octadecadienoic acid/ジャガイモ

Lipoxygenases in plants have been implicated in the activation of defense responses against injury/infection. Pathogen-derived polyunsaturated fatty acids, such as arachidonic acid, eicosapentaenoic acid and their metabolites have been shown to elicit defense responses against pathogen infection in

1. 9-D-Hydroperoxy-octadeca-trans-10, cis-12-dienoic acid (formed from linoleic acid by potato lipoxygenase) is enzymically converted to a divinyl ether derivative (colneleic acid) by extracts of potato tuber. 2. the isomeric 13-L-hydroperoxide (formed from linoleic acid by soyabean lipoxygenase) is

1. Crude extracts and partially purified enzyme preparations from potato tubers catalyse, at pH 5-7, the conversion of linoleic acid hydroperoxides to a range of oxygenated fatty acid derivatives. 2. 9-D- and 13-L-hydroperoxide isomers are converted at similar rates to equivalent (isomeric)

[1-14C]Linoleic acid was incubated with a whole homogenate preparation from potato stolons. The reaction product contained four major labeled compounds, i.e., the alpha-ketol 9-hydroxy-10-oxo-12(Z)-octadecenoic acid (59%), the epoxy alcohol 10(S),11(S)-epoxy-9(S)-hydroxy-12(Z)-octadecenoic acid

CONCLUSIONS Potato and tobacco cells are differentially suited to study oxylipin pathway and elicitor-induced responses. Synthesis of oxylipins via the lipoxygenase (LOX) pathway provides plant cells with an important class of signaling molecules, related to plant stress responses and innate

Potato tubers are shown to contain a unique lipoxygenase pathway to form 9-hydroperoxy-10,12-octadecadienoic acid (9-HPODE) from linoleic acid. Here, we report the metabolic pathway of 9-HPODE in the cytosolic fraction and the characterization of enzymes involved in the conversion of metabolites.

Potato (Solanum tuberosum) plants are rich in 9-lipoxygenase, which converts linoleic acid and alpha-linolenic acid to 9S-hydroperoxy-10E,12Z-octadecadienoic acid (9-HPOD) and 9S-hydroperoxy-10E,12Z,15Z-octadecatrienoic acid (9-HPOT) respectively. The allene oxide synthase (AOS) involved in

Potato 5-lipoxygenase (5-PLO) catalyzes the reduction of 13(S)-hydroperoxy-9Z,11E-octadecadienoic acid (13-HPOD) in the presence of vitamin E. I mol of vitamin E is required to consume 2 mol of 13-HPOD. The mechanism of the 5-PLO-catalyzed oxidation of vitamin E by 13-HPOD is similar to that

Lipoxygenases are key enzymes in the synthesis of oxylipins and play an important role in the response of plants to wounding and pathogen attack. In cultured potato cells treated with elicitor from Phytophthora infestans, the causal agent of late blight disease, transcripts encoding a linoleate

Allene oxide synthase (AOS) enzymes are members of the cytochrome P450 enzyme family, sub-family CYP74. Here we describe the isolation of three cDNAs encoding AOS from potato (StAOS1-3). Based on sequence comparisons, they represent members of either the CYP74A (StAOS1 and 2) or the CYP74C (StAOS3)

The mechanism of the biosynthesis of 12-oxo-10,15(Z)-phytodienoic acid (12-oxo-PDA) from 13(S)-hydroperoxy-9(Z),11(E),15(Z)-octadecatrienoic acid in preparations of corn (Zea mays L.) was studied. In the initial reaction the hydroperoxide was converted into an unstable allene oxide,

Polymers based on renewable resources have become increasingly important. The natural functionalization of fats and oils enables an easy access to interesting monomeric building blocks, which in turn transform the derivative biopolymers into high-performance materials. Unfortunately, interesting

The CYP74B subfamily of fatty acid hydroperoxide transforming cytochromes P450 includes the most common plant enzymes. All CYP74Bs studied yet except the CYP74B16 (flax divinyl ether synthase, LuDES) and the CYP74B33 (carrot allene oxide synthase, DcAOS) are 13-hydroperoxide lyases (HPLs, synonym:

Oxylipin biosynthesis by fungi is catalyzed by both the lipoxygenase (LOX) family and the linoleate diol synthase (LDS) family of the peroxidase-cyclooxygenase superfamily. Rhizoctonia solani, a pathogenic fungus, infects staple crops such as potato and rice. The genome predicts three genes with

Currently, knowledge about the impact of long-term intake of high resistant starch diet on pig hindgut microbiota and metabolite profile is limited. In this study, a combination of the pyrosequencing and the mass spectrometry (MS)-based metabolomics techniques were used to investigate the effects of