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- W2282945495 abstract "Summary The functions of calcium (Ca) in bacteria are less characterized than in eukaryotes, where its role has been studied extensively. The plant‐pathogenic bacterium Xylella fastidiosa has several virulence features that are enhanced by increased Ca concentrations, including biofilm formation. However, the specific mechanisms driving modulation of this feature are unclear. Characterization of biofilm formation over time showed that 4 mM Ca supplementation produced denser biofilms that were still developing at 96 h, while biofilm in non‐supplemented media had reached the dispersal stage by 72 h. To identify changes in global gene expression in X. fastidiosa grown in supplemental Ca, RNA‐Seq of batch culture biofilm cells was conducted at three 24‐h time intervals. Results indicate that a variety of genes are differentially expressed in response to Ca, including genes related to attachment, motility, exopolysaccharide synthesis, biofilm formation, peptidoglycan synthesis, regulatory functions, iron homeostasis, and phages. Collectively, results demonstrate that Ca supplementation induces a transcriptional response that promotes continued biofilm development, while biofilm cells in nonsupplemented media are driven towards dispersion of cells from the biofilm structure. These results have important implications for disease progression in planta, where xylem sap is the source of Ca and other nutrients for X. fastidiosa ." @default.
- W2282945495 created "2016-06-24" @default.
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- W2282945495 creator A5065661844 @default.
- W2282945495 date "2016-03-21" @default.
- W2282945495 modified "2023-10-01" @default.
- W2282945495 title "Calcium transcriptionally regulates the biofilm machinery of<i>Xylella fastidiosa</i>to promote continued biofilm development in batch cultures" @default.
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- W2282945495 doi "https://doi.org/10.1111/1462-2920.13242" @default.
- W2282945495 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26913481" @default.
- W2282945495 hasPublicationYear "2016" @default.
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