scholarly journals Autonomous Pathway: FLOWERING LOCUS C Repression through an Antisense-Mediated Chromatin-Silencing Mechanism

2019 ◽  
Vol 182 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Zhe Wu ◽  
Xiaofeng Fang ◽  
Danling Zhu ◽  
Caroline Dean
Keyword(s):  
Flowering Locus C ◽  
Autonomous Pathway ◽  
Flowering Locus

scholarly journals Dehydroabietinal promotes flowering time and plant defense in Arabidopsis via the autonomous pathway genes FLOWERING LOCUS D, FVE, and RELATIVE OF EARLY FLOWERING 6

2020 ◽  
Vol 71 (16) ◽  
pp. 4903-4913 ◽  
Author(s):  
Zulkarnain Chowdhury ◽  
Devasantosh Mohanty ◽  
Mrunmay K Giri ◽  
Barney J Venables ◽  
Ratnesh Chaturvedi ◽  
...  
Keyword(s):  
Flowering Time ◽  
Systemic Acquired Resistance ◽  
Defense Mechanism ◽  
Acquired Resistance ◽  
Early Flowering ◽  
Negative Regulator ◽  
Flowering Locus T ◽  
Autonomous Pathway ◽  
Abietane Diterpenoids ◽  
Flowering Locus

Abstract Abietane diterpenoids are tricyclic diterpenes whose biological functions in angiosperms are largely unknown. Here, we show that dehydroabietinal (DA) fosters transition from the vegetative phase to reproductive development in Arabidopsis thaliana by promoting flowering time. DA’s promotion of flowering time was mediated through up-regulation of the autonomous pathway genes FLOWERING LOCUS D (FLD), RELATIVE OF EARLY FLOWERING 6 (REF6), and FVE, which repress expression of FLOWERING LOCUS C (FLC), a negative regulator of the key floral integrator FLOWERING LOCUS T (FT). Our results further indicate that FLD, REF6, and FVE are also required for systemic acquired resistance (SAR), an inducible defense mechanism that is also activated by DA. However, unlike flowering time, FT was not required for DA-induced SAR. Conversely, salicylic acid, which is essential for the manifestation of SAR, was not required for the DA-promoted flowering time. Thus, although the autonomous pathway genes FLD, REF6, and FVE are involved in SAR and flowering time, these biological processes are not interdependent. We suggest that SAR and flowering time signaling pathways bifurcate at a step downstream of FLD, REF6, and FVE, with an FLC-dependent arm controlling flowering time, and an FLC-independent pathway controlling SAR.

scholarly journals Histone H2B Monoubiquitination in the Chromatin of FLOWERING LOCUS C Regulates Flowering Time in Arabidopsis

2008 ◽  
Vol 20 (10) ◽  
pp. 2586-2602 ◽  
Author(s):  
Ying Cao ◽  
Yan Dai ◽  
Sujuan Cui ◽  
Ligeng Ma
Keyword(s):  
Flowering Time ◽  
Histone H2b ◽  
Flowering Locus C ◽  
Flowering Locus
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