Arabidopsis TN protein AtTN10 interacts with 3PGDH in the cytoplasm. A, AtTN10 transiently cooverexpressed with 3PGDH in tobacco leaves results in cytoplasmic localization. B, AtTN10 induces strong stromule formation, as observed by the NRIP1 in chloroplasts when AtTN10 is transiently overexpressed in NRIP1 transgenic background. C, p50 protein of TMV induces strong stromule formation in NRIP1 background. D, Negative control showing YFP protein alone transiently overexpressed in NRIP1. Stromule induction is shown by white arrows. Bars = 20 µm.