Jasmonates during senescence: signals or products of metabolism?
Jasmonic acid and derivatives are oxylipin signaling compounds derived from linolenic acid. Jasmonates accumulate during natural and dark-induced senescence but the increase in these compounds is not essential for the initiation or progression of these senescence processes. Here we report that during natural and dark-induced senescence the increase in jasmonate levels does not trigger jasmonate signaling. Furthermore we provide evidence that jasmonate production might result from membrane turnover during dark-induced senescence.
Julius-von-Sachs-Institute for Biosciences, Pharm. Biology, Biocenter, University of Wuerzburg, Wuerzburg, Germany.
Martin A
MA
Seltmann
Wiebke
W
Hussels
Susanne
S
Berger
D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D003517:Cyclopentanes / Q000378:metabolism*; D004951:Esterification; D018506:Gene Expression Regulation, Plant / Q000187:drug effects / Q000528:radiation effects; D008027:Light; D054883:Oxylipins / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D015398:Signal Transduction / Q000502:physiology*; D013012:Sorbitol / Q000494:pharmacology; D013995:Time; D013997:Time Factors; D017962:alpha-Linolenic Acid / Q000378:metabolism
D029681:Arabidopsis Proteins; D003517:Cyclopentanes; D054883:Oxylipins; D017962:alpha-Linolenic Acid; D013012:Sorbitol; C011006:jasmonic acid