Exogenous strigolactones impact metabolic profiles and phosphate starvation signalling in roots
| Autor: | Victor Flors, Rocío Torres-Vera, Carlos Rial, Francisco A. Macías, Juan Antonio López-Ráez, Rosa M. Varela, Jordi Gamir, Pedro Campos, Estefanía Berrio, María J. Pozo |
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| Přispěvatelé: | Consejo Superior de Investigaciones Científicas (España), European Commission, Generalitat Valenciana, Red Nacional de Carotenoides (España), Ministerio de Ciencia, Innovación y Universidades (España) |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Physiology 20-epi-GR24 Endogeny Plant Science Signalling 01 natural sciences Plant Roots Phosphates 03 medical and health sciences chemistry.chemical_compound Lactones Solanum lycopersicum Plant responses medicine Pi 2'-epi-GR24 Triticum Starvation Strigolactones Rhizosphere Chemistry fungi food and beverages Molecular markers Metabolism Pi starvation Phosphate Cell biology 030104 developmental biology Beneficial organism medicine.symptom Heterocyclic Compounds 3-Ring 010606 plant biology & botany Hormone Signal Transduction |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1365-3040 |
| Popis: | Strigolactones (SLs) are important ex-planta signalling molecules in the rhizosphere, promoting the association with beneficial microorganisms, but also affecting plant interactions with harmful organisms. They are also plant hormones in-planta, acting as modulators of plant responses under nutrient-deficient conditions, mainly phosphate (Pi) starvation. In the present work, we investigate the potential role of SLs as regulators of early Pi starvation signalling in plants. A short-term pulse of the synthetic SL analogue 2′-epi-GR24 promoted SL accumulation and the expression of Pi starvation markers in tomato and wheat under Pi deprivation. 2′-epi-GR24 application also increased SL production and the expression of Pi starvation markers under normal Pi conditions, being its effect dependent on the endogenous SL levels. Remarkably, 2′-epi-GR24 also impacted the root metabolic profile under these conditions, promoting the levels of metabolites associated to plant responses to Pi limitation, thus partially mimicking the pattern observed under Pi deprivation. The results suggest an endogenous role for SLs as Pi starvation signals. In agreement with this idea, SL-deficient plants were less sensitive to this stress. Based on the results, we propose that SLs may act as early modulators of plant responses to P starvation. Consejo Superior de Investigaciones Científicas, Grant/Award Number: 201640I040; European Regional Development Fund, Grant/Award Numbers: AGL2017‐88‐083‐R, RTI2018‐094350‐B‐C31; Generalitat Valenciana, Grant/Award Number: CDEIGENT/2018/015; Ministerio de Ciencia, Innovación y Universidades, Grant/Award Numbers: AGL2017‐88‐083‐R, RTI2018‐094350‐B‐C31, FJCI‐2015‐23575; National Network of Carotenoids, Grant/Award Number: BIO2017‐90877‐REDT |
| Databáze: | OpenAIRE |
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