Optimizing oilseed rape growth: Exploring the effect of foliar biostimulants on the interplay among metabolism, phenology, and yield. Omics data.

The current agricultural system is in search of new strategies to achieve a more sustainable production while keeping or even increasing crop yield and quality. In this scenario, the application of biostimulants constitutes a potent solution. In the current study, the impact of a blue-green microalgal extract (MB) and a pig tissue hydrolysate (PTH) on rapeseed plants’ development was characterized. Obtained results revealed a positive effect on yield parameters of plants treated with MB and, especially, PTH; this was associated to an improvement on the photosynthetic performance. Moreover, this study remarked the effects of biostimulants on plant phenology through their pivotal role in modulating developmental processes. More specifically, proteomic, metabolomic, and hormone content analyses revealed distinct alterations associated with the acceleration of phenology induced by biostimulant application. Additionally, some antioxidant enzymes and stress-related compounds were up-regulated upon MB and PTH treatments, indicating enhanced plant defense mechanisms in response to accelerated phenological transitions. Such findings highlight the intricate interplay between biostimulants and plant physiology, wherein biostimulants orchestrate rapid developmental changes, ultimately influencing growth dynamics. Altogether, the current study reveals that the application of both MB and PTH biostimulants promoted rapeseed plant phenology and productivity associated with an improvement in the photosynthetic machinery while boosting other physiological and molecular mechanisms.

当前农业体系正寻求新型策略，以在维持乃至提升作物产量与品质的同时，实现更可持续的生产。在此背景下，生物刺激素（biostimulant）的应用便是一种高效解决方案。本研究针对蓝藻微藻提取物（MB）与猪组织水解物（PTH）对油菜植株生长发育的影响开展了表征分析。研究结果显示，经MB处理尤其是PTH处理的植株，其产量相关指标呈现积极变化，这与光合性能的提升密切相关。此外，本研究阐明了生物刺激素对植物物候的调控作用，其核心机制在于调节植株的生长发育过程。具体而言，蛋白质组学、代谢组学与激素含量分析结果显示，生物刺激素施用后引发的物候加速现象，伴随有一系列显著的生理变化。此外，经MB与PTH处理后，部分抗氧化酶及胁迫相关化合物的表达量出现上调，表明植株应对物候加速转变的防御机制得到增强。上述研究结果揭示了生物刺激素与植物生理之间复杂的互作关系：生物刺激素可协调调控植株的快速生长发育进程，最终影响其生长动态。综合来看，本研究表明，施用MB与PTH两种生物刺激素，均可通过改善光合系统并激活其他生理与分子调控机制，进而促进油菜的物候进程与产量提升。