Fig. 5

Statistical analysis of acidic pI proteins in chloroplast proteomes. A Principal component analysis (PCoA) of acidic pI proteins from the chloroplast proteomes of different taxonomic groups of plants. The analysis indicated that monocots, eudicots, algae, and pteridophytes locate independently from each other, suggesting a lack of commonality between them. Pearson’s (p < 0.05) correlation analysis values of acidic pI proteins in the chloroplast proteome of different taxonomic groups of plants. C Heat map of the correlation values between other basic pI proteins. The analysis indicated that acidic pI proteins are negatively correlated with different taxonomic groups of the plants