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. 2020 Feb 6;71(15):4452–4468. doi: 10.1093/jxb/eraa049

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© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 4. — The beneficial impacts of deeper roots on water and N uptake in rice. Dro1-NIL has deeper rooting compared with the IR64 parental lowland cultivar. (A) The DRO1 locus allows rice roots to explore deeper subsoil for water in a drought that IR64 cannot access, allowing Dro1-NIL to continue to grow and produce grain in drought seasons. (B) The deeper roots of Dro1-NIL allow the plants to access NH₄⁺ in deeper subsoils, meaning the plants can access N later in the growing season to improve grain yield and quality as compared with IR64.