Abstract

In the Review article ‘Uptake, allocation and signaling of nitrate’ by Ya-Yun Wang, Po-Kai Hsu, and Yi-Fang Tsay, which was published in the August 2012 issue of Trends in Plant Science, the direction of nitrate transport mediated by CLCa,b in Figure 2Figure 2 was incorrectly shown as out of the vacuole rather than into the vacuole, whereas the transport direction of CLCa, b shown in Figure 1 is correct. This change in Figure 2Figure 2 does not affect the conclusions mentioned in the paper. Below is the corrected version of Figure 2Figure 2Figure 2Directions of nitrate movement mediated by nitrate transporter 1 (NRT1), NRT2, chloride channel (CLC) a,b, and slow anion channel-associated 1 homolog 3 (SLAH3) in plasma membrane or tonoplast. Most NRT1 and NRT2 transporters characterized are H+-coupled symporters. NRT1.1 (CHL1), a dual-affinity nitrate transporter, is phosphorylated by calcineurin B-like-interacting protein kinase 23 (CIPK23) to change the affinity. NAR2 is required for NRT2 nitrate transport. CLCa,b localized in the tonoplast are H+/NO3− antiporters. Anion channel SLAH3 mediates nitrate release from guard cells and its function is regulated by CPK21. Abbreviations: CPK21, calcium-dependant protein kinase 21; NAXT1, nitrate excretion transporter 1.View Large Image | Download PowerPoint Slide

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