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. 2018 Sep 18;9:1370. doi: 10.3389/fpls.2018.01370

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Copyright © 2018 Cruz, Bianchetti, Alves, Purgatto, Peres, Rossi and Freschi.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Light-hypersensitivity represses ethylene metabolism in ripening tomato fruits. Treatment details as described in Figure 1. (A) Ethylene emission, 1-aminocyclopropane-1-carboxylic acid (ACC) content, in vitro ACC oxidase (ACO) activity. (B) Relative mRNA levels of tomato genes encoding ACO. (C) Relative mRNA levels of tomato genes encoding ACC synthase (ACS). Mean relative expression was normalized against wild-type (WT) samples at mature green (MG) stage under dark conditions. Data are means (±SE) of at least three biological replicates. Different letters indicate statistically significant differences (Tukey’s test, p < 0.05) within each genotype. Asterisks indicate statistically significant differences (Student’s t-test, p < 0.05) between genotypes. hp2, high pigment-2; Bk, Breaker.