A Leaf Lipoxygenase of Potato Induced Specifically by Pathogen Infection
作者： Michael V. Kolomiets , Hao Chen , Richard J. Gladon , E.J. Braun , David J. Hannapel
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摘要: Lipoxygenase (LOX) activity has been identified consistently during pathogen-induced defense responses. Here we report the involvement of a specific leaf LOX gene potato (Solanum tuberosum), designated POTLX-3 (GenBank/EMBL accession no. U60202), in responses against pathogens. The sequence does not match any other genes and greatest to tobacco that contributes resistance mechanism Phytophthora parasitica var nicotianae. transcript accumulation was detected untreated, healthy organs or wounded mature leaves. mRNA induced leaves treated with ethylene methyl jasmonate infected either virulent avirulent strains infestans, causal agent late blight. During response, within 6 hours, increased steadily through 24 its continued accumulate for week after inoculation. In contrast, when plant susceptible P. induction response inoculation inconsistent delayed. assayed an incompatible interaction peaked 3 days earlier than compatible interaction. also hypersensitive development caused by pathogen Pseudomonas syringae pv phaseolicola. Our results show may be involved specifically infection.
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