Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: The grapevine guard cell-related VvMYB60 transcription factor is involved in the regulation of stomatal activity and is differentially expressed in response to ABA and osmotic stress | BMC Plant Biology The grapevine guard cell-related VvMYB60 transcription factor is involved in the regulation of stomatal activity and is differentially expressed in response to ABA and osmotic stress Galbiati et al. Galbiati et al. BMC Plant Biology 2011 11 142 http 1471-2229 11 142 21 October 2011 BioMed Central Galbiati et al. BMC Plant Biology 2011 11 142 http 1471 -2229 11 142 BMC Plant Biology RESEARCH ARTICLE Open Access The grapevine guard cell-related VvMYB60 transcription factor is involved in the regulation of stomatal activity and is differentially expressed in response to ABA and osmotic stress f 34 f 1 2 r I z- - 3 3 Massimo Galbiati 1 José Tomás Matus Priscilla Francia Fabio Rusconi Paola Canon Consuelo Medina Lucio Conti1 2 Eleonora Cominelli1 5 Chiara Tonelli1 and Patricio Arce-Johnson3 Abstract Background Under drought plants accumulate the signaling hormone abscisic acid ABA which induces the rapid closure of stomatal pores to prevent water loss. This event is trigged by a series of signals produced inside guard cells which finally reduce their turgor. Many of these events are tightly regulated at the transcriptional level including the control exerted by MYB proteins. In a previous study while identifying the grapevine R2R3 MYB family two closely related genes VvMYB30 and VvMYB60 were found with high similarity to AtMYBổỡ an Arabidopsis guard cell-related drought responsive gene. Results Promoter-GUS transcriptional fusion assays showed that expression of VvMYB60 was restricted to stomatal guard cells and was attenuated in response to ABA. Unlike VvMYB30 VvMYB60 was able to complement the loss-of-function atmyb60-1 mutant indicating that VvMYB60 is the only true ortholog of AtMYB60 in the grape genome. In addition VvMYB60 was differentially regulated during development of grape organs and in response to ABA and drought-related stress conditions. Conclusions These results show that VvMYB60 modulates
