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Blue light perception by epiphytic Pseudomonas syringae drives chemoreceptor expression enabling efficient plant infection

ABSTRACT: Blue light perception by epiphytic Pseudomonas syringae drives chemoreceptor expression enabling efficient plant infection

PROVIDER: PRJNA638604 | ENA |

REPOSITORIES: ENA

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Blue light perception by epiphytic Pseudomonas syringae drives chemoreceptor expression enabling efficient plant infection

Project description:Blue light perception by epiphytic Pseudomonas syringae drives chemoreceptor expression enabling efficient plant infection

2020-10-31 | GSE152188 | GEO

Blue-light perception by epiphytic Pseudomonas syringae drives chemoreceptor expression, enabling efficient plant infection.

Project description: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.

| S-EPMC7694672 | biostudies-literature

Whole transcriptome analysis for blue light-induced eye damage in mice

Project description:We identified 737 differentially expressed genes, including 430 upregulated genes and 307 downregulated genes, by calculating the gene FPKM in each sample and conducting differential gene analysis. Gene ontology analysis and KEGG pathway enrichment analysis suggested that blue light influenced visual perception, sensory perception of light stimulus, phototransduction, and JAK-STAT signaling pathways. Differential lncRNA, circRNA and miRNA analysis suggested that blue light exposure affected pathways for retinal cone cell development and phototransduction, among others.

2020-08-24 | GSE149549 | GEO

Phototropin connects blue light perception to starch metabolism in green algae

Project description:In photosynthetic organisms light acts as an environmental signal to control their development and physiology, and as energy source to drive the conversion of CO2 into carbohydrates used for growth or storage. The main storage carbohydrate in green algae is starch, which accumulates during the day and is broken down at night to meet cellular energy demands. The signalling role of light quality in the regulation of starch accumulation remains unexplored. Here, we report that in the model green alga Chlamydomonas reinhardtii blue light perceived by the photoreceptor PHOTOTROPIN suppresses starch accumulation. To gain more insight into the molecular mechanism underlying the PHOT-mediated light perception and starch accumulation, we applied we applied mass spectrometry (MS)-based quantitative proteomics to compare WT and phot cells grown in asynchronous photoautotrophic conditions under low light.

2025-01-29 | PXD046943 | Pride

epiphytic biofilm

Project description:epiphytic biofilm Raw sequence reads

| PRJNA1008119 | ENA

phyllosphere epiphytic microorganisms

Project description:phyllosphere epiphytic microorganisms Raw sequence reads

| PRJNA1240103 | ENA

Seaweed epiphytic bacteria

Project description:Seaweed epiphytic bacteria Raw sequence reads

| PRJNA1074237 | ENA

Epiphytic microbial community

Project description:Epiphytic microbial community Raw sequence reads

| PRJNA1144507 | ENA

NPR1 promotes blue light–induced plant photomorphogenesis by ubiquitinating and degrading PIF4

Project description:Light is a major determinant of plant growth and survival. NONEXPRESSER OF PATHOGENESIS-RELATED GENES 1 (NPR1) acts as a receptor for salicylic acid (SA) and serves as the key regulator of SA-mediated immune responses. However, the mechanisms by which plants integrate light and SA signals in response to environmental changes, as well as the role of NPR1 in regulating plant photomorphogenesis, remain poorly understood. This study shows that SA promotes plant photomorphogenesis by regulating PHYTOCHROME INTERACTING FACTOR 4 (PIF4). Specifically, NPR1 promotes photomorphogenesis under blue light by facilitating the degradation of PIF4 through light-induced polyubiquitination. NPR1 acts as a substrate adaptor for the CULLIN3-based E3 ligase, which ubiquitinates PIF4 at Lys129, Lys252, and Lys428, and leading to PIF4 degradation via the 26S proteasome pathway. Genetically, PIF4 is epistatic to NPR1 in the regulation of blue light-–induced photomorphogenesis, suggesting it acts downstream of NPR1. Furthermore, cryptochromes mediate the polyubiquitination of PIF4 by NPR1 in response to blue light by promoting the interaction and ubiquitination between NPR1 and PIF4. Transcriptome analysis revealed that, under blue light, NPR1 and PIF4 coordinately regulate numerous downstream genes related to light and auxin signaling pathways. Overall, these findings unveil a role for NPR1 in photomorphogenesis, highlighting a mechanism for post-translational regulation of PIF4 in response to blue light. This mechanism plays a pivotal role in the fine-tuning of plant development, enabling plants to adapt to complex environmental changes.

2024-11-26 | GSE268390 | GEO

Epiphytic bacterial communities of Macrocystis

Project description:Epiphytic bacterial communities of Macrocystis

| PRJEB28772 | ENA