The present invention provides a stress responsive promoter. The environmental stress responsive promoter of the present invention comprises DNA of the following (a), (b) or (c): (a) DNA consisting of any nucleotide sequence selected from SEQ ID NOS: 1 to 18; (b) DNA consisting of a nucleotide sequence comprising a deletion, substitution or addition of one or more nucleotides relative to any nucleotide sequence selected from SEQ ID NOS: 1 to 18, and functioning as an environmental stress responsive promoter; and (c) DNA hybridizing under stringent conditions to DNA consisting of any nucleotide sequence selected from SEQ ID NOS: 1 to 18, and functioning as an environmental stress responsive promoter.

 
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> Manufacture of cellulose esters: recycle of caustic and/or acid from pre-treatment of pulp

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