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Mol. Cells 2010; 30(3): 271-277

Published online September 30, 2010

https://doi.org/10.1007/s10059-010-0114-z

© The Korean Society for Molecular and Cellular Biology

Overexpression of the Ethylene-Responsive Factor Gene BrERF4 from Brassica rapa Increases Tolerance to Salt and Drought in Arabidopsis Plants

Yean Joo Seo, Jong-Beum Park, Yeon-Jeong Cho, Choonkyun Jung1, Hak Soo Seo2,3, Soon-Ki Park, Baek Hie Nahm4, and Jong Tae Song*

School of Applied Biosciences, Kyungpook National University, Daegu 702-701, Korea, 1School of Agricultural Biotechnology, Seoul National University, Seoul 151-742, Korea, 2Department of Plant Bioscience, Seoul National University, Seoul 151-742, Korea, 3Bio-MAX Institute, Seoul National University, Seoul 151-818, Korea, 4Division of Bioscience and Bioinformatics, Myongji University, Yongin 449-728, Korea

Correspondence to : *Correspondence: jtsong68@knu.ac.kr

Received: May 14, 2010; Revised: June 11, 2010; Accepted: June 14, 2010

Abstract

Ethylene-responsive factors (ERFs), within a subgroup of the AP2/ERF transcription factor family, are involved in diverse plant reactions to biotic or abiotic stresses. Here, we report that overexpression of an ERF gene from Bras-sica rapa ssp. pekinensis (BrERF4) led to improved toler-ance to salt and drought stresses in Arabidopsis. It also significantly affected the growth and development of transgenic plants. We detected that salt-induced expres-sions of a transcriptional repressor gene, AtERF4, and some Ser/Thr protein phosphatase2C genes, ABI1, ABI2 and AtPP2CA, were suppressed in BrERF4-overexpres-sing Arabidopsis plants. Furthermore, BrERF4 was in-duced by treatment with ethylene or methyljasmonate, but not by abscisic acid or NaCl in B. rapa. These results suggest that BrERF4 is activated through a network of different signaling pathways in response to salinity and drought.

Keywords Brassica rapa (B. rapa), drought stress, ethylene-responsive factor (ERF), salt stress, transcriptional regulator

Article

Research Article

Mol. Cells 2010; 30(3): 271-277

Published online September 30, 2010 https://doi.org/10.1007/s10059-010-0114-z

Copyright © The Korean Society for Molecular and Cellular Biology.

Overexpression of the Ethylene-Responsive Factor Gene BrERF4 from Brassica rapa Increases Tolerance to Salt and Drought in Arabidopsis Plants

Yean Joo Seo, Jong-Beum Park, Yeon-Jeong Cho, Choonkyun Jung1, Hak Soo Seo2,3, Soon-Ki Park, Baek Hie Nahm4, and Jong Tae Song*

School of Applied Biosciences, Kyungpook National University, Daegu 702-701, Korea, 1School of Agricultural Biotechnology, Seoul National University, Seoul 151-742, Korea, 2Department of Plant Bioscience, Seoul National University, Seoul 151-742, Korea, 3Bio-MAX Institute, Seoul National University, Seoul 151-818, Korea, 4Division of Bioscience and Bioinformatics, Myongji University, Yongin 449-728, Korea

Correspondence to:*Correspondence: jtsong68@knu.ac.kr

Received: May 14, 2010; Revised: June 11, 2010; Accepted: June 14, 2010

Abstract

Ethylene-responsive factors (ERFs), within a subgroup of the AP2/ERF transcription factor family, are involved in diverse plant reactions to biotic or abiotic stresses. Here, we report that overexpression of an ERF gene from Bras-sica rapa ssp. pekinensis (BrERF4) led to improved toler-ance to salt and drought stresses in Arabidopsis. It also significantly affected the growth and development of transgenic plants. We detected that salt-induced expres-sions of a transcriptional repressor gene, AtERF4, and some Ser/Thr protein phosphatase2C genes, ABI1, ABI2 and AtPP2CA, were suppressed in BrERF4-overexpres-sing Arabidopsis plants. Furthermore, BrERF4 was in-duced by treatment with ethylene or methyljasmonate, but not by abscisic acid or NaCl in B. rapa. These results suggest that BrERF4 is activated through a network of different signaling pathways in response to salinity and drought.

Keywords: Brassica rapa (B. rapa), drought stress, ethylene-responsive factor (ERF), salt stress, transcriptional regulator

Mol. Cells
Nov 30, 2022 Vol.45 No.11, pp. 763~867
COVER PICTURE
Naive (cyan) and axotomized (magenta) retinal ganglion cell axons in Xenopus tropicalis (Choi et al., pp. 846-854).

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