Agricultural and Biological Sciences
8 years ago

Rosaceae fruit trees share common enzyme, unlocking new agricultural possibilities.

Phytochemistry
Immunological and molecular comparison of polyphenol oxidase in Rosaceae fruit trees
Miyoshi Haruta, Masatsune Murata, Hiroshi Kadokura, Seiichi Homma

Paper Summary

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A study compared polyphenol oxidase (PPO) in different fruit trees like apples, pears, peaches, quinces, and loquats. The researchers found that antibodies against apple PPO also reacted with PPOs from these other fruits. They analyzed the genes of these PPOs and discovered they were very similar, with protein sequences showing 85.3% to 97.5% identity. The PPOs had higher activity levels when tested at pH 4 compared to pH 6, indicating they work better in slightly acidic conditions. This suggests that PPOs in Rosaceae plants share similar structures and functions.