Aims Plant P acquisition strategies are driven by multiple belowground morphological and physiological traits as well as interactions among these traits. This study aimed to characterize the relationships among traits involved in P acquisition to explore tradeoffs and the main P-acquisition strategies and their mediation by soil type. Methods Ten morphological and physiological traits involved in P acquisition were measured across 13 species grown in controlled conditions in two contrasting soils with moderate P limitation. Results Tradeoffs between thicker and thinner roots were observed, with thicker roots exhibiting greater carboxylate release or phosphatase activity in the rhizosheath. Tradeoffs and coordination amongst traits were strongly mediated by soil type. Multivariate analysis of functional traits involved in P acquisition highlighted four main P-acquisition strategies relying primarily on morphological traits, physiological traits or a combination thereof. Conclusions The diversity of strategies demonstrates a potential for functional diversity benefits in cultivated plant communities via preferential access to different P pools leading to complementarities and reduced competition for resource acquisition. Overall, our results underpin functionally-complementary multispecies crop designs, enhancing P availability and cycling efficiency.

中文翻译：

---

农业生态集约化作物物种吸磷根系性状的权衡

目的 植物 P 获取策略由多种地下形态和生理特征以及这些特征之间的相互作用驱动。本研究旨在表征参与磷获取的性状之间的关系，以探索权衡和主要的磷获取策略及其在土壤类型之间的中介作用。方法 测量了在受控条件下生长的 13 个物种中与磷获取有关的 10 个形态和生理特征，这些物种在两种对比土壤中具有中等磷限制。结果 观察到粗根和细根之间的权衡，较粗的根在根鞘中表现出更大的羧酸盐释放或磷酸酶活性。性状之间的权衡和协调受土壤类型的强烈影响。P 获取中涉及的功能性状的多变量分析突出了四种主要的 P 获取策略，主要依赖于形态特征、生理特征或其组合。结论 策略的多样性表明，通过优先获取不同的磷库，导致互补性和减少对资源获取的竞争，栽培植物群落具有潜在的功能多样性益处。总体而言，我们的结果支持功能互补的多物种作物设计，提高了磷的可用性和循环效率。结论 策略的多样性表明，通过优先获取不同的磷库，导致互补性和减少对资源获取的竞争，栽培植物群落具有潜在的功能多样性益处。总体而言，我们的结果支持功能互补的多物种作物设计，提高了磷的可用性和循环效率。结论 策略的多样性表明，通过优先获取不同的磷库，导致互补性和减少对资源获取的竞争，栽培植物群落具有潜在的功能多样性益处。总体而言，我们的结果支持功能互补的多物种作物设计，提高了磷的可用性和循环效率。