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FLOWERING LOCUS T1 is a pleiotropic regulator of reproductive development, longevity, and source-sink relations in barley.

Plant physiology - 6 Feb 2026

Helmsorig Gesa, Lan Tianyu, Haraldsson Einar B, Rütjes Thea, Westhoff Philipp, Weber Katrin, Kumlehn Jochen, Hensel Götz, Simon Rüdiger, von Korff Maria

Abstract excerpt

Source-sink interactions play a critical but mechanistically underexplored role in coordinating reproductive output and longevity in plants. Here, we investigated the role of FT1, the barley (Hordeum vulgare L.) homolog of the florigen FLOWERING LOCUS T (FT), in regulating source (leaf) and sink (inflorescence) development and metabolism. Using ft1 knockout mutants in the spring barley cultivar Golden Promise,...

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Flowers
Genetic Pleiotropy
Hordeum
Inflorescence
Photoperiod

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PMID: 41557697
DOI: 10.1093/plphys/kiag015

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