Light cues induce protective anticipation of environmental water loss in terrestrial bacteria.

ABSTRACT: The ecological significance of light perception in nonphotosynthetic bacteria remains largely elusive. In terrestrial environments, diurnal oscillations in light are often temporally coupled to other environmental changes, including increased temperature and evaporation. Here, we report that light functions as an anticipatory cue that triggers protective adaptations to tolerate a future rapid loss of environmental water. We demonstrate this photo-anticipatory stress tolerance in leaf-associated Pseudomonas syringae pv. syringae (Pss) and other plant- and soil-associated pseudomonads. We found that light influences the expression of 30% of the Pss genome, indicating that light is a global regulatory signal, and this signaling occurs almost entirely via a bacteriophytoch

SUBMITTER: Hatfield BM 

PROVIDER: S-EPMC10515139 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature