light energy chemical energy, enhanced protection parameters. leaf temperature differential as well thickness. Overall, both stimulated important agronomic-valuable functions