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Microscopic Evaluation Of Interactions Between Varieties Of Arabidopsis Thaliana Challenged By Peronospora Parasitica, Fi̇gen Mert Türk
Microscopic Evaluation Of Interactions Between Varieties Of Arabidopsis Thaliana Challenged By Peronospora Parasitica, Fi̇gen Mert Türk
Turkish Journal of Agriculture and Forestry
Peronospora parasitica (Pers ex Fr.) Pers. is an obligate biotrophic pathogen that causes downy mildew in Arabidopsis thaliana (L.) Heynh. In this study, cotyledons of four A. thaliana varieties were inoculated with the Cala2 isolate of P. parasitica and the degree of susceptibility was observed under the microscope 1, 2, 3 and 7 days after inoculation (DAI). Microscopic examination of infected tissues revealed that early restriction of the pathogen was accompanied by a hypersensitive response (HR) characterised by autofluorescence under UV or blue light excitation. All haustoria, if visible at all, formed in the cells that underwent the HR in …