School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia.
School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia.
Trends Plant Sci. 2019 Jan;24(1):69-82. doi: 10.1016/j.tplants.2018.10.004. Epub 2018 Dec 3.
Phosphorus (P) fertilisers, made from rock phosphate, are used to attain high crop yields. However, rock phosphate is a finite resource and excessive P fertilisers pollute our environment, stressing the need for more P-efficient crops. Some Proteaceae have evolved in extremely P-impoverished environments. One of their adaptations is to curtail the abundance of ribosomal RNA, and thus protein, and tightly control the acquisition and assimilation of nitrogen (N) and sulfur. This differs fundamentally from plants that evolved in environments where N limits plant productivity, but is likely common in many species that evolved in P-impoverished landscapes. Here, we scrutinise the relevance of these responses towards developing P-efficient crops, focusing on plant species where 'P is in the driver's seat'.
磷（P）肥料由磷矿制成，用于获得高作物产量。然而，磷矿是一种有限的资源，过量的 P 肥料会污染我们的环境，因此需要更高效利用 P 的作物。一些山龙眼科植物在极其贫磷的环境中进化而来。它们的一种适应方式是减少核糖体 RNA 的丰度，从而减少蛋白质的丰度，并严格控制氮（N）和硫的获取和同化。这与在 N 限制植物生产力的环境中进化而来的植物有根本的不同，但在许多在贫磷环境中进化而来的物种中可能很常见。在这里，我们仔细研究了这些反应对于开发高效利用 P 的作物的相关性，重点关注那些“P 起主导作用”的植物物种。
