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Article

The Soybean GmNAC019 Transcription Factor Mediates Drought Tolerance in Arabidopsis in an Abscisic Acid-Dependent Manner

1
Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University–Vietnam National University HCMC, Ho Chi Minh 700000, Vietnam
2
Stress Adaptation Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan
3
Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam
*
Authors to whom correspondence should be addressed.
Int. J. Mol. Sci. 2020, 21(1), 286; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms21010286
Received: 31 August 2019 / Accepted: 27 December 2019 / Published: 31 December 2019
Being master regulators of gene expression, transcription factors (TFs) play important roles in determining plant growth, development and reproduction. To date, many TFs have been shown to positively mediate plant responses to environmental stresses. In the current study, the biological functions of a stress-responsive NAC [NAM (No Apical Meristem), ATAF1/2 (Arabidopsis Transcription Activation Factor1/2), CUC2 (Cup-shaped Cotyledon2)]-TF encoding gene isolated from soybean (GmNAC019) in relation to plant drought tolerance and abscisic acid (ABA) responses were investigated. By using a heterologous transgenic system, we revealed that transgenic Arabidopsis plants constitutively expressing the GmNAC019 gene exhibited higher survival rates in a soil-drying assay, which was associated with lower water loss rate in detached leaves, lower cellular hydrogen peroxide content and stronger antioxidant defense under water-stressed conditions. Additionally, the exogenous treatment of transgenic plants with ABA showed their hypersensitivity to this phytohormone, exhibiting lower rates of seed germination and green cotyledons. Taken together, these findings demonstrated that GmNAC019 functions as a positive regulator of ABA-mediated plant response to drought, and thus, it has potential utility for improving plant tolerance through molecular biotechnology. View Full-Text
Keywords: ABA-mediated response; drought tolerance; GmNAC019; transgenic Arabidopsis ABA-mediated response; drought tolerance; GmNAC019; transgenic Arabidopsis
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MDPI and ACS Style

Hoang, X.L.T.; Nguyen, N.C.; Nguyen, Y.-N.H.; Watanabe, Y.; Tran, L.-S.P.; Thao, N.P. The Soybean GmNAC019 Transcription Factor Mediates Drought Tolerance in Arabidopsis in an Abscisic Acid-Dependent Manner. Int. J. Mol. Sci. 2020, 21, 286. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms21010286

AMA Style

Hoang XLT, Nguyen NC, Nguyen Y-NH, Watanabe Y, Tran L-SP, Thao NP. The Soybean GmNAC019 Transcription Factor Mediates Drought Tolerance in Arabidopsis in an Abscisic Acid-Dependent Manner. International Journal of Molecular Sciences. 2020; 21(1):286. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms21010286

Chicago/Turabian Style

Hoang, Xuan L.T., Nguyen C. Nguyen, Yen-Nhi H. Nguyen, Yasuko Watanabe, Lam-Son P. Tran, and Nguyen P. Thao 2020. "The Soybean GmNAC019 Transcription Factor Mediates Drought Tolerance in Arabidopsis in an Abscisic Acid-Dependent Manner" International Journal of Molecular Sciences 21, no. 1: 286. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms21010286

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