Fatty acids as chemotaxonomic and ecophysiological traits in green microalgae (desmids, Zygnematophyceae, Streptophyta): A discriminant analysis approach.
2020
Tip dokumenta:
Članak u časopisu (Objavljena verzija)
,
© 2019 Elsevier Ltd
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
Desmids (Zygnematophyceae) are a group of poorly studied green microalgae. The aim of the present study was to identify fatty acids (FAs) that could be used as biomarkers in desmids in general, and to determine FAs as traits within different ecophysiological desmid groups. FA profiles of 29 desmid strains were determined and analysed with respect to their geographic origin, trophic preference and age of cultivation. It appeared that merely FAs present in relatively large proportions such as palmitic, linoleic, α-linolenic and hexadecatrienoic acids could be used as biomarkers for reliable categorization of this microalgal group. Linear discriminant analysis applied to three a priori defined groups of desmids, revealed clear strain-specific characteristics regarding FA distribution, influenced by climate and trophic conditions at the source sites as well as by the age of culture and growth phase. Accordingly, when considering FAs for the determination of lower taxonomic ranks we recommend using the term "trait" instead of "biomarker", as the latter designates unchangeable "fingerprint" of a specific taxon. Furthermore, despite that desmids were regarded as microalgae having stable genomes, long-term cultivation appeared to cause modifications in FA metabolic pathways, evident as a larger proportion of stearidonic acid in desmid strains cultivated over extensive time periods (>35 years).
Ključne reči:
Biomarker; Chemotaxonomy; Desmids; Discriminant analysis; Ecophysiological trait; Stearidonic acid; ZygnematophyceaeIzvor:
Phytochemistry, 2020, 170, 112200-Finansiranje / projekti:
- Ekofiziološke adaptivne strategije biljaka u uslovima multipnog stresa (RS-MESTD-Basic Research (BR or ON)-173018)
- Swedish Institute No. 02390/2016
- University of Gothenburg
DOI: 10.1016/j.phytochem.2019.112200
PubMed: 31756679
WoS: 000508761600009
Scopus: 2-s2.0-85075153249
URI
https://www.sciencedirect.com/science/article/pii/S0031942219304558?via%3Dihubhttps://radar.ibiss.bg.ac.rs/handle/123456789/3529