2017
DOI: 10.1104/pp.16.01738
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EARLY FLOWERING3 Redundancy Fine-Tunes Photoperiod Sensitivity

Abstract: Three pea (Pisum sativum) loci controlling photoperiod sensitivity, HIGH RESPONSE (HR), DIE NEUTRALIS (DNE), and STERILE NODES (SN), have recently been shown to correspond to orthologs of Arabidopsis (Arabidopsis thaliana) circadian clock genes EARLY FLOWERING3 (ELF3), ELF4, and LUX ARRHYTHMO, respectively. A fourth pea locus, PHOTOPERIOD (PPD), also contributes to the photoperiod response in a similar manner to SN and DNE, and recessive ppd mutants on a springflowering hr mutant background show early, photope… Show more

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Cited by 31 publications
(16 citation statements)
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“…Under this scenario, CaELF3b may be capable of partially fulfilling the role of CaELF3a, enabling the persistent rhythmic expression of clock genes under LL, while loss of the first copy could confer earlier flowering through either lower dosage effects or other unknown mechanisms. This view is consistent with a recent study by Rubenach et al (2017) that showed that the pea ELF3b homolog PHOTOPERIOD partially compensates for the ELF3a homolog HR. A scenario involving ELF3 redundancy also is consistent with results in Figure 7 that indicate that, while the 11-bp deletion in CaELF3a is associated with early flowering under SD, it is not essential for conferring photoperiod sensitivity per se, raising the possibility that CaELF3b may be partially compensating.…”
Section: Discussionsupporting
confidence: 93%
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“…Under this scenario, CaELF3b may be capable of partially fulfilling the role of CaELF3a, enabling the persistent rhythmic expression of clock genes under LL, while loss of the first copy could confer earlier flowering through either lower dosage effects or other unknown mechanisms. This view is consistent with a recent study by Rubenach et al (2017) that showed that the pea ELF3b homolog PHOTOPERIOD partially compensates for the ELF3a homolog HR. A scenario involving ELF3 redundancy also is consistent with results in Figure 7 that indicate that, while the 11-bp deletion in CaELF3a is associated with early flowering under SD, it is not essential for conferring photoperiod sensitivity per se, raising the possibility that CaELF3b may be partially compensating.…”
Section: Discussionsupporting
confidence: 93%
“…carry two copies of ELF3, forming two separate clades that we designated ELF3a and ELF3b (Fig. 3D), consistent with Rubenach et al (2017). Common bean (Phaseolus vulgaris) databases lacked a representative in the ELF3a clade, while the tetraploid soybean (Glycine max) had only one copy in the ELF3a clade instead of the expected two.…”
Section: Qtl Analysis Reveals a Major Flowering Time Locus On Ca5supporting
confidence: 71%
“…In an attempt to locate LATE3 and LATE4 within this model, we examined the genetic interaction of late3 and late4 with two early-flowering mutants, namely sn and lf. SN has primary role as a component of the circadian clock evening complex, which acts to repress flowering and FT expression (Liew et al, 2014;Rubenach et al, 2017). LF is one of three pea TFL1 co-orthologs (Foucher et al, 2003), and appears to act downstream of the FT gene FTa1 to repress expression of inflorescence identity genes (Hecht et al, 2011;Sussmilch et al, 2015).…”
Section: Genetic Interactions Between Late3 and Late4 And Other Flowementioning
confidence: 99%
“…Figure 5B shows that in the presence of late4, the sn mutation was unable to promote flowering, and sn late4 plants in fact initiated flowering even later than late4 single-mutant controls. This suggests that LATE4 acts downstream of the changes to FT expression that are assumed to be the primary cause of the sn early-flowering phenotype (Liew et al, 2014;Rubenach et al, 2017).…”
Section: Genetic Interactions Between Late3 and Late4 And Other Flowementioning
confidence: 99%
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