Drought specifically downregulates mineral nutrition: Plant ionomic content and associated gene expression.

Autor: D'Oria A; UMR 950 Ecophysiologie Végétale, Agronomie et Nutritions N, C, S, Normandie Université, UNICAEN INRAE Caen France.; Laboratoire de Nutrition Végétale, Centre Mondial de l'Innovation Le Groupe Roullier Saint-Malo France., Courbet G; UMR 950 Ecophysiologie Végétale, Agronomie et Nutritions N, C, S, Normandie Université, UNICAEN INRAE Caen France., Billiot B; Laboratoire de Nutrition Végétale, Centre Mondial de l'Innovation Le Groupe Roullier Saint-Malo France., Jing L; Laboratoire de Nutrition Végétale, Centre Mondial de l'Innovation Le Groupe Roullier Saint-Malo France., Pluchon S; Laboratoire de Nutrition Végétale, Centre Mondial de l'Innovation Le Groupe Roullier Saint-Malo France., Arkoun M; Laboratoire de Nutrition Végétale, Centre Mondial de l'Innovation Le Groupe Roullier Saint-Malo France., Maillard A; Laboratoire de Nutrition Végétale, Centre Mondial de l'Innovation Le Groupe Roullier Saint-Malo France., Roux CP; Institut des Sciences des Plantes Paris-Saclay (IPS2), Université de Paris, CNRS INRAE Orsay France., Trouverie J; UMR 950 Ecophysiologie Végétale, Agronomie et Nutritions N, C, S, Normandie Université, UNICAEN INRAE Caen France., Etienne P; UMR 950 Ecophysiologie Végétale, Agronomie et Nutritions N, C, S, Normandie Université, UNICAEN INRAE Caen France., Diquélou S; UMR 950 Ecophysiologie Végétale, Agronomie et Nutritions N, C, S, Normandie Université, UNICAEN INRAE Caen France., Ourry A; UMR 950 Ecophysiologie Végétale, Agronomie et Nutritions N, C, S, Normandie Université, UNICAEN INRAE Caen France.
Jazyk: angličtina
Zdroj: Plant direct [Plant Direct] 2022 Aug 05; Vol. 6 (8), pp. e402. Date of Electronic Publication: 2022 Aug 05 (Print Publication: 2022).
DOI: 10.1002/pld3.402
Abstrakt: One of the main limiting factors of plant yield is drought, and while the physiological responses to this environmental stress have been broadly described, research addressing its impact on mineral nutrition is scarce. Brassica napus and Triticum aestivum were subjected to moderate or severe water deficit, and their responses to drought were assessed by functional ionomic analysis, and derived calculation of the net uptake of 20 nutrients. While the uptake of most mineral nutrients decreased, Fe, Zn, Mn, and Mo uptake were impacted earlier and at a larger scale than most physiological parameters assessed (growth, ABA concentration, gas exchanges and photosynthetic activity). Additionally, in B. napus , the patterns of 183 differentially expressed genes in leaves related to the ionome (known ionomic genes, KIGs) or assumed to be involved in transport of a given nutrient were analyzed. This revealed three patterns of gene expression under drought consisting of up (transport of Cl and Co), down (transport of N, P, B, Mo, and Ni), or mixed levels (transport of S, Mg, K, Zn, Fe, Cu, or Mn) of regulation. The three patterns of gene regulations are discussed in relation to specific gene functions, changes of leaf ionomic composition and with consideration of the crosstalks that have been established between elements. It is suggested that the observed reduction in Fe uptake occurred via a specific response to drought, leading indirectly to reduced uptake of Zn and Mn, and these may be taken up by common transporters encoded by genes that were downregulated.
Competing Interests: The authors declare that there are no conflicts of interest
(© 2022 The Authors. Plant Direct published by American Society of Plant Biologists and the Society for Experimental Biology and John Wiley & Sons Ltd.)
Databáze: MEDLINE
Externí odkaz: