Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 72, Issue 7, Pages 2301-2311Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/eraa598
Keywords
Florigen; FLOWERING LOCUS T (FT); genomics and gene regulation; hormone signaling; photoperiod; plant architecture; seasonal response; sugar signaling; TERMINAL FLOWER 1 (TFL1); TFL1/FT competition
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Funding
- National Science Foundation (NSF), Division of Integrative Organismal Systems (IOS) [1557529, 1905062]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1557529] Funding Source: National Science Foundation
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1905062] Funding Source: National Science Foundation
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The experiments by Garner and Allard marking their 100th anniversary this year demonstrated that plants measure the photoperiod to determine flowering timing. This led to the identification of FT in Arabidopsis and Hd3a in rice as mobile signals promoting flowering. PEBPs, to which FT/Hd3a belong, play a crucial role in controlling plant developmental transitions and architecture.
This year marks the 100th anniversary of the experiments by Garner and Allard that showed that plants measure the duration of the night and day (the photoperiod) to time flowering. This discovery led to the identification of Flowering Locus T (FT) in Arabidopsis and Heading Date 3a (Hd3a) in rice as a mobile signal that promotes flowering in tissues distal to the site of cue perception. FT/Hd3a belong to the family of phosphatidylethanolamine-binding proteins (PEBPs). Collectively, these proteins control plant developmental transitions and plant architecture. Several excellent recent reviews have focused on the roles of PEBPs in diverse plant species; here we will primarily highlight recent advances that enhance our understanding of the mechanism of action of PEBPs and discuss critical open questions.
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