Oxylipin profiling in pathogen-infected potato leaves
作者： Cornelia Göbel , Ivo Feussner , Mats Hamberg , Sabine Rosahl
DOI: 10.1016/S1388-1981(02)00268-8
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摘要: Plants respond to pathogen attack with a multicomponent defense response. Synthesis of oxylipins via the lipoxygenase (LOX) pathway appears be an important factor for establishment resistance in number pathosystems. In potato cells, pathogen-derived elicitors preferentially stimulate 9-LOX-dependent metabolism polyunsaturated fatty acids (PUFAs). Here we show by oxylipin profiling that plants react infection increases amounts 9-LOX-derived 9,10,11- and 9,12,13-trihydroxy derivatives linolenic acid (LnA), divinyl ethers colnelenic (CnA) colneleic (CA) as well 9-hydroxy acid. Accumulation these compounds is faster more pronounced during interaction phytopathogenic bacterium Pseudomonas syringae pv. maculicola, which does not lead disease, compared Phytophthora infestans, causal agent late blight disease. Jasmonic (JA), 13-LOX-derived oxylipin, accumulates leaves after infiltration P. but infestans.
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