ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • Barley  (1)
  • Cyanidium caldarium  (1)
  • 1
    ISSN: 1572-8773
    Schlagwort(e): Barley ; Fe-deficiency ; Phytosiderophore ; Plasma membrane ; Transporter
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Summary We have investigated the mugineicacid-Fe transport activity of Fe-deficient barley roots, using the multi-compartment transport box system. The roots maintained Fe transport activity for 20 h after excision. The following results were obtained. (1) In Fe-deficient roots, mugineic acid addition enhanced the transport of Fe by 32.2 times over that of the control (with FeC13 addition). (2) The mugineic-acid-55Fe transport activity of Fe-deficient roots was 18.4-fold higher than that of the Fe-sufficient roots. (3) The mugineic-acid-55Fe transport activity was decreased (7.13% based on the control) by treatment with 5 μM carbonylcyanidem-chlorophenyl hydrazone (CCCP). Pretreatment with 0.1 mM dicyclohexyl carbodiimide (DCCD) lowered the transport activity (10.7% based on the control) and 1 mMN-ethylmaleimide (NEM) pretreatment reduced the transport activity to a value equivalent to 2.41% of that in the control. It is concluded that mugineicacid-Fe transporter is induced in its activity and/or amount by Fe-deficiency treatment and has an SH residue at its active site, and that the transporter needs the proton motive force produced by ATPase. We detected three polypeptides (14, 28 and 40 kDa) in the root plasma membrane that were induced under Fe-deficiency treatment.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Hydrobiologia 433 (2000), S. 57-60 
    ISSN: 1573-5117
    Schlagwort(e): aluminium ; Cyanidium caldarium ; acidophile ; thermophile ; red alga
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Cyanidium caldarium, an acidophilic, thermophilic red alga, specifically tolerates Al. The tolerance increases at lower culture temperatures. The intracellular Al concentration is kept at low levels, especially when the cells are cultured at lower temperatures. Lower Al incorporation accounts for the Al tolerance in this alga. Fe incorporation antagonizes the Al incorporation, implying that Fe transporters incorporate Al ions. Treatment with an uncoupler, carbonylcyanide m-chlorophenylhydrazone, increases the intracellular concentration of Al. These results support the hypothesis that Al ions taken up by the algal cells are exported by an energy-dependent mechanism.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...