Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: The HaDREB2 transcription factor enhances basal thermotolerance and longevity of seeds through functional interaction with HaHSFA9 | BMC Plant Biology BioMed Central Research article The HaDREB2 transcription factor enhances basal thermotolerance and longevity of seeds through functional interaction with HaHSFA9 Concepcion Almogueraf Pilar Prieto-Dapenat Juan Díaz-Martín José M Espinosa Raúl Carranco and Juan Jordano Open Access Address Institute de Recursos Naturales y Agrobiología de Sevilla Consejo Superior de Investigaciones Cientificas Apartado 1052 41080 Seville Spain Email Concepcion Almoguera - antolin@ Pilar Prieto-Dapena - ppdapena@ Juan Diaz- Martin - José M Espinosa - jmespvaz@ Raúl Carranco - raulca@ Juan Jordano - fraga@ Corresponding author tEqual contributors Published 19 June 2009 Received 6 February 2009 BMC Plant Biology 2009 9 75 doi l47l-2229-9-75 Accepted I9 June 2009 This article is available from http l47l-2229 9 75 2009 Almoguera et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Transcription factor HaDREB2 was identified in sunflower Helianthus annuus L. as a drought-responsive element-binding factor 2 DREB2 with unique properties. HaDREB2 and the sunflower Heat Shock Factor A9 HaHSFA9 co-activated the promoter in sunflower embryos. Both factors could be involved in transcriptional co-activation of additional small heat stress protein sHSP promoters and thus contribute to the HaHSFA9-mediated enhancement of longevity and basal thermotolerance of seeds. Results We found that overexpression of HaDREB2 in seeds did not enhance longevity. This was deduced from assays of basal thermotolerance and controlled seed-deterioration which were performed with transgenic tobacco. Furthermore the .
