The CELL NUMBER REGULATOR FW2.2 protein regulates cell-to-cell communication in tomato by modulating callose deposition at plasmodesmata
Language
en
Article de revue
This item was published in
Plant Physiology. 2024, vol. 196, n° 2, p. 883-901
Oxford University Press ; American Society of Plant Biologists
English Abstract
Abstract FW2.2 (standing for FRUIT WEIGHT 2.2), the founding member of the CELL NUMBER REGULATOR (CNR) gene family, was the first cloned gene underlying a quantitative trait locus (QTL) governing fruit size and weight in ...Read more >
Abstract FW2.2 (standing for FRUIT WEIGHT 2.2), the founding member of the CELL NUMBER REGULATOR (CNR) gene family, was the first cloned gene underlying a quantitative trait locus (QTL) governing fruit size and weight in tomato (Solanum lycopersicum). However, despite this discovery over 20 years ago, the molecular mechanisms by which FW2.2 negatively regulates cell division during fruit growth remain undeciphered. In the present study, we confirmed that FW2.2 is a membrane-anchored protein whose N- and C-terminal ends face the apoplast. We unexpectedly found that FW2.2 is located at plasmodesmata (PD). FW2.2 participates in the spatiotemporal regulation of callose deposition at PD and belongs to a protein complex which encompasses callose synthases. These results suggest that FW2.2 has a regulatory role in cell-to-cell communication by modulating PD transport capacity and trafficking of signaling molecules during fruit development.Read less <
English Keywords
Solanum lycopersicum
ANR Project
Comment la communication de cellule à cellule régule-t'elle la croissance du fruit ? - ANR-20-CE20-0002
Développment d'une infrastructure française distribuée coordonnée - ANR-10-INBS-0004
Développment d'une infrastructure française distribuée coordonnée - ANR-10-INBS-0004
Origin
Hal importedCollections