The James Hutton Institute, Invergowrie, Dundee DD2 5DA, UK.
INRES, Institute of Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, 53113 Bonn, Germany.
Trends Plant Sci. 2024 Jul;29(7):814-822. doi: 10.1016/j.tplants.2024.01.008. Epub 2024 Feb 23.
The root angle plays a critical role in efficiently capturing nutrients and water from different soil layers. Steeper root angles enable access to mobile water and nitrogen from deeper soil layers, whereas shallow root angles facilitate the capture of immobile phosphorus from the topsoil. Thus, understanding the genetic regulation of the root angle is crucial for breeding crop varieties that can efficiently capture resources and enhance yield. Moreover, this understanding can contribute to developing varieties that effectively sequester carbon in deeper soil layers, supporting global carbon mitigation efforts. Here we review and consolidate significant recent discoveries regarding the molecular components controlling root angle in cereal crop species and outline the remaining research gaps in this field.
根角在从不同土壤层高效获取养分和水分方面起着至关重要的作用。较陡的根角可获取深层土壤中移动的水和氮，而较浅的根角则有利于从表土中捕获不移动的磷。因此，了解根角的遗传调控对于培育能够高效获取资源和提高产量的作物品种至关重要。此外，这一认识还有助于开发能够在深层土壤中有效固定碳的品种，从而支持全球碳减排努力。在这里，我们回顾和整合了最近在控制谷类作物根角的分子组成部分方面的重要发现，并概述了该领域的剩余研究空白。
