Transition to ripening in tomato requires hormone-controlled genetic reprogramming initiated in gel tissue

• DOI: 10.1093/plphys/kiac464
• Publication Date: 2022-10-06T13:51:15Z
• Authors: Ximena Chirinos; Shiyu Ying; Maria Aurineide R...; Elie Maza; Anis Djari; Guojian Hu; Mingchun Liu; Eduardo Purgatto; Sylvie Fournier; Farid Regad; Mondher Bouzayen; Julien Pirrello
• Keywords: Reprogramming; Plant hormone

Abstract Ripening is the last stage of developmental program in fleshy fruits. During this phase, fruits become edible and acquire their unique sensory qualities post-harvest potential. Although our knowledge mechanisms that regulate fruit ripening has improved considerably over past decades, processes trigger transition to remain poorly deciphered. While transcriptomic profiling tomato (Solanum lycopersicum L.) date mainly focused on changes occurring pericarp tissues between Mature Green Breaker stages, study addresses Early Late stages gel separately. The data showed shift from an inability initiate capacity undergo full requires extensive reprogramming takes place first locular before extending pericarp. Genome-wide revealed wide diversity transcription factor (TF) families engaged global gene expression identified those specifically regulated at but not pericarp, thereby providing potential targets toward deciphering initial factors events ripening. also uncovered reformed homeostasis for most plant hormones, highlighting multihormonal control initiation. Our unveil antagonistic roles ethylene auxin during onset show treatment delays via impairing genes required System-2 autocatalytic production essential climacteric This unveils detailed features associated with shows occur a proceed.