Journal
PLANT BIOTECHNOLOGY
Volume 33, Issue 4, Pages 255-+Publisher
JAPANESE SOC PLANT CELL & MOLECULAR BIOLOGY
DOI: 10.5511/plantbiotechnology.16.0215b
Keywords
flowering time regulation; NAC; secondary cell wall; transcription factor; vascular
Funding
- JSPS KAKENHI Grant [26660296]
- Grants-in-Aid for Scientific Research [26660296] Funding Source: KAKEN
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Fine-tuning of flowering timing is crucial for plants to survive and leave offspring and depends on various endogenous and environmental factors. Here we report the identification of a vascular transcription factor, ANAC075, a putative regulator of VASCULAR-RELATED NAC-DOMAIN7 (VND7), as a negative regulator of flowering in Arabidopsis. Loss of function of ANAC075 causes the upregulation of floral integrator genes and early flowering under both long-and short-day conditions. ANAC075 promoter activity was detected in vascular tissues, including phloem. Previous reports suggested that ANAC075 is a transcriptional activator involved in the secondary cell wall formation, implying that the promotion of flowering time in anac075 mutants is caused by the disruption of flowering-time gene regulation in phloem and/or vascular tissue formation.
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