Identification and interest of molecular markers to monitor plant Pi status
2023
Cuyas, Laura | David, Pascale | de Craieye, Damien | Ng, Sophia | Arkoun, Mustapha | Plassard, Claude | Faharidine, Mohamadi | Hourcade, Delphine | Degan, Francesca | Pluchon, Sylvain | Nussaume, Laurent | Timac - Agro International | Institut de Biosciences et Biotechnologies d'Aix-Marseille (ex-IBEB) (BIAM) ; Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) | La Trobe University | Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) | ARVALIS - Institut du Végétal [Boigneville] ; ARVALIS - Institut du végétal [Paris] | project (Phyto-P) was supported by DRF impulsion program from the CEA | ANR-18-CE43-0006,FORAGE,Nanomatériaux fonctionalisés par des enzymes pour utiliser les réserves de P organique du sol en agriculture(2018) | ANR-21-CE12-0016,ULTIM,Elucider la perception du Phosphate chez les plantes grâce au développement de l'imagerie en temps réelle de la transcription(2021)
International audience
Show more [+] Less [-]English. Background Inorganic phosphate (Pi) is the sole source of phosphorus for plants. It is a limiting factor for plant yield in most soils worldwide. Due to economic and environmental constraints, the use of Pi fertilizer is and will be more and more limited. Unfortunately, evaluation of Pi bioavailability or Pi starvation traits remains a tedious task, which often does not inform us about the real Pi plant status. Results Here, we identified by transcriptomic studies carried out in the plant model Arabidopsis thaliana, early roots-or leaves-conserved molecular markers for Pi starvation, exhibiting fast response to modifications of phosphate nutritional status. We identified their homologues in three crops (wheat, rapeseed, and maize) and demonstrated that they offer a reliable opportunity to monitor the actual plant internal Pi status. They turn out to be very sensitive in the concentration range of 0-50 µM which is the most common case in the vast majority of soils and situations where Pi hardly accumulates in plants. Besides in vitro conditions, they could also be validated for plants growing in the greenhouse or in open field conditions. Conclusion These markers provide valuable physiological tools for plant physiologists and breeders to assess phosphate bio-availability impact on plant growth in their studies. This also offers the opportunity to cope with the rising economical (shortage) and societal problems (pollution) resulting from the management of this critical natural resource.
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