, Volume 228, Issue 2, pp 225–240 | Cite as

Soybean GmbZIP44, GmbZIP62 and GmbZIP78 genes function as negative regulator of ABA signaling and confer salt and freezing tolerance in transgenic Arabidopsis

  • Yong Liao
  • Hong-Feng Zou
  • Wei Wei
  • Yu-Jun Hao
  • Ai-Guo Tian
  • Jian Huang
  • Yun-Feng Liu
  • Jin-Song ZhangEmail author
  • Shou-Yi ChenEmail author
Original Article


From soybean plant, 131 bZIP genes were identified and named as GmbZIPs. The GmbZIPs can be classified into ten groups and more than one third of these GmbZIPs are responsive to at least one of the four treatments including ABA, salt, drought and cold stresses. Previous studies have shown that group A bZIP proteins are involved in ABA and stress signaling. We now chose four non-group A genes to study their features. The four proteins GmbZIP44, GmbZIP46, GmbZIP62 and GmbZIP78 belong to the group S, I, C and G, respectively, and can bind to GLM (GTGAGTCAT), ABRE (CCACGTGG) and PB-like (TGAAAA) elements with differential affinity in both the yeast one-hybrid assay and in vitro gel-shift analysis. GmbZIP46 can form homodimer or heterodimer with GmbZIP62 or GmMYB76. Transgenic Arabidopsis plants overexpressing the GmbZIP44, GmbZIP62 or GmbZIP78 showed reduced ABA sensitivity. However, all the transgenic plants were more tolerant to salt and freezing stresses when compared with the Col plants. The GmbZIP44, GmbZIP62 and GmbZIP78 may function in ABA signaling through upregulation of ABI1 and ABI2 and play roles in stress tolerance through regulation of various stress-responsive genes. These results indicate that GmbZIP44, GmbZIP62 and GmbZIP78 are negative regulators of ABA signaling and function in salt and freezing tolerance.


Abiotic stress bZIP-transcription factor Soybean Stress tolerance Transgenic plants 



Glycine max basic/leucine zipper protein


Binding domain



This work was supported by the National Basic Research Program of China (2004CB117200, 2006CB100102, 2002CB111303), the National Natural Science Foundation of China (30490254) and the National Hightech Program (2006AA10A111, 2006AA10Z113).

Supplementary material

425_2008_731_MOESM1_ESM.doc (437 kb)
Supplementary Table 1 Accession numbers and expressions of 131 soybean GmbZIP genes in response to ABA and abiotic stresses. (DOC 437 kb)


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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Yong Liao
    • 1
  • Hong-Feng Zou
    • 1
  • Wei Wei
    • 1
  • Yu-Jun Hao
    • 1
  • Ai-Guo Tian
    • 1
  • Jian Huang
    • 1
  • Yun-Feng Liu
    • 1
  • Jin-Song Zhang
    • 1
    Email author
  • Shou-Yi Chen
    • 1
    Email author
  1. 1.Plant Gene Research Center, National Key Laboratory of Plant GenomicsInstitute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijingChina

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