The auxin-responsive transcription factor SlDOF9 regulates inflorescence and flower development in tomato
BOUZAYEN, Mondher
LRSV-Génomique et Biotechnologie des Fruits [LRSV-GBF]
Chongqing University [Chongqing]
< Réduire
LRSV-Génomique et Biotechnologie des Fruits [LRSV-GBF]
Chongqing University [Chongqing]
Langue
en
Article de revue
Ce document a été publié dans
Nature Plants. 2022-04-14, vol. 8, n° 4, p. 419-433
Nature Publishing Group
Résumé en anglais
Understanding the mechanisms underlying differentiation of inflorescence and flower meristems is essential towards enlarging our knowledge of reproductive organ formation and to open new prospects for improving yield traits. ...Lire la suite >
Understanding the mechanisms underlying differentiation of inflorescence and flower meristems is essential towards enlarging our knowledge of reproductive organ formation and to open new prospects for improving yield traits. Here, we show that SlDOF9 is a new modulator of floral differentiation in tomato. CRISPR/Cas9 knockout strategy uncovered the role of SlDOF9 in controlling inflorescence meristem and floral meristem differentiation via the regulation of cell division genes and inflorescence architecture regulator LIN. Tomato dof9-KO lines have more flowers in both determinate and indeterminate cultivars and produce more fruit upon vibration-assisted fertilization. SlDOF9 regulates inflorescence development through an auxin-dependent ARF5-DOF9 module that seems to operate, at least in part, differently in Arabidopsis and tomato. Our findings add a new actor to the complex mechanisms underlying reproductive organ differentiation in flowering plants and provide leads towards addressing the diversity of factors controlling the transition to reproductive organs.< Réduire
Mots clés en anglais
Plant development
Plant genetics
Project ANR
La parthénocarpie comme une stratégie pour surmonter la baisse de nouaison et du rendement en fruits chez la tomate dans des conditions de stress thermique - ANR-16-CE20-0014
Origine
Importé de halUnités de recherche