The role of AtPP2-A3 and AtPP2-A8 genes encoding Nictaba-related lectin domains in the defense response of Arabidopsis thaliana to Heterodera schachtii

• DOI: 10.1007/s00425-023-04196-y
• Publication Date: 2023-07-08T03:22:06Z
• Authors: Kamila Wojszko; Elżbieta Różańska; Mirosław Sobczak; Karol Kuczerski; Tomasz Krępski; Anita Wiśniewska
• Keywords: Heterodera schachtii; Syncytium; Nematode infection

Expression levels of AtPP2-A3 and AtPP2-A8 are reduced in syncytia induced by Heterodera schachtii decline their expression decreases host susceptibility, whereas overexpression promotes susceptibility to parasite. Plant-parasitic nematodes cause huge crop losses worldwide. is a sedentary cyst-forming nematode that induces feeding site called syncytium via the delivery secreted chemical substances (effectors) cells, which modulate genes phytohormone regulation patterns. Genes encoding Nictaba-related lectin domain have been found among plant with downregulated during development H. Arabidopsis thaliana roots. To investigate role two selected response beet cyst parasitism, mutants plants overexpressing or were infected, promoter activity protein localization analyzed. In wild-type plants, expressed only roots, especially cortex rhizodermis. After infection, was switched off regions surrounding developing syncytium. Astonishingly, more susceptible infection than less susceptible. Based on these results changes patterns after treatments different stress phytohormones, we postulate play important roles defense infection.