Dickeya parazeae Ech586
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ABSTRACT:
PROVIDER: PRJNA33667 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Genome sequencing and assembly of bacterial plant pathogen isolates
| PRJNA737524 | ENA
Project description:Genome wide profiling of HrpL-regulated genes in the necrotrophic plant pathogen Dickeya dadantii 3937
| PRJNA119681 | ENA
Project description:Indole-3-acetic acid (IAA) is a central phytohormone regulating plant growth and development and is increasingly recognized as an intra- and inter-kingdom signaling molecule that modulates diverse bacterial processes relevant during plant–microbe interactions. While IAA biosynthesis is widespread among plant-associated bacteria, the mechanisms through which this auxin regulates bacterial physiology and virulence, as well as those controlling its production, remain poorly understood. Here, we show that IAA synthesis deficiency in the globally relevant phytopathogen Dickeya dadantii triggers global transcriptional reprogramming and results in reduced virulence and fitness during plant infection. IAA was found to regulate the expression of the AaeXAB efflux pump, which mediates endogenous IAA secretion and confers resistance to plant defense–related phytohormones, including auxin and salicylic acid. This efflux system also contributes to successful plant infection and colonization in D. dadantii. Phylogenetic analyses revealed that the AaeXAB pump is commonly present among Pseudomonadota isolated from plant-associated environments. Moreover, IAA deficiency altered the expression of an indole-responsive regulator, suggesting cross-talk between IAA- and indole-mediated signaling networks. Our data also uncover a complex regulatory circuit coordination IAA production in D. dadantii, involving the ExpIR and Vfm quorum-sensing systems and the transcriptional regulators TyrR, TrpR, and LrhA. Collectively, our findings provide new insights into the role of IAA as a bacterial signal promoting plant adaptation and virulence. Targeting IAA biosynthesis and efflux pump activity may offer promising avenues for microbiome engineering and the development of anti-virulence strategies in phytopathogenesis.
2026-07-02 | GSE310590 | GEO
Project description:Genome sequencing of banana pathogen Dickeya zeae
| PRJNA194072 | ENA
Project description:Opportunistic pathogen that causes soft rot disease in plants
| PRJNA30 | ENA
Project description:We have analysed the global gene expression of the plant pathogen Dickeya dadantii 3937 when grown in vitro under different growth and stress conditions. A multi-factorial design with 32 different experimental conditions was constructed, with two biological replicates for each condition. Cells were grown to exponential phase or stationary phases in four different growth media: M63 supplemented with 0.2% sucrose as carbon source, with or without 0.2% (w/v) polygalacturonate (PGA) and with or without 0.1% Saintpaulia leaf extracts (1 g leaves in 1 L M63). Cells grown in these four media were subjected to different stresses: (i) acid stress, by an incubation of 15 min in the presence of 30 mM malic acid; (ii) oxidative stress, by an incubation of 15 min in the presence of 100 _M H2O2 or (iii) osmotic stress, by an incubation of 15 min in the presence of 300 mM NaCl. The micro-arrays used in this study were custom designed and produced by Roche NimbleGen, Inc. (Madison, WI) based on the annotated sequence of D. dadantii, available at Genbank accession number nM-! CP002038, which comprises 4597 CDS. The 4plex expression micro-arrays consist of 60-mer oligonucleotides, triplicated in three blocks on the array (5 oligonucleotides per CDS).
2015-04-16 | E-MTAB-541 | biostudies-arrayexpress