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Cell‐wall lysing enzymes and products of cell‐wall digestion elicit ethylene in citrus
Author(s) -
Baldwin Elizabeth A.,
Biggs R. Hilton
Publication year - 1988
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1988.tb09193.x
Subject(s) - ethylene , citrus × sinensis , enzyme , cycloheximide , chemistry , pectin , cell wall , pectinase , orange (colour) , biochemistry , hydrolysis , lysis , food science , protein biosynthesis , catalysis
Ethylene production was induced in Valencia oranges [ Citrus sinensis (L.) Osbcck] by injection of the fungal enzyme mixture Pectolyase ( Aspergillus japonicus ) which contains pectolytic enzymes into the peel. The mixture also stimulated production of 1‐aminocyclopropane‐1‐carboxylic acid (ACC). Cycloheximide partially inhibited the Pectolyase‐induced ethylene response. Pectin fragments, resulting from partial acid hydrolysis or Pectolyase digestion, caused an increase in ethylene production when injected into the peel of intact orange fruits. Pectic fragments produced by fungal enzymes are known to be elicitors of phytoalexins and in this study are shown to elicit ethylene in citurs.