RT Journal Article
T1 Blue-light perception by epiphytic Pseudomonas syringae drives chemoreceptor expression, enabling efficient plant infection.
A1 Santamaría-Hernando, Saray
A1 Cerna-Vargas, Jean Paul
A1 Martínez-García, Pedro Manuel
A1 de Francisco-de Polanco, Sofía
A1 Nebreda, Sandra
A1 Rodríguez-Palenzuela, Pablo
A1 Rodríguez-Herva, José Juan
A1 López-Solanilla, Emilia
K1 Pseudomonas syringae
K1 chemosensory proteins
K1 light perception
K1 virulence
AB Adaptation and efficient colonization of the phyllosphere are essential processes for the switch to an epiphytic stage in foliar bacterial pathogens. Here, we explore the interplay among light perception and global transcriptomic alterations in epiphytic populations of the hemibiotrophic pathogen Pseudomonas syringae pv. tomato DC3000 (PsPto) following contact with tomato leaves. We found that blue-light perception by PsPto on leaf surfaces is required for optimal colonization. Blue light triggers the activation of metabolic activity and increases the transcript levels of five chemoreceptors through the function of light oxygen voltage and BphP1 photoreceptors. The inactivation of PSPTO_1008 and PSPTO_2526 chemoreceptors causes a reduction in virulence. Our results indicate that during PsPto interaction with tomato plants, light perception, chemotaxis, and virulence are highly interwoven processes.
YR 2020
FD 2020-10-07
LK http://hdl.handle.net/10668/16380
UL http://hdl.handle.net/10668/16380
LA en
DS RISalud
RD Apr 17, 2025