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Sporulation of H. arabidopsidis on Arabidopsis pmr4-1 Single and Double Mutants after d- and l-Homoserine (10 mM) Application.
l-homoserine-induced resistance is unaffected in the pmr4 mutants (compared with wild-type Col-0), indicating that the pathogen-induced callose synthase PMR4 is not required for homoserine-induced resistance. The average number (with se, n = 20) of conidiophores/seedling is displayed. Similar results were obtained in a separate independent experiment.
