Literature DB >> 24257977

Chlorophyllase activity in chlorophyll-free citrus chromoplasts.

K R Hirschfeld1, E E Goldschmidt.   

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.

Entities:  

Year:  1983        PMID： 24257977     DOI： 10.1007/BF00269332

Source DB:  PubMed          Journal:  Plant Cell Rep        ISSN： 0721-7714            Impact factor:   4.570


  6 in total

1.  Involvement of ethylene in chlorophyll degradation in peel of citrus fruits.

Authors:  A C Purvis; C R Barmore
Journal:  Plant Physiol       Date:  1981-10       Impact factor: 8.340

2.  Protein measurement with the Folin phenol reagent.

Authors:  O H LOWRY; N J ROSEBROUGH; A L FARR; R J RANDALL
Journal:  J Biol Chem       Date:  1951-11       Impact factor: 5.157

3.  Influence of lecithin liposomes on chlorophyllase-catalyzed chlorophyll hydrolysis: comparison of intramembraneous and solubilized Phaeodactylum chlorophyllase.

Authors:  W Terpstra
Journal:  Biochim Biophys Acta       Date:  1980-07-16

4.  Chlorophyll synthetase in chlorophyll-free chromoplasts.

Authors:  K Kreuz; H Kleinig
Journal:  Plant Cell Rep       Date:  1981-08       Impact factor: 4.570

5.  Purification and Properties of Chlorophyllase from Ailanthus altissima (Tree-of-Heaven).

Authors:  R F McFeeters; C O Chichester; J R Whitaker
Journal:  Plant Physiol       Date:  1971-05       Impact factor: 8.340

6.  Turnover of the glycerolipids of pumpkin leaves. The importence of phosphatidylcholine.

Authors:  P G Roughan
Journal:  Biochem J       Date:  1970-03       Impact factor: 3.857
  6 in total
  2 in total

1.  Chlorophyllase is a rate-limiting enzyme in chlorophyll catabolism and is posttranslationally regulated.

Authors:  Smadar Harpaz-Saad; Tamar Azoulay; Tzahi Arazi; Eran Ben-Yaakov; Anahit Mett; Yoel M Shiboleth; Stefan Hörtensteiner; David Gidoni; Amit Gal-On; Eliezer E Goldschmidt; Yoram Eyal
Journal:  Plant Cell       Date:  2007-03-16       Impact factor: 11.277

2.  Citrus chlorophyllase dynamics at ethylene-induced fruit color-break: a study of chlorophyllase expression, posttranslational processing kinetics, and in situ intracellular localization.

Authors:  Tamar Azoulay Shemer; Smadar Harpaz-Saad; Eduard Belausov; Nicole Lovat; Oleg Krokhin; Victor Spicer; Kenneth G Standing; Eliezer E Goldschmidt; Yoram Eyal
Journal:  Plant Physiol       Date:  2008-07-16       Impact factor: 8.340
  2 in total

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