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. 2016 Jan 11;6:1213. doi: 10.3389/fpls.2015.01213

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Copyright © 2016 Cao, Cui, Zhou, Ye, Zou and Deng.

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) or licensor 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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Model of the photoperiod effect on flowering in tomato. The expression of FT-like genes was regulated by photoperiod and mediated by phytochrome B1. In LD conditions, the expression of SlSP5G was induced, and the expression of SlSP5G2 and SlSP5G3 were inhibited. In SD conditions, the expression of SlSP5G was inhibited, and the expression of SlSP5G2 and SlSP5G3 were induced. The different expression pattern of tomato FT-like genes under different photoperiod may contribute tomato being a day neutral plant. Phytochrome B1 could promote the expression of SlSP5G, and inhibit the expression of SlSP5G2 and SlSP5G3.