PuSH - Publication Server of Helmholtz Zentrum München: Expression of antimicrobial peptides under control of a camalexin-biosynthetic promoter confers enhanced resistance against <em>Pseudomonas syringae</em>.

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Chapman, A.* ; Lindermayr, C. ; Glawischnig, E.*

Expression of antimicrobial peptides under control of a camalexin-biosynthetic promoter confers enhanced resistance against Pseudomonas syringae.

Phytochemistry 122, 76-80 (2016)

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In Arabidopsis thaliana phytoalexin biosynthesis is tightly regulated. The camalexin biosynthetic gene CYP71B15/PAD3 is highly expressed in response to pathogens and specific abiotic triggers, while constitutive expression is very low. Based on this property we expressed artificial antimicrobial peptides under control of the CYP71B15 promoter avoiding potential toxic effects to the plant related to constitutive expression. Significant and substantial growth inhibition of Pseudomonas syringae was observed, demonstrating that expression of these peptides under control of a phytoalexin promoter is an effective approach for enhancement of resistance against bacterial pathogens.

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