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The defense metabolite, allyl glucosinolate, modulates Arabidopsis thaliana biomass dependent upon the endogenous glucosinolate pathway

AutorFrancisco Candeira, Marta ; Joseph, Bindu; Caligagan, Hart; Li, Baohua; Corwin, Jason A.; Lin, Catherine; Kerwin, Rachel; Burow, Meike; Kliebenstein, D. J.
Palabras claveArabidopsis
Allyl GSL
GSL-induced responses
Plant growth
Defense metabolism
Fecha de publicación1-jun-2016
EditorFrontiers Media
CitaciónFrontiers in Plant Science 7: 774 (2016)
ResumenGlucosinolates (GSLs) play an important role in plants as direct mediators of biotic and abiotic stress responses. Recent work is beginning to show that the GSLs can also inducing complex defense and growth networks. However, the physiological significance of these GSL-induced responses and the molecular mechanisms by which GSLs are sensed and/or modulate these responses are not understood. To identify these potential mechanisms within the plant and how they may relate to the endogenous GSLs, we tested the regulatory effect of exogenous allyl GSL application on growth and defense metabolism across sample of Arabidopsis thaliana accessions. We found that application of exogenous allyl GSL had the ability to initiate changes in plant biomass and accumulation of defense metabolites that genetically varied across accessions. This growth effect was related to the allyl GSL side-chain structure. Utilizing this natural variation and mutants in genes within the GSL pathway we could show that the link between allyl GSL and altered growth responses are dependent upon the function of known genes controlling the aliphatic GSL pathway.
Descripción14 páginas, 8 figuras y 3 tablas.
Versión del editorhttp://dx.doi.org/10.3389/fpls.2016.00774
URIhttp://hdl.handle.net/10261/169471
DOI10.3389/fpls.2016.00774
E-ISSN1664-462X
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