RT Conference Proceedings
T1 Volatile compounds other than CO2 emitted by different microorganisms promote distinct post-transcriptionally regulated responses in plants
A1 Pozueta, Javier
K1 Plantas
AB Using a “box-in-box” co-cultivation system we have investigated plant responses to microbial volatile compounds (VCs), andevaluated the contributions of organic and inorganic VCs (VOCs and VICs, respectively) to these responses. Arabidopsisplants were exposed to VCs emitted by adjacent Alternaria alternata and Penicillium aurantiogriseum cultures, with and withoutcharcoal filtration. No VOCs were detected in the headspace of growth chambers containing fungal cultures with charcoalfilters. However, these growth chambers exhibited elevated CO2 and bioactive CO and NO headspace concentrations.Independently of charcoal filtration, VCs from both fungal phytopathogens promoted growth and distinct developmentalchanges. Plants cultured at CO2 levels observed in growth boxes containing fungal cultures were identical to those cultured atambient CO2. Plants exposed to charcoal-filtered fungal VCs, non-filtered VCs, or super-elevated CO2 levels exhibitedtranscriptional changes resembling those induced by increased irradiance. Thus, in the “box-in-box” system, (a) fungal VICsother than CO2 and/or VOCs not detected by our analytical systems strongly influence the plants´ responses to fungal VCs, (b)different microorganisms release VCs with distinct action potentials, (c) transcriptional changes in VC-exposed plants aremainly due to enhanced photosynthesis signaling, and (d) regulation of some plant responses to fungal VCs is primarily posttranscriptional.
YR 2019
FD 2019-02-22
LK https://hdl.handle.net/10630/17366
UL https://hdl.handle.net/10630/17366
LA eng
NO Resumen de la conferencia
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía TechEsta conferencia cuenta con la financiación de una ayuda a conferenciantes de los fondos de los que dispone el Departamento de Biología Molecular y Bioquímica (UMA) para tal fin.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 3 mar 2026