Faculty of Biology, University of Latvia
Hard copy: ISSN 1691–8088
On-line: ISSN 2255–9582
Environ Exp Biol (2019) 17: 201–208
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Environmental and

Environ Exp Biol (2019) 17: 201–208

Orginal Paper

Genome-wide analysis and expression profile of bZIPs transcription factor gene family in Ethiopian lowland bamboo (Oxytenanthera abyssinica) in response to osmotic and salt stress

Muhamed Adem1*, Kai Zhao2, Dereje Beyene3, Tileye Feyissa4, Jiang Tingbo2
1 Department of Forestry, College of Agriculture and Natural Resources, Madawalabu University, P.O. Box 247 Bale Robe, Oromia, Ethiopia
2 State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
3 Department of Microbial, Cellular, and Molecular Biology, College of Natural and Computational Sciences, Addis Ababa University, P.O. Box 1176 Addis Ababa, Ethiopia
4 Institute of Biotechnology, College of Natural and Computational Sciences, Addis Ababa University, P.O. Box 1176 Addis Ababa, Ethiopia
* Corresponding author, E-mail: muhamed.adem@aau.edu.et


The basic leucine-region zipper (bZIP) transcription factors (TFs) are one of the largest TFs with significant roles in plant biological and developmental processes, and stress tolerance. Despite the important role of bZIPs in plants, genome-wide analysis and expression profiling under abiotic stress remain elusive in Oxytenanthera abyssinica. In this study, a total of 162 bZIP O. abyssinica TFs having the bZIP DNA binding domain (PF00170) were identified through genome-wide analysis. For the identified bZIPs, functional annotation, phylogenetic relationship and expression under osmotic and salt stress were investigated. The expression profile of the bZIP TFs revealed that the majority were highly responsive to osmotic and salt stress, as 99 of the 162 bZIP TFs were up-regulated. Metabolic pathway analysis revealed that environmental information processing and genetic information processing categories were the only represented pathways that revealed close association of bZIPs TFs with stress response. The study provided valuable information about the expression profile of bZIPs TFs associated with osmotic and salt stress, which could be used as a basis for further studies.

Key words: abiotic stress, bZIP transcription factors, Oxytenanthera abyssinica, RNA-Seq.

Environ Exp Biol (2019) 17: 201–208
 DOI: http://doi.org/10.22364/eeb.17.21

Prof. Gederts Ievinsh
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