RT journal article
T1 Exogenous strigolactones impact metabolic profiles and phosphate starvation signalling in roots
A1 Gamir, Jordi
A1 Torres Vera, Rocio
A1 Rial Cumbrera, Carlos
A1 Berrio, Estefanía
A1 Souza Campos, Pedro M.
A1 Varela Montoya, Rosa María
A1 Macías Domínguez, Francisco Antonio
A1 Pozo, María J.
A1 Flors, Victor
A1 Lopez Ráez, Juan Antonio
A2 Química Orgánica
K1 20-epi-GR24
K1 metabolism
K1 molecular markers
K1 Pi starvation
K1 plant responses
K1 signalling
K1 strigolactones
AB 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.
SN 1365-3040
YR 2020
FD 2020
LK http://hdl.handle.net/10498/34469
UL http://hdl.handle.net/10498/34469
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 05-nov-2026