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Fig. 4 | BMC Plant Biology

Fig. 4

From: A chloroplast-targeted pentatricopeptide repeat protein PPR287 is crucial for chloroplast function and Arabidopsis development

Fig. 4

PPR287 is crucial for photosynthesis and chloroplast biogenesis. a Pale-green phenotypes of the ppr287 mutant and amiRNA knockdown mutant (KD1) observed at 20 days after germination (DAG). Bar = 1 cm. b Chlorophyll fluorescence (Fv/Fm) and (c) chlorophyll contents in each plant at 10 DAG. Data are mean ± SD of three biological replicates (n = 5), and statistically different values are indicated by asterisks (p ≤ 0.05). d Chloroplast structures in the leaves of 3-week-old plants were observed using a transmission electron microscope. Bar = 1 μm. e In situ detection of H2O2 levels in the leaves of each plant were performed by DAB (3,3′-diaminobenzidine) staining. Bar = 5 mm. The levels of H2O2 were quantified, and data are mean ± SD of three biological replicates (n = 5). FW, fresh weight

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