The study investigates how miR394 influences flowering time in Arabidopsis thaliana by combining transcriptomic profiling of mir394a mir394b double mutants with histological analysis of reporter lines. Bioinformatic analysis identified a novel lncRNA overlapping MIR394B (named MIRAST), and differential promoter activity of MIR394A and MIR394B suggests miR394 fine‑tunes flower development through transcription factor and chromatin remodeler regulation.

The study demonstrates that minor light-harvesting antenna complexes (Lhcb4, Lhcb5, Lhcb6) can serve as secondary targets for the sustained non‑photochemical quenching mechanism qH in Arabidopsis thaliana, though they are not essential for its induction. Using a series of mutant combinations, the authors show that loss of Lhcb6 reduces qH likely due to altered electron transport or thylakoid organization, indicating that minor antennae provide an additional photoprotective safety valve during prolonged stress.