Weinberger, Florian , Pohnert, Georg, Kloareg, Bernard and Potin, Philippe (2002) A Signal Released by an Endophytic Attacker Acts as a Substrate for a Rapid Defensive Reaction of the Red Alga Chondrus crispus. ChemBioChem, 3 (12). pp. 1260-1263. DOI 10.1002/1439-7633(20021202)3:12<1260::AID-CBIC1260>3.0.CO;2-5.

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Abstract

A backfiring weapon: The release of H2O2 by an amino acid oxidase is the early defensive reaction of the red alga Chondrus crispus against the endophytic green algal pathogen Acrochaete operculata (see scheme). This reaction can be induced by L-asparagine, which is released by the attacker when it recognises host cell-wall κ-carrageenan oligosaccharides. The induced signal of the attacker thus serves directly as the substrate for the production of the defensive metabolite.

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