Abstract
A genomic DNA fragment of 964 bp corresponding to AP2/ERF family transcription factor was isolated from drought tolerant Oryza sativa L. cv. ‘N-22’ (AP2/ERF-‘N-22’) and Oryza sativa L. cv. ‘Teipei 309’ (AP2/ERF-jap). The cDNA sequence of AP2/ERF-‘N-22’ (732 bp) was amplified using gene specific primers. The gene contains two exons and a single intron. The deduced protein of the AP2/ERF-‘N-22’ contains a potential nuclear localization signal, a possible regulation domain and an AP2 DNA binding domain of 60 amino acids. Northern and RT-PCR analysis showed that transcript of AP2/ERF-‘N-22’ accumulates in response to WDS and the Southern analysis indicated the presence of single copy of AP2/ERF-‘N-22’ gene in Oryza sativa genome. Phylogenetic analysis of AP2/ERF family revealed that AP2/ERF-‘N-22’ belongs to group Va along with SHN clade of AP2/ERF protein which activates wax biosynthesis. A higher epicuticular wax content was observed at decreased RWC and positively correlated with AP2/ERF-‘N-22’ expression.
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Abbreviations
- AP2:
-
Apetala
- WDS:
-
Water deficit stress
- ERF:
-
Ethylene responsive factor
- DRE/CRT:
-
Drought responsive element/C-repeat element
- EREBP:
-
Ethylene responsive element binding protein
- ABA:
-
Abscisic acid
- RT-PCR:
-
Reverse transcriptase PCR
- EREB:
-
Ethylene responsive element binding protein
- AP:
-
APETALA
- ABA:
-
Abscisic acid
- DREB:
-
Drought responsive element binding protein
- RWC:
-
Relative water content
- SHN/WIN:
-
Shine/wax inducer
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Mawlong, I., Ali, K., Kurup, D. et al. Isolation and characterization of an AP2/ERF-type drought stress inducible transcription factor encoding gene from rice. J. Plant Biochem. Biotechnol. 23, 42–51 (2014). https://doi.org/10.1007/s13562-012-0185-3
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DOI: https://doi.org/10.1007/s13562-012-0185-3