Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Isolation of Multi-Abiotic Stress Response Genes to Generate Global Warming Defense Forage Crops

  • Ermawati, Netty (Department of Agricultural Production and Central Laboratory for Biosciences, State Polytechnic of Jember) ;
  • Hong, Jong Chan (Division of Life Science, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University) ;
  • Son, Daeyoung (Department of Plant Medicine, Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Cha, Joon-Yung (Research Institute of Life Sciences, Gyeongsang National University)
  • Received : 2021.11.07
  • Accepted : 2021.11.23
  • Published : 2021.12.31
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Abstract

Forage crop management is severely challenged by global warming-induced climate changes representing diverse a/biotic stresses. Thus, screening of valuable genetic resources would be applied to develop stress-tolerant forage crops. We isolated two NAC (NAM, ATAF1, ATAF2, CUC2) transcription factors (ANAC032 and ANAC083) transcriptionally activated by multi-abiotic stresses (salt, drought, and cold stresses) from Arabidopsis by microarray analysis. The NAC family is one of the most prominent transcription factor families in plants and functions in various biological processes. The enhanced expressions of two ANACs by multi-abiotic stresses were validated by quantitative RT-PCR analysis. We also confirmed that both ANACs were localized in the nucleus, suggesting that ANAC032 and ANAC083 act as transcription factors to regulate the expression of downstream target genes. Promoter activities of ANAC032 and ANAC083 through histochemical GUS staining again suggested that various abiotic stresses strongly drive both ANACs expressions. Our data suggest that ANAC032 and ANAC083 would be valuable genetic candidates for breeding multi-abiotic stress-tolerant forage crops via the genetic modification of a single gene.

Keywords

Acknowledgement

This research was funded by a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT 2019R1A2C1011173).

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