{"database":"GEO","file_versions":[{"headers":{"Content-Type":["application/json"]},"body":{"files":{"Other":["ftp://ftp.ncbi.nlm.nih.gov/geo/series/GSE320nnn/GSE320482/"]},"type":"primary"},"statusCode":"OK","statusCodeValue":200}],"scores":null,"additional":{"omics_type":["Transcriptomics"],"species":["Solanum lycopersicum"],"gds_type":["Expression profiling by high throughput sequencing"],"full_dataset_link":["https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE320482"],"repository":["GEO"],"entry_type":["GSE"],"additional_accession":[]},"is_claimable":false,"name":"Far-red perception by vegetative organs and not fruits drives fruit growth responses in tomato plants","description":"Responses to far-red are mediated by phytochromes, specialised photoreceptors present in all organs of a tomato plant. Although fruit-localised phytochromes can influence starch and sugar metabolism, their involvement in modulating fruit growth responses to far-red is unknown. We explored whether fruit growth responses to far-red are driven by local far-red perception within the fruits, or by a systemic response initiated in the vegetative organs. We applied far-red exclusively to the fruiting trusses, from anthesis to ripening, to the vegetative organs, to both, or to neither. We quantified plant development and fruit growth responses to far-red and carried out a transcriptomic analysis to establish the temporal dynamics of far-red perception and signalling in leaves and fruits. Supplementing far-red to the vegetative organs led to a significant increase in ripe fruit weight and sugar concentration, regardless of the light conditions experienced by the trusses, whereas far-red supplementation to the generative organs alone had no measurable effect. This study establishes that far-red perception by vegetative organs drives fruit growth responses in tomato. Local responses to far-red included a transient increase in auxin concentration and upregulation of the auxin-signalling pathway in leaves, a conserved response to decreasing R:FR ratios. In fruits, early transcriptomic responses carried signatures of auxin, cytokinin, and gibberellin biosynthesis and signalling, suggesting a role for hormones as mediators of far-red-induced fruit responses. Finally, this work reveals how responses to far-red perception by vegetative organs promote sink strength and starch biosynthesis in early developing fruits, contributing to higher fruit weight and sugar concentration in ripe fruits.","dates":{"publication":"2026/07/22"},"accession":"GSE320482","cross_references":{"GSM":["GSM9544076","GSM9544032","GSM9544033","GSM9544077","GSM9544030","GSM9544074","GSM9544075","GSM9544031","GSM9544036","GSM9544037","GSM9544078","GSM9544034","GSM9544079","GSM9544035","GSM9544038","GSM9544039","GSM9544072","GSM9544073","GSM9544070","GSM9544071","GSM9544065","GSM9544021","GSM9544022","GSM9544066","GSM9544063","GSM9544064","GSM9544020","GSM9544025","GSM9544102","GSM9544069","GSM9544026","GSM9544103","GSM9544067","GSM9544023","GSM9544100","GSM9544101","GSM9544024","GSM9544068","GSM9544106","GSM9544029","GSM9544107","GSM9544104","GSM9544027","GSM9544105","GSM9544028","GSM9544108","GSM9544109","GSM9544061","GSM9544062","GSM9544060","GSM9544098","GSM9544054","GSM9544099","GSM9544055","GSM9544096","GSM9544052","GSM9544053","GSM9544097","GSM9544058","GSM9544059","GSM9544015","GSM9544056","GSM9544057","GSM9544018","GSM9544019","GSM9544016","GSM9544017","GSM9544090","GSM9544091","GSM9544050","GSM9544094","GSM9544095","GSM9544051","GSM9544092","GSM9544093","GSM9544087","GSM9544043","GSM9544044","GSM9544088","GSM9544085","GSM9544041","GSM9544042","GSM9544086","GSM9544047","GSM9544048","GSM9544045","GSM9544089","GSM9544046","GSM9544049","GSM9544080","GSM9544083","GSM9544084","GSM9544040","GSM9544081","GSM9544082"],"GPL":["33265"],"GSE":["320482"],"taxon":["Solanum lycopersicum"],"PMID":["[42289860]"]}}