Number of the records: 1  

Comparison of light and dark nitrogenase activity in selected soil cyanobacteria

    1.
    SYSNO ASEP0105451
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JOstatní články
    NázevComparison of light and dark nitrogenase activity in selected soil cyanobacteria
    Překlad názvuPorovnání světelné a temnostní nitrogenázové aktivity vybraných půdních sinic
    Tvůrce(i) Hrouzek, Pavel (UPB-H)
    Lukešová, Alena (UPB-H)
    Šimek, Miloslav (UPB-H)
    Zdroj.dok.Folia Microbiologica. - : Springer - ISSN 0015-5632
    Roč. 49, č. 4 (2004), s. 435-440
    Poč.str.6 s.
    Jazyk dok.eng - angličtina
    Země vyd.CZ - Česká republika
    Klíč. slovalight and dark nitrogenase activity ; soil cyanobacteria
    Vědní obor RIVEH - Ekologie - společenstva
    CEZAV0Z6066911 - UPB-H, BC-A
    AnotaceFrequency of heterocytes and nitrogenase activity (NA) under light and dark cultivation conditions was determined in 12 cyanobacterial strains isolated from various soil habitats. In spite of a high variability, significant differences in NA among the strains were found in response of light and dark cultivation. Relatively high NA (9,9-15,3 µmol/h C2H4 per g fresh mass) under light conditions and basal NA after 12 h of dark cultivation were detected in Anabaena, Nodularia, Tolypothrix, and 1 of Cylindrospermum strains. On the other hand, significantly lower NA (0,76-5,4 µmol/h C2H4 per g fresh mass) was found under light conditions in Trichormus, Nostoc and another Cylindrospermum strains; the activity completely disappeared after 12 h of dark cultivation. NA values were not directly related to the frequency of the heterocytes. The total NA of cyanobacterial colony was found to be probably independent of the number and/or position of heterocytes. Remarkable differences in NA between strains isolated from cultivated fields and strains originating from natural or non-cultivated soils were found
    PracovištěÚstav půdní biologie (do r. 2005)
    KontaktIvana Chytková, chytkova@upb.cas.cz, Tel.: 387 775 753
    Rok sběru2005

Number of the records: 1  

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