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WRKY71 accelerates flowering via the direct activation of FLOWERING LOCUS T and LEAFY in Arabidopsis thaliana

Cited 50 time in Web of Science Cited 57 time in Scopus
Authors
Yu, Yanchong; Liu, Zhenhua; Wang, Long; Kim, Sang-Gyu; Seo, Pil J.; Qiao, Meng; Wang, Nan; Li, Shuo; Cao, Xiaofeng; Park, Chung-Mo; Xiang, Fengning
Issue Date
2016-01
Citation
Plant Journal, Vol.85 No.1, pp.96-106
Keywords
WRKY71transcription factorfloweringFLOWERING LOCUS TLEAFYArabidopsis thaliana
Abstract
Flowering is crucial for achieving reproductive success. A large number of well-delineated factors affecting flowering are involved in complex genetic networks in Arabidopsis thaliana. However, the underlying part played by the WRKY transcription factors in this process is not yet clear. Here, we report that WRKY71 is able to accelerate flowering in Arabidopsis. An activation-tagged mutant WRKY71-1D and a constitutive over-expresser of WRKY71 both flowered earlier than the wild type (WT). In contrast, both the RNA interference-based multiple WRKY knock-out mutant (w71w8 + 28RNAi) and the dominant repression line (W71-SRDX) flowered later. Gene expression analysis showed that the transcript abundance of the flowering time integrator gene FLOWERING LOCUS T (FT) and the floral meristem identity genes LEAFY (LFY), APETALA1 (AP1) and FRUITFULL (FUL) were greater in WRKY71-1D than in the WT, but lower in w71w8 + 28RNAi and W71-SRDX. Further, WRKY71 was shown to bind to the W-boxes in the FT and LFY promoters in vitro and in vivo. The suggestion is that WRKY71 activity hastens flowering via the direct activation of FT and LFY.
ISSN
0960-7412
URI
https://hdl.handle.net/10371/172039
DOI
https://doi.org/10.1111/tpj.13092
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College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
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