Počet záznamů: 1  

Polyphasic approach to a characteristic Ulva population from a limno–rheocrenic, mineral (chloride, sodium, sulphate) spring in the Siwa Oasis (Western Desert of Egypt)

  1. 1.
    SYSNO ASEP0496813
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevPolyphasic approach to a characteristic Ulva population from a limno–rheocrenic, mineral (chloride, sodium, sulphate) spring in the Siwa Oasis (Western Desert of Egypt)
    Tvůrce(i) Saber, A. A. (EG)
    Mareš, Jan (BC-A) RID, ORCID
    Guella, G. (IT)
    Anesi, A. (IT)
    Štenclová, Lenka (BC-A) ORCID, RID
    Cantonati, M. (IT)
    Zdroj.dok.Fottea. - : Česká algologická společnost - ISSN 1802-5439
    Roč. 18, č. 2 (2018), s. 227-242
    Poč.str.16 s.
    Jazyk dok.eng - angličtina
    Země vyd.CZ - Česká republika
    Klíč. slovaUlva flexuosa subsp. paradoxa ; Chlorophyta ; Saharan habitats ; mineral spring ; morphotaxonomy
    Vědní obor RIVEF - Botanika
    Obor OECDPlant sciences, botany
    Institucionální podporaBC-A - RVO:60077344
    UT WOS000457025500010
    DOI10.5507/fot.2018.008
    AnotaceAn interesting population of ulvacean green algae was collected from a limno-rheocrenic, thermal, mineral (chloride, sodium, sulphate) spring known as Ain Abu Sherouf in the Siwa Oasis, the Western Desert of Egypt. A detailed combined investigation on its morphotaxonomy, autecology, and a multilocus sequence data set including the chloroplast-encoded rbcL gene and the nuclear-encoded nrDNA SSU and ITS allowed us to identify this population as Ulva flexuosa subsp. paradoxa (syn. Ulva paradoxa, Ulvales, Chlorophyta), although the algal thalli were in average narrower than usual in this taxon. Analysis of the molecular rbcL-ITS sequencing data demonstrated a close phylogenetic relationship of the studied population to two Ulva isolates from Japan and China and their taxonomic status was further discussed. The pigment profiling confirmed chlorophylls and carotenoids typical of the Ulvaceae (lutein, α/β-carotenes, violaxanthin, and neoxanthin). Lipidomic analysis revealed the presence of the monogalactosyl diacylglycerols (MGDG), digalactosyl diacylglycerols (DGDG), sulfoquinovosyl diacylglycerols (SQDG), and diacylglyceryl N,N,N-trimethylhomoserine (DGTS) lipid classes. Presence of the plasma membrane DGTS lipids in remarkable proportion might be an adaptation to this nutrient-poor mineral spring habitat, with relatively low phosphorus values. The lower unsaturation index (UI) values of the plastidial DGDG and SQDG lipids are likely to reflect the need to maintain adequate membrane fluidity in this thermal mineral spring system. This polyphasic study not only extended our little knowledge on the distribution, autecology, and adaptive mechanisms of U. flexuosa subsp. paradoxa in the Saharan habitats of Africa, but also re-assessed and refined the taxonomic and phylogenetic affiliation of previously sampled close relatives from East Asia.
    PracovištěBiologické centrum (od r. 2006)
    KontaktDana Hypšová, eje@eje.cz, Tel.: 387 775 214
    Rok sběru2019
Počet záznamů: 1  

  Tyto stránky využívají soubory cookies, které usnadňují jejich prohlížení. Další informace o tom jak používáme cookies.