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. 2021 Oct 6;12:743993. doi: 10.3389/fpls.2021.743993

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Copyright © 2021 Rey, Zacarias and Rodrigo.

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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Relative expression of genes of the tocopherol-core pathway in the flavedo during fruit maturation of grapefruit (C. paradisi), lemon (C. limon), sweet orange (C. sinensis), and mandarin (C. clementine). The genes analyzed were VTE2 (HPT, homogentisate phytyl transferase), VTE3a and VTE3b (MPBQ-MT, 2-methyl-6-phytyl-1,4-benzoquinol methyltransferase a and b), VTE1 (TC, tocopherol cyclase), and VTE4 (γ-TMT, γ-tocopherol methyltransferase). Maturation stages correspond to immature green (IG), mature green (MG), breaker (Br), and mature (M). The data are mean ± SE of at least three replicates (Supplementary Table 11). Different letters indicate significant mean differences among maturation stages for each fruit specie (Tukey’s test, p ≤ 0.05).