School of Biological Sciences and Institute of Agriculture, University of Western Australia, Perth, Western Australia, Australia; email:
Department of Plant Nutrition, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing, China.
Annu Rev Plant Biol. 2022 May 20;73:17-42. doi: 10.1146/annurev-arplant-102720-125738. Epub 2021 Dec 15.
Tremendous progress has been made on molecular aspects of plant phosphorus (P) nutrition, often without heeding information provided by soil scientists, ecophysiologists, and crop physiologists. This review suggests ways to integrate information from different disciplines. When soil P availability is very low, P-mobilizing strategies are more effective than mycorrhizal strategies. Soil parameters largely determine how much P roots can acquire from P-impoverished soil, and kinetic properties of P transporters are less important. Changes in the expression of P transporters avoid P toxicity. Plants vary widely in photosynthetic P-use efficiency, photosynthesis per unit leaf P. The challenge is to discover what the trade-offs are of different patterns of investment in P fractions. Less investment may save P, but are costs incurred? Are these costs acceptable for crops? These questions can be resolved only by the concerted action of scientists working at both molecular and physiological levels, rather than pursuing these problems independently.
在植物磷（P）营养的分子方面已经取得了巨大的进展，而往往没有关注土壤科学家、生理生态学家和作物生理学家提供的信息。本综述提出了整合来自不同学科的信息的方法。当土壤 P 供应非常低时，P 动员策略比菌根策略更有效。土壤参数在很大程度上决定了根系从贫磷土壤中获取多少 P，而 P 转运体的动力学特性则不太重要。P 转运体表达的变化可以避免 P 毒性。不同植物的光合 P 利用效率、单位叶 P 的光合作用差异很大。挑战在于发现不同 P 组分投资模式的权衡取舍是什么。较少的投资可能会节省 P，但会产生成本吗？这些成本对作物来说是否可以接受？只有在分子和生理水平上共同努力的科学家才能解决这些问题，而不是各自独立地研究这些问题。
