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10.3390/ijms23042210
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Article

BnERF114.A1, a Rapeseed Gene Encoding APETALA2/ETHYLENE RESPONSE FACTOR, Regulates Plant Architecture through Auxin Accumulation in the Apex in Arabidopsis

by
Jinyang Lyu
1,†,
Yuan Guo
1,†,
Chunlei Du
1,
Haibo Yu
1,
Lijian Guo
1,
Li Liu
1,
Huixian Zhao
1,
Xinfa Wang
2,* and
Shengwu Hu
1,*
1
State Key Laboratory of Stress Biology for Arid Areas, Northwest A&F University, Xianyang 712100, China
2
Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Int. J. Mol. Sci. 2022, 23(4), 2210; https://doi.org/10.3390/ijms23042210
Submission received: 15 January 2022 / Revised: 13 February 2022 / Accepted: 15 February 2022 / Published: 17 February 2022
(This article belongs to the Special Issue Yield Traits and Their Genetic Pathway in Crop)
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Abstract

Plant architecture is crucial for rapeseed breeding. Here, we demonstrate the involvement of BnERF114.A1, a transcription factor for ETHYLENE RESPONSE FACTOR (ERF), in the regulation of plant architecture in Brassica napus. BnERF114.A1 is a member of the ERF family group X-a, encoding a putative 252-amino acid (aa) protein, which harbours the AP2/ERF domain and the conserved CMX-1 motif. BnERF114.A1 is localised to the nucleus and presents transcriptional activity, with the functional region located at 142–252 aa of the C-terminus. GUS staining revealed high BnERF114.A1 expression in leaf primordia, shoot apical meristem, leaf marginal meristem, and reproductive organs. Ectopic BnERF114.A1 expression in Arabidopsis reduced plant height, increased branch and silique number per plant, and improved seed yield per plant. Furthermore, in Arabidopsis, BnERF114.A1 overexpression inhibited indole-3-acetic acid (IAA) efflux, thus promoting auxin accumulation in the apex and arresting apical dominance. Therefore, BnERF114.A1 probably plays an important role in auxin-dependent plant architecture regulation.
Keywords: rapeseed (Brassica napus L.); BnERF114.A1; plant architecture; shoot branching; apical dominance; seed yield rapeseed (Brassica napus L.); BnERF114.A1; plant architecture; shoot branching; apical dominance; seed yield

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MDPI and ACS Style

Lyu, J.; Guo, Y.; Du, C.; Yu, H.; Guo, L.; Liu, L.; Zhao, H.; Wang, X.; Hu, S. BnERF114.A1, a Rapeseed Gene Encoding APETALA2/ETHYLENE RESPONSE FACTOR, Regulates Plant Architecture through Auxin Accumulation in the Apex in Arabidopsis. Int. J. Mol. Sci. 2022, 23, 2210. https://doi.org/10.3390/ijms23042210

AMA Style

Lyu J, Guo Y, Du C, Yu H, Guo L, Liu L, Zhao H, Wang X, Hu S. BnERF114.A1, a Rapeseed Gene Encoding APETALA2/ETHYLENE RESPONSE FACTOR, Regulates Plant Architecture through Auxin Accumulation in the Apex in Arabidopsis. International Journal of Molecular Sciences. 2022; 23(4):2210. https://doi.org/10.3390/ijms23042210

Chicago/Turabian Style

Lyu, Jinyang, Yuan Guo, Chunlei Du, Haibo Yu, Lijian Guo, Li Liu, Huixian Zhao, Xinfa Wang, and Shengwu Hu. 2022. "BnERF114.A1, a Rapeseed Gene Encoding APETALA2/ETHYLENE RESPONSE FACTOR, Regulates Plant Architecture through Auxin Accumulation in the Apex in Arabidopsis" International Journal of Molecular Sciences 23, no. 4: 2210. https://doi.org/10.3390/ijms23042210

APA Style

Lyu, J., Guo, Y., Du, C., Yu, H., Guo, L., Liu, L., Zhao, H., Wang, X., & Hu, S. (2022). BnERF114.A1, a Rapeseed Gene Encoding APETALA2/ETHYLENE RESPONSE FACTOR, Regulates Plant Architecture through Auxin Accumulation in the Apex in Arabidopsis. International Journal of Molecular Sciences, 23(4), 2210. https://doi.org/10.3390/ijms23042210

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