Details

Autor(en) / Beteiligte

• Song, Young Hun
• Kubota, Akane
• Kwon, Michael S
• Covington, Michael F
• Lee, Nayoung
• Taagen, Ella R
• Laboy Cintrón, Dianne
• Hwang, Dae Yeon
• Akiyama, Reiko
• Hodge, Sarah K
• Huang, He
• Nguyen, Nhu H
• Nusinow, Dmitri A
• Millar, Andrew J
• Shimizu, Kentaro K
• Imaizumi, Takato

Titel

Molecular basis of flowering under natural long-day conditions in Arabidopsis

Ist Teil von

• Nature plants, 2018-10, Vol.4 (10), p.824-835

Ort / Verlag

England

Erscheinungsjahr

2018

Quelle

MEDLINE

Beschreibungen/Notizen

• Plants sense light and temperature changes to regulate flowering time. Here, we show that expression of the Arabidopsis florigen gene, FLOWERING LOCUS T (FT), peaks in the morning during spring, a different pattern than we observe in the laboratory. Providing our laboratory growth conditions with a red/far-red light ratio similar to open-field conditions and daily temperature oscillation is sufficient to mimic the FT expression and flowering time in natural long days. Under the adjusted growth conditions, key light signalling components, such as phytochrome A and EARLY FLOWERING 3, play important roles in morning FT expression. These conditions stabilize CONSTANS protein, a major FT activator, in the morning, which is probably a critical mechanism for photoperiodic flowering in nature. Refining the parameters of our standard growth conditions to more precisely mimic plant responses in nature can provide a powerful method for improving our understanding of seasonal response.