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    Regulatory interplay between LEAFY, APETALA1/CAULIFLOWER and TERMINAL FLOWER1: New insights into an old relationship


    Serrano-Mislata, Antonio and Goslin, Kevin and Zheng, Beibei and Raeb, Liina and Wellmer, Frank and Graciet, Emmanuelle and Madueno, Francisco (2017) Regulatory interplay between LEAFY, APETALA1/CAULIFLOWER and TERMINAL FLOWER1: New insights into an old relationship. Plant Signaling and Behavior, 12 (10). e1370164. ISSN 1559-2324

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    Abstract

    The gene regulatory network comprised of LEAFY (LFY), APETALA1 (AP1), the AP1 paralog CAULIFLOWER (CAL), and TERMINAL FLOWER1 (TFL1) is a major determinant of the flowering process in Arabidopsis thaliana. TFL1 activity in the shoot apical meristem provides inflorescence identity while the transcription factors LFY and AP1/CAL confer floral identity to emerging floral primordia. It has been thought that LFY and AP1/CAL control the onset of flowering in part by repressing TFL1 expression in flowers. However, in the June issue of Plant Physiology, we reported that LFY and AP1 act antagonistically in the regulation of several key flowering regulators, including TFL1. Specifically, TFL1 transcription was suppressed by AP1 but promoted by LFY. Here, we present additional evidence for the role of LFY as an activator of TFL1 and propose that this regulatory activity is pivotal for the indeterminate growth of the SAM during the reproductive phase of development.

    Item Type: Article
    Additional Information: Cite as: Antonio Serrano-Mislata, Kevin Goslin, Beibei Zheng, Liina Rae, Frank Wellmer, Emmanuelle Graciet & Francisco Madueño (2017) Regulatory interplay between LEAFY, APETALA1/CAULIFLOWER and TERMINAL FLOWER1: New insights into an old relationship, Plant Signaling & Behavior, 12:10, DOI: 10.1080/15592324.2017.1370164
    Keywords: APETALA1; Arabidopsis; CAULIFLOWER; flowering; inflorescence development; LEAFY; meristem identity; TERMINAL FLOWER1;
    Academic Unit: Faculty of Science and Engineering > Biology
    Item ID: 11025
    Identification Number: https://doi.org/10.1080/15592324.2017.1370164
    Depositing User: Emmanuelle Graciet
    Date Deposited: 06 Sep 2019 15:13
    Journal or Publication Title: Plant Signaling and Behavior
    Publisher: Taylor & Francis
    Refereed: Yes
    Funders: Horizon 2020 Research and Innovation program, Science Foundation Ireland (SFI), MINECO, FEDER, Irish Research Council (IRC)
    URI:

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