Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

INVESTIGATION OF CHLOROPLAST MEMBRANE FORMATION AND ITS CONTROL WITH THE AID OF HEAT-BLEACHED 70S RIBOSOME-DEFICIENT LEAVES

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Israel Journal of Plant Sciences

The formation of pigments, lipids and proteins of the chloroplast membranes in heat-treated 70S ribosome-deficient leaves is reviewed. In the light, 70S ribosome-deficient leaves were chlorotic, although they must contain virtually all the enzymes of chlorophyll biosynthesis. Carotenoids and all major chloroplast lipids (glycolipids mono-galactosyldiacylglycerol, digalactosyldiacylglycerol, sulfoquinovosyldiacylglycerol and prenylquinones plastoquinone-9, α-tocopherol, phylloquinone) were formed in heat-bleached 70S ribosome-deficient leaves. Their amounts were, however, lower than in normal green leaves because their synthesis appeared to be coupled by regulatory mechanisms to the availability of chlorophyll. Several membrane proteins and functions of the plastid envelope (e.g. dicarboxylic acid translocator activity) and internal membranes (e.g. ferredoxin, ferredoxin-NADP reductase, light-harvesting chlorophyll a/b- protein) were identified in 70S ribosome-deficient leaves. The 69 kD apoprotein of the chlorophyll-protein complex I, cytochrome a/b, and all subunits of the coupling factor CF, were not detected. In 70S ribosome-deficient leaves loosely associated membrane proteins (ferredoxin, ferredoxin-NADP reductase) accumulated to high levels (above 50% of controls), and carotenoids and chloroplast lipids to ca 20–30% of their amounts in green control leaves. Stringent coordinate controls existed between membrane constituents organized in membrane complexes (e.g. light-harvesting complex, subunits of CF1) restricting the accumulation of individual components.

Affiliations: 1: Botanisches Institut, J. W. Goethe-Universität

10.1080/0021213X.1984.10676991
/content/journals/10.1080/0021213x.1984.10676991
dcterms_title,pub_keyword,dcterms_description,pub_author
10
5
Loading
Loading

Full text loading...

/content/journals/10.1080/0021213x.1984.10676991
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1080/0021213x.1984.10676991
Loading

Article metrics loading...

/content/journals/10.1080/0021213x.1984.10676991
1984-05-13
2018-06-25

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
     
    Israel Journal of Plant Sciences — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation