Chlorophyllase activity in chlorophyll-free citrus chromoplasts

K. R. Hirschfeld*, E. E. Goldschmidt

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Chromoplast fractions from mature, chlorophyll-less 'Valencia' orange (Citrus sinensis L. Osbeck) flavedo (= the outer coloured layer of citrus peel) showed considerable chlorophyllase activity. Acetone powders prepared from chromoplast fractions had 2.5× higher specific activity than those prepared from whole flavedo. Exposure of mature, chlorophyll-less fruit to ethylene caused a 2.5 to 4.0 fold increase in chlorophyllase activity. Juice chromoplasts showed negligible chlorophyllase activity. The results suggest that chlorophyllase activity as well as its induction by ethylene are not dependent upon the presence of chlorophyll in the tissue.

Original languageEnglish
Pages (from-to)117-118
Number of pages2
JournalPlant Cell Reports
Volume2
Issue number3
DOIs
StatePublished - Jun 1983

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