Sensory Perception of Fluctuating Light in Arabidopsis.

ABSTRACT: When exposed to shade from neighbours, competitive plants modify their growth patterns to improve access to light. In dense plant stands, ranging from forests to humid grasslands and crops, shade is interrupted by sunflecks penetrating the canopy. Relatively infrequent, minute-scale interruptions can significantly contribute to the daily light input. However, given the short duration and the time gap between these low frequency sunflecks (LFS), whether plants can sense them was unknown. Here, we demonstrate that phytochrome B (phyB), cryptochrome 1 (cry1), cry2 and UV RESISTANCE LOCUS 8 (UVR8) cooperatively perceive LFS to reduce hypocotyl growth in Arabidopsis thaliana. LFS also enhanced the expression of photosynthetic and photo-protective genes and initiated pre-emptive acclimation to w

SUBMITTER: Belmonte A 

PROVIDER: S-EPMC12319293 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature