10.18453/rosdok_id00005424 Araguirang, Gali Gali Araguirang http://d-nb.info/gnd/1397254076 https://orcid.org/0000-0002-1600-4183 Universität Rostock 2025 500 Natural sciences 570 Life science 580 Botanical sciences 2025 en https://purl.uni-rostock.de/rosdok/id00005424 urn:nbn:de:gbv:28-rosdok_id00005424-6 Acclimation enables plants to survive stress via mechanisms like anthocyanin production. A genetic screen identified ILP1, an upstream regulator of anthocyanin biosynthesis with poorly understood metabolic roles. Multi-omics and physiological analyses showed that ilp1 mutants under high light accumulate excess sugars and low amino acids, disrupting carbon–nitrogen balance. ILP1, particularly its GC-rich DNA-binding domain, represses sugar buildup. Spliceosomal mutants NTR1, PRL1, and PRP8 share similar phenotypes, revealing the spliceosome’s key role in metabolic regulation during acclimation.