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oai:riuma.uma.es:10630/356752026-02-03T11:18:39Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Martín-Pizarro, Carmen author Vallarino, José G. author Osorio-Algar, Sonia author Meco, Victoriano author Urrutia, María author Pillet, Jeremy author Casañal, Ana author Merchante, Catharina author Amaya, Iraida author Willmitzer, Lothar author Fernie, Alisdair R. author Giovannoni, James J. author Botella-Mesa, Miguel Ángel author Valpuesta-Fernández, Victoriano author Posé-Padilla, David author 2021-02-24 In contrast to climacteric fruits such as tomato, the knowledge on key regulatory genes controlling the ripening of straw- berry, a nonclimacteric fruit, is still limited. NAC transcription factors (TFs) mediate different developmental processes in plants. Here, we identified and characterized Ripening Inducing Factor (FaRIF), a NAC TF that is highly expressed and in- duced in strawberry receptacles during ripening. Functional analyses based on stable transgenic lines aimed at silencing FaRIF by RNA interference, either from a constitutive promoter or the ripe receptacle-specific EXP2 promoter, as well as overexpression lines showed that FaRIF controls critical ripening-related processes such as fruit softening and pigment and sugar accumulation. Physiological, metabolome, and transcriptome analyses of receptacles of FaRIF-silenced and overexpres- sion lines point to FaRIF as a key regulator of strawberry fruit ripening from early developmental stages, controlling abscisic acid biosynthesis and signaling, cell-wall degradation, and modification, the phenylpropanoid pathway, volatiles production, and the balance of the aerobic/anaerobic metabolism. FaRIF is therefore a target to be modified/edited to control the qual- ity of strawberry fruits. Carmen Martín-Pizarro, José G Vallarino, Sonia Osorio, Victoriano Meco, María Urrutia, Jeremy Pillet, Ana Casañal, Catharina Merchante, Iraida Amaya, Lothar Willmitzer, Alisdair R Fernie, James J Giovannoni, Miguel A Botella, Victoriano Valpuesta, David Posé, The NAC transcription factor FaRIF controls fruit ripening in strawberry, The Plant Cell, Volume 33, Issue 5, May 2021, Pages 1574–1593, https://doi.org/10.1093/plcell/koab070 https://hdl.handle.net/10630/35675 10.1093/plcell/koab070 Fresas The NAC transcription factor FaRIF controls fruit ripening in strawberry