About 60-85% of total phosphorus (P) in cereal crops is allocated to the seeds, but little is known on the molecular mechanisms underlying P allocation to the seeds. Che et al. have discovered two node-localized and plasma membrane-localized Pi influx transporters, OsPHO1;1 and OsPHO1;2, are responsible for the allocation of P to the seeds. Knockout of OsPHO1;1 or OsPHO1;2 resulted in yield decrease and germination delay, suggesting they are important for seed development and early growth in rice.

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