Identification of novel ERF transcription factor genes in papaya and analysis of their expression in different tissues and in response to the plant defense inducer benzothiadiazole (BTH)
2015
Vallejo-Reyna, Miguel A. | Santamaría, Jorge M. | Rodríguez-Zapata, Luis C. | Herrera-Valencia, Virginia A. | Peraza-Echeverria, Santy
In the present study, we isolated and characterized four novel papaya ERF transcription factor cDNAs (CpERF5–CpERF8) with homology to ERF genes involved in disease resistance, and analyzed their expression in different tissues and in response to the plant defense inducer benzothiadiazole (BTH). Interestingly, CpERF7 was the most responsive to BTH. Further examination revealed that it was also up-regulated by the bacterial pathogen Pseudomonas syringae and encoded a nuclear protein with transcription factor activity. These novel insights on CpERF7 have provided a valuable platform to continue dissecting the BTH signal transduction pathway that may lead to engineering disease resistance in papaya.
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