Abstract
Plant Science Plant productivity depends on the elemental nutrients nitrogen and phosphorus, which are drawn from the soil. Oldroyd and Leyser review how root growth patterns adjust according to the physiological needs of the above-ground plant. Systemic signals, including small peptide signals, mediate communication between the shoot's needs and the root's supply. Science , this issue p. [eaba0196][1] [1]: /lookup/doi/10.1126/science.aba0196
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