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Fruit Quality Biology Research Team revealed the role of CitERF13 in regulating citric acid accumulation in citrus

Date:2016-04-07

        Organic acids are essential to fruit flavor. The vacuolar H+ transporting adenosine triphosphatase (V-ATPase) plays an important role in organic acid transport and accumulation. However, less is known of V-ATPase interacting proteins and their relationship with fruit organic acid accumulation. Recently, Ph.D. student Shaojia Li and Dr Xueren Yin from Prof. Chen’s lab in the Fruit Science Institute demonstrated that an AP2/ERF gene, CitERF13, interact at the protein level with CitVHA-c4 using yeast two-hybrid system and bimolecular fluorescence complementation assays. A synergistic effect on citric acid levels was observed between V-ATPase proteins and interacting ERFs when analyzed using transient over-expression in tobacco and Arabidopsis mutants. This study indicated that CitERF13 may regulate citric acid accumulation via a protein-protein interaction with CitVHA-c4.
        This paper entitled ‘The Citrus transcription factor, CitERF13, regulates citric acid accumulation via a protein-protein interaction with the vacuolar proton pump, CitVHA-c4’ was published online in Scientific Reports(http://www.nature.com/
articles/srep20151). This research was supported by the National Basic Research Program of China (2011CB100602), and Program of International Science and Technology Cooperation (2011DFB31580), the National High Technology Research and Development Program of China (2012AA101702).
 



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