Characteristics of TaMRRP in wheat. (A) Structure of TaMRRP. Pentatricopeptide repeat domains (PPR motifs) are indicated according to the amino acid sequence. (B) Subcellular localization of TaMRRP in tobacco cells. The vector control (35S::GFP) and fusion proteins (35S::TaMRRP::GFP) were introduced into tobacco leaf cells and fluorescence was observed with a laser scanning confocal microscope. Images are in dark field (1, 4), bright field (2, 5), and combined (3, 6). Scale bar, 50 μm. (C) Expression patterns of TaMRRP in different wheat tissues at different developmental stages. R, roots; S, leaf sheaths; L, leaf blades; I, internodes; N, nodes; E, ears; P, plumules; RB, root bases. (D) Expression patterns of TaMRRP during germination and seedling development after seed germination. Tubulin was used as the internal control. Error bars represent the SD of triplicate reactions. The experiment was repeated three times with similar results. This figure is available in colour at JXB online.