Jacques Cécile, Forest Marion, Durey Vincent, Salon Christophe, Ourry Alain, Prudent Marion
Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, University Bourgogne Franche-Comté, Dijon, France.
UMR 950 Ecophysiologie Végétale, Agronomie et Nutritions N, C, S, INRAE, Normandie Université, UNICAEN, Caen, France.
Front Plant Sci. 2021 Dec 23;12:785221. doi: 10.3389/fpls.2021.785221. eCollection 2021.
Legume plants, such as peas, are of significant nutritional interest for both humans and animals. However, plant nutrition and thus, seed composition, depends on soil mineral nutrient availability. Understanding the impact of their deprivation on the plant mineral nutrient content, net uptake, and remobilization is of key importance but remains complex as the elements of the plant ionome are linked in intricate networks, one element deprivation impacting uptake and remobilization of other nutrients. To get a better insight into pea mineral nutrition, the transitory deprivations of 13 mineral nutrients were imposed during the vegetative growth phase. Thereafter, plants were grown under optimal mineral conditions until physiological maturity. Plant nutritional status and seed quality impacts caused by the deprivations were characterized using measurement of mineral nutrient concentration and plant biomass allocation. Our results highlight: (i) the preferential allocation of dry weight and elements to shoots at the expense of the roots under non-limiting conditions, and more particularly to the tendrils in comparison to the other shoot organs, (ii) the positive and/or negative impact of one mineral nutrient deprivation on other elements of the ionome, (iii) four different remobilization strategies for eight mineral nutrients, and (iv) possible strategies to improve seed quality fine control of fertilization during a period of mineral nutrient deficiency.
豆科植物，如豌豆，对人类和动物都具有重要的营养意义。然而，植物营养以及种子成分取决于土壤中矿物质养分的有效性。了解矿物质养分缺乏对植物矿物质养分含量、净吸收和再转运的影响至关重要，但由于植物离子组中的元素通过复杂的网络相互关联，一种元素的缺乏会影响其他养分的吸收和再转运，因此这一过程仍然很复杂。为了更深入地了解豌豆的矿物质营养，在营养生长阶段对13种矿物质养分进行了短暂剥夺。此后，将植物种植在最佳矿物质条件下直至生理成熟。通过测量矿物质养分浓度和植物生物量分配来表征剥夺对植物营养状况和种子质量的影响。我们的结果表明：（i）在非限制条件下，干重和元素优先分配到地上部分，以牺牲根系为代价，特别是与其他地上器官相比，优先分配到卷须；（ii）一种矿物质养分缺乏对离子组中其他元素的正向和/或负向影响；（iii）八种矿物质养分的四种不同再转运策略；（iv）在矿物质养分缺乏期间精确控制施肥以提高种子质量的可能策略。
