Definition of photorespiration in English:


Pronunciation /ˌfōdōrespəˈrāSH(ə)n/ /ˌfoʊdoʊrɛspəˈreɪʃ(ə)n/


  • A respiratory process in many higher plants by which they take up oxygen in the light and give out some carbon dioxide, contrary to the general pattern of photosynthesis.

    • ‘Oxygen can also be reduced in the processes of photorespiration.’
    • ‘It was suggested above that one proton was released in the chloroplast stroma for every three oxygen molecules fixed during photorespiration.’
    • ‘It is therefore likely that photorespiration of herbaceous leaves is driven by a large carbon pool.’
    • ‘Plants also produce significant amounts of ammonium endogenously from processes such as photorespiration, phenylpropanoid biosynthesis, and amino acid catabolism.’
    • ‘Chloroplasts and mitochondria communicate through metabolites, exemplified by photorespiration and energy metabolism.’



/ˌfōdōrespəˈrāSH(ə)n/ /ˌfoʊdoʊrɛspəˈreɪʃ(ə)n/