%0 Journal Article 
%A Gamir, Jordi
%A Torres Vera, Rocio
%A Rial Cumbrera, Carlos
%A Berrio, Estefanía
%A Souza Campos, Pedro M.
%A Varela Montoya, Rosa María
%A Macías Domínguez, Francisco Antonio
%A Pozo, María J.
%A Flors, Victor
%A Lopez Ráez, Juan Antonio
%T Exogenous strigolactones impact metabolic profiles and phosphate starvation signalling in roots
%D 2020
%@ 1365-3040

%U http://hdl.handle.net/10498/34469
%X Strigolactones (SLs) are importantex-plantasignalling molecules in the rhizosphere,promoting the association with beneficial microorganisms, but also affecting plantinteractions with harmful organisms. They are also plant hormonesin-planta, actingas modulators of plant responses under nutrient-deficient conditions, mainly phos-phate (Pi) starvation. In the present work, we investigate the potential role of SLs asregulators of early Pi starvation signalling in plants. A short-term pulse of the syn-thetic SL analogue 20-epi-GR24 promoted SL accumulation and the expression of Pistarvation markers in tomato and wheat under Pi deprivation. 20-epi-GR24 applica-tion also increased SL production and the expression of Pi starvation markers undernormal Pi conditions, being its effect dependent on the endogenous SL levels.Remarkably, 20-epi-GR24 also impacted the root metabolic profile under these condi-tions, promoting the levels of metabolites associated to plant responses to Pi limita-tion, thus partially mimicking the pattern observed under Pi deprivation. The resultssuggest an endogenous role for SLs as Pi starvation signals. In agreement with thisidea, SL-deficient plants were less sensitive to this stress. Based on the results, wepropose that SLs may act as early modulators of plant responses to P starvation.
%K 20-epi-GR24
%K metabolism
%K molecular markers
%K Pi starvation
%K plant responses
%K signalling
%K strigolactones
%~ Universidad de Cádiz