biostudies-literatureVenneman JHercules Foundation544435https://www.ebi.ac.uk/biostudies/studies/S-EPMC7492573biostudies-literatureUnknown11Rhizospheric microorganisms can alter plant physiology and morphology in many different ways including through the emission of volatile organic compounds (VOCs). Here we demonstrate that VOCs from beneficial root endophytic <i>Serendipita</i> spp. are able to improve the performance of <i>in vitro</i> grown <i>Arabidopsis</i> seedlings, with an up to 9.3-fold increase in plant biomass. Additional changes in VOC-exposed plants comprised petiole elongation, epidermal cell and leaf area expansion, extension of the lateral root system, enhanced maximum quantum efficiency of photosystem II (F_v/F_m), and accumulation of high levels of anthocyanin. Notwithstanding that the magnitude of the effects was highly dependent on the test system and cultivation medium, the volatile blFrontiers in plant scienceRespiratory CO₂ Combined With a Blend of Volatiles Emitted by Endophytic <i>Serendipita</i> Strains Strongly Stimulate Growth of <i>Arabidopsis</i> Implicating Auxin and Cytokinin Signaling.PMC7492573AUGE/15/08, AUGE/15/17Steppe KHaesaert GVerwaeren JWalgraeve CAudenaert KVandermeersch LVereecke DVan Langenhove HVenneman JAmeye MfalseRespiratory CO₂ Combined With a Blend of Volatiles Emitted by Endophytic <i>Serendipita</i> Strains Strongly Stimulate Growth of <i>Arabidopsis</i> Implicating Auxin and Cytokinin Signaling.Rhizospheric microorganisms can alter plant physiology and morphology in many different ways including through the emission of volatile organic compounds (VOCs). Here we demonstrate that VOCs from beneficial root endophytic <i>Serendipita</i> spp. are able to improve the performance of <i>in vitro</i> grown <i>Arabidopsis</i> seedlings, with an up to 9.3-fold increase in plant biomass. Additional changes in VOC-exposed plants comprised petiole elongation, epidermal cell and leaf area expansion, extension of the lateral root system, enhanced maximum quantum efficiency of photosystem II (F_v/F_m), and accumulation of high levels of anthocyanin. Notwithstanding that the magnitude of the effects was highly dependent on the test system and cultivation medium, the volatile bl2020-01-01T00:00:00Z20202026-07-15T23:28:46.151Z2020-09-30T07:05:56ZS-EPMC74925733298321110.3389/fpls.2020.544435