Identification of a putative Solanum tuberosum transcriptional coactivator up-regulated in potato tubers by Fusarium solani f. sp. eumartii infection and wounding.
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 (Solanum tuberosum multiprotein 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.
Godoy
Andrea V.
AV
Instituto de Investigaciones Biológicas-Departamento de Biología, Universidad Nacional de Mar del Plata, Funes 3250, CC 1245, 7600 Mar del Plata, Argentina Instituto de Biología Molecular de Barcelona, Centro de Investigación y Desarrollo (CSIC), Jordi Girona 18-24, 08034 Barcelona, España.
Zanetti
María Eugenia
ME
San Segundo
Blanca
B
Casalongué
Claudia A.
CA