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The perception and evolution of flagellin, cold shock protein and elongation factor Tu from vector‐borne bacterial plant pathogens
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The perception and evolution of flagellin, cold shock protein and elongation factor Tu from vector‐borne bacterial plant pathogens
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Journal Article
The perception and evolution of flagellin, cold shock protein and elongation factor Tu from vector‐borne bacterial plant pathogens
2024
Overview
Vector‐borne bacterial pathogens cause devastating plant diseases that cost billions of dollars in crop losses worldwide. These pathogens have evolved to be host‐ and vector‐dependent, resulting in a reduced genome size compared to their free‐living relatives. All known vector‐borne bacterial plant pathogens belong to four different genera: ‘Candidatus Liberibacter’, ‘Candidatus Phytoplasma’, Spiroplasma and Xylella. To protect themselves against pathogens, plants have evolved pattern recognition receptors that can detect conserved pathogen features as non‐self and mount an immune response. To gain an understanding of how vector‐borne pathogen features are perceived in plants, we investigated three proteinaceous features derived from cold shock protein (csp22), flagellin (flg22) and elongation factor Tu (elf18) from vector‐borne bacterial pathogens as well as their closest free‐living relatives. In general, vector‐borne pathogens have fewer copies of genes encoding flagellin and cold shock protein compared to their closest free‐living relatives. Furthermore, epitopes from vector‐borne pathogens were less likely to be immunogenic compared to their free‐living counterparts. Most Liberibacter csp22 and elf18 epitopes do not trigger plant immune responses in tomato or Arabidopsis. Interestingly, csp22 from the citrus pathogen ‘Candidatus Liberibacter asiaticus’ triggers immune responses in solanaceous plants, while csp22 from the solanaceous pathogen ‘Candidatus Liberibacter solanacearum’ does not. Our findings suggest that vector‐borne plant pathogenic bacteria evolved to evade host recognition. Vector‐borne bacterial plant pathogens generally exhibit fewer immunogenic proteinaceous features compared to their free‐living relatives.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc
Subject
/ Bacteria
/ Candidatus Liberibacter asiaticus
/ Candidatus Liberibacter solanacearum
/ Citrus
/ Cold
/ Disease
/ Epitopes
/ genome
/ Genomes
/ Insects
/ Kinases
/ microbe‐associated molecular patterns
/ Original
/ pattern recognition receptor
/ Pattern recognition receptors
/ Proteins
/ Taxonomy
/ Tomatoes
/ Xylella
