Supplementary Materials Supplemental Data supp_160_3_1491__index. of HvLsi6 can be 900 bp very long, encoding a peptide with 300 proteins (Supplemental Fig. S1A). HvLsi6 exhibited 88.2% identity with grain Lsi6 in the amino acid level (Supplemental Fig. S1B). Similar to other Si-permeable channels, HvLsi6 is characterized by two Asn-Pro-Ala motifs and a distinct aromatic/Arg selectivity filter, Gly, Ser, Gly, and Arg (Supplemental Fig. S1A). Si Transport Activity of HvLsi6 FGD4 in Oocytes To examine the transport activity of HvLsi6 MK-4305 cell signaling for silicic acid, HvLsi6 was expressed in oocytes and the uptake of silicic acid labeled with 68Ge was determined (Mitani et al., 2008). Compared with the control injected with water, oocytes injected with complementary RNA (cRNA) showed a significantly higher uptake activity for Si (Fig. 1). This result indicates that, like OsLsi6, HvLsi6 is also permeable to silicic acid. Open in a separate window Figure 1. Transport activity MK-4305 cell signaling for Si in oocytes. cRNA of or water as a negative control was injected into oocytes. The oocytes were subjected to 1 mm silicic acidity tagged with 68Ge. After 30 min of incubation, radioactivity in the oocytes was established. Data are means sd of three natural replicates. Expression Design of at Different Development Stages The manifestation design of was looked into in various organs at different development phases using semiquantitative and quantitative invert transcription (RT)-PCR. In the vegetative development stage, as opposed to was indicated in both origins and shoots (Fig. 2A). Spatial manifestation analysis demonstrated that was indicated in both root ideas (0C15 mm) as well as the mature area (15C30 mm; Fig. 2B), with an increased manifestation level in the main tips. In comparison, a higher manifestation of was seen in the adult area of the origins (Fig. 2B; Chiba et al., 2009). Furthermore, the manifestation of in the origins was not impacted by way to obtain Si up to 7 d (Fig. 2C). Open up in another window Shape 2. Manifestation patterns of in various organs at different development stages. A, Manifestation of in various organs. B, Spatial manifestation of in the origins. C, Aftereffect of Si for the manifestation of in the origins. D to F, Manifestation of (D), (E), and (F) in various organs at flowering stage. Manifestation was dependant on quantitative RT-PCR. Manifestation relative to underlying is demonstrated. Data in C to F are means sd of three natural replicates. Actin or was utilized as an interior standard. In the reproductive development stage, was indicated in the awn, peduncle, and nodes as well as the origins, leaf sheath, and cutting blades (Fig. 2D). Oddly enough, the highest manifestation was within node I. The manifestation of and was also analyzed at the reproductive growth stage. was almost only expressed in the root (Fig. 2E), while was also detected MK-4305 cell signaling in the nodes in addition to the roots (Fig. 2F). Intracellular and Cellular Localizations of HvLsi6 To investigate tissue and cellular localization, immunostaining using an antibody against HvLsi6 was performed in different plant organs. In the root tip, Lsi6 was localized in cell layers between the epidermis and endodermis (Fig. 3A). Higher intensity was observed at the distal side of each cell (Fig. 3B). In the mature root region, the signal was too weak to be detected (Fig. 3C), MK-4305 cell signaling consistent with the expression level (Fig. 2B). Open in a separate window Figure 3. Localization of HvLsi6 in roots and leaves. Immunostaining with anti-HvLsi6 antibody (ACG) or preimmune serum (HCJ) is shown in the root tip (10 mm from the tip; A, B, and H), root mature region (C), leaf sheath (D, E, and I) and leaf blade (F, G, and J) of barley Haruna-Nijo. B, E, and G show magnified images of.