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Chlorophyllase activity in chlorophyll-free citrus chromoplasts

Identifieur interne : 004A99 ( Main/Merge ); précédent : 004A98; suivant : 004B00

Chlorophyllase activity in chlorophyll-free citrus chromoplasts

Auteurs : R. Hirschfeld [Israël] ; E. Goldschmidt [Israël]

Source :

Plant Cell Reports [ 0721-7714 ] ; 1983-06-01.

RBID : ISTEX:86108F828416028AD913786DCD3484FD88E2C0ED

Abstract

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.

Url:

https://api.istex.fr/document/86108F828416028AD913786DCD3484FD88E2C0ED/fulltext/pdf

DOI: 10.1007/BF00269332

Links to Exploration step

ISTEX:86108F828416028AD913786DCD3484FD88E2C0ED

Le document en format XML

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<front><div type="abstract" xml:lang="en">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.</div>
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Chlorophyllase activity in chlorophyll-free citrus chromoplasts

Chlorophyllase activity in chlorophyll-free citrus chromoplasts

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Abstract

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