Submitted to: PhytoFrontiers
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/10/2022
Publication Date: 12/16/2022
Citation: Burbank, L.P., Ochoa, J.C. 2022. Evidence for elicitation of an oxidative burst in Vitis vinifera by Peptides derived from a Xylella fastidiosa cold shock protein peptide csp20. PhytoFrontiers. 2(4):339-341. https://doi.org/10.1094/PHYTOFR-05-22-0048-SC.
Interpretive Summary: Plants can detect pathogenic organisms and initiate a defense reaction, part of which is production of reactive oxygen species such as peroxides. There is a wide range of pathogen-associated molecules that can be detected by plants, but for many plant species only a small number of these have been studied. Identifying additional pathogen molecules that trigger plant immune response can be used to further identify and develop plants that are resistant to disease. Xylella fastidiosa is an important bacterial pathogen of several agricultural crops including table and wine grapes. Although some pathogen recognition pathways have been identified for X. fastidiosa in host plants, there are likely several others that could be exploited for increasing plant resistance to this pathogen. This study identified a cold shock protein component (Xfcsp20) from X. fastidiosa that can be recognized by grapevine tissue, leading to production of reactive oxygen species, an indication of plant immune response.
Technical Abstract: Plant response to pathogen challenge involves recognition by specific receptors of conserved molecular patterns associated with pathogenic organisms. Understanding a wider range of pathogen detection pathways in different plant species is valuable for identification and development of pathogen-resistant plant material. Xylella fastidiosa is an important bacterial pathogen of several agricultural crops including table and wine grapes. Although some pathogen recognition pathways have been identified for X. fastidiosa in host plants, there are likely several other molecular interactions that could be exploited for increasing plant resistance to this pathogen. This study identified a conserved bacterial cold shock protein component (Xfcsp20) as an elicitor of reactive oxygen species production by grapevine plant tissue, an indication of pathogen recognition response. Characterization of Xfcsp20 as an elicitor of an oxidative burst in grapevine hosts of X. fastidiosa will be of use to continued work in the areas of bacterial-plant interactions and plant resistance.