%0 Journal Article
%T trans-Cinnamic acid-induced leaf expansion involves an auxin-independent component
%A Jan A. Smalle
%A Jasmina Kurepa
%J Communicative & Integrative Biology
%D 2019
%R https://doi.org/10.1080/19420889.2019.1605814
%X ABSTRACT The phenylpropanoid pathway, the source of a large array of compounds with diverse functions, starts with the synthesis of trans-cinnamic acid (t-CA) that is converted by cinnamate-4-hydroxylase (C4H) into p-coumaric acid. We have recently shown that in Arabidopsis, exogenous t-CA promotes leaf growth by increasing cell expansion and that this response requires auxin signaling. We have also shown that cell expansion is increased in C4H loss-of-function mutants. Here we provide further evidence that leaf growth is enhanced by either t-CA or a t-CA derivative that accumulates upstream of C4H. We also show that this growth response pathway has two components: one that requires auxin signaling and another which employs a currently unknown mechanism
%U https://www.tandfonline.com/doi/full/10.1080/19420889.2019.1605814