Identification of a putative Solanum tuberosum transcriptional coactivator up-regulated in potato tubers by Fusarium solani f. sp. eumartii infection and wounding

• Published in: Physiologia plantarum Vol. 112; no. 2; pp. 217 - 222
• Main Authors: Godoy, Andrea V., Zanetti, María Eugenia, San Segundo, Blanca, Casalongué, Claudia A.
• Format: Journal Article
• Language: English
• Published: Copenhagen Munksgaard International Publishers 01.06.2001; Blackwell
• Subjects: Biological and medical sciences; Fundamental and applied biological sciences. Psychology; Generalities. Disease free stocks; Molecular and cellular biology; Molecular genetics; Phytopathology. Animal pests. Plant and forest protection; Transcription. Transcription factor. Splicing. Rna processing; Salicylic acid; Plant pathogen; Solanum tuberosum; Injury; Ethylene; Coactivator; Identification; Gene expression; Fungi; Characterization; Infection; Regulation(control); Dicotyledones; Angiospermae; Tuber; Defense mechanism; Spermatophyta; Fungi Imperfecti; Tuber plant; Solanaceae; Transcription factor; Aminoacid sequence; Thallophyta
• ISSN: 0031-9317; 1399-3054
• DOI: 10.1034/j.1399-3054.2001.1120210.x

Coadaptors or coactivators are a new class of transcription factors capable of interconnecting a regulator DNA‐binding protein with a component of the basal transcription machinery allowing transcriptional activation to proceed. We report the identification of a novel Solanum tuberosum ssp. tuberosum putative transcription coactivator, named StMBF1 (Solanumtuberosummultiprotein bridging factor 1). The StMBF1 cDNA was isolated from a Fusarium solani f. sp. eumartii‐infected potato tuber cDNA library, using a differential screening approach. StMBF1 is up‐regulated during fungal attack as well as on wounding. A Fusarium elicitor source and ethylene precursor and salicylic acid also regulate StMBF1 expression. The precise role of StMBF1 during the plant response against environmental stresses remains to be elucidated.