Abstract
In barley leaves, 13-lipoxygenases (13-LOXs) are induced by salicylate (SA) and jasmonate. Here, we show by metabolic profiling that upon SA treatment, free linolenic acid and linoleic acid accumulate in a 10:1 ratio reflecting their relative occurrence in leaf tissues. Furthermore, 13-LOX-derived products are formed and specifically directed into the reductase branch of the LOX pathway leading mainly to the accumulation of (13S,9Z,11E,15Z)-13-hydroxy-9, 11,15-octadecatrienoic acid (13-HOT). Under these conditions, no accumulation of other products of the LOX pathway has been found. Moreover, exogenously applied 13-HOT led to PR1b expression suggesting for the time a role of hydroxy polyenoic fatty acid derivatives in plant defense reactions.
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Claims 6
Claim · model-written summary
Salicylate induced barley leaf 13-lipoxygenases.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- salicylate (SA)e0
- Gene
- 13-lipoxygenases (13-LOXs)e0
- Outcome
- 13-lipoxygenases (13-LOXs)e0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“In barley leaves, 13-lipoxygenases (13-LOXs) are induced by salicylate (SA) and jasmonate”
Claim · model-written summary
Jasmonate induced barley leaf 13-lipoxygenases.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- jasmonatee0
- Gene
- 13-lipoxygenases (13-LOXs)e0
- Outcome
- 13-lipoxygenases (13-LOXs)e0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In barley leaves, 13-lipoxygenases (13-LOXs) are induced by salicylate (SA) and jasmonate”
Claim · model-written summary
Salicylate caused free linolenic acid and linoleic acid to accumulate in a 10:1 ratio.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- SA treatmente0
- Outcome
- free linolenic acid and linoleic acide0
- Direction
- accumulatee0
- Value
- 10:1 ratioe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“upon SA treatment, free linolenic acid and linoleic acid accumulate in a 10:1 ratio”
t0“barley”
Claim · model-written summary
Salicylate directed 13-LOX products into the reductase branch, mainly accumulating 13-HOT.
- Taxon
- barleyHordeum vulgaret0
- Gene
- 13-LOXe0
- Outcome
- accumulation of (13S,9Z,11E,15Z)-13-hydroxy-9, 11,15-octadecatrienoic acid (13-HOT)e0
- Qualifier
- reductase branch of the LOX pathwaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“13-LOX-derived products are formed and specifically directed into the reductase branch of the LOX pathway leading mainly to the accumulation of (13S,9Z,11E,15Z)-13-hydroxy-9, 11,15-octadecatrienoic acid (13-HOT)”
t0“barley”
Claim · model-written summary
Other LOX pathway products did not accumulate under salicylate treatment.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- other products of the LOX pathwaye0
- Direction
- no accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under these conditions, no accumulation of other products of the LOX pathway has been found”
t0“barley”
Claim · model-written summary
Exogenous 13-HOT induced PR1b expression.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- exogenously applied 13-HOTe0
- Gene
- PR1be0
- Outcome
- PR1b expressione0
- Direction
- led toe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied 13-HOT led to PR1b expression”
t0“barley”