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Article

Grafting reveals organ-autonomous and feedback roles of root phloem development in source-sink dynamics.

Journal of experimental botany - 15 Apr 2026

Bartusch Kai, Schreier Tina B, Fischer-Stettler Michaela, Zeeman Samuel C, Truernit Elisabeth

Abstract excerpt

Carbon fixed in source leaves is partitioned between local use and long-distance transport through the phloem to heterotrophic sinks such as roots. Here, we investigated how mild defects in sink phloem differentiation influence whole-plant growth using two Arabidopsis mutants: ops, which exhibits short roots with protophloem differentiation defects, and ops opl2, which displays even shorter roots with combined...

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Identifiers

PMID: 41606772
DOI: 10.1093/jxb/erag042
PMCID: PMC13080374

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