%0 Journal Article %T Accurate and easy method for systemin quantification and examining metabolic changes under different endogenous levels %A Jordi Gamir %A Mar¨ªa J. Pozo %A Paloma S¨¢nchez-Bel %A Victoria Pastor %A V¨ªctor Flors %J Archive of "Plant Methods". %D 2018 %R 10.1186/s13007-018-0301-z %X The online version of this article (10.1186/s13007-018-0301-z) contains supplementary material, which is available to authorized users %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5918566/