Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Fatty acid profiles and their distribution patterns in microalgae: a comprehensive analysis of more than 2000 strains from the SAG culture collection | Lang et al. BMC Plant Biology 2011 11 124 http 1471 -2229 11 124 BMC Plant Biology RESEARCH ARTICLE Open Access Fatty acid profiles and their distribution patterns in microalgae a comprehensive analysis of more than 2000 strains from the SAG culture collection Imke Lang1 2 Ladislav Hodac3 Thomas Friedl3 and Ivo Feussner 1 Abstract Background Among the various biochemical markers fatty acids or lipid profiles represent a chemically relatively inert class of compounds that is easy to isolate from biological material. Fatty acid FA profiles are considered as chemotaxonomic markers to define groups of various taxonomic ranks in flowering plants trees and other embryophytes. Results The fatty acid profiles of 2076 microalgal strains from the culture collection of algae of Gottingen University SAG were determined in the stationary phase. Overall 76 different fatty acids and 10 other lipophilic substances were identified and quantified. The obtained FA profiles were added into a database providing information about fatty acid composition. Using this database we tested whether FA profiles are suitable as chemotaxonomic markers. FA distribution patterns were found to reflect phylogenetic relationships at the level of phyla and classes. In contrast at lower taxonomic levels . between closely related species and even among multiple isolates of the same species FA contents may be rather variable. Conclusion FA distribution patterns are suitable chemotaxonomic markers to define taxa of higher rank in algae. However due to their extensive variation at the species level it is difficult to make predictions about the FA profile in a novel isolate. Background The analysis of the overall fatty acid profiles as well as the occurrence of fatty acids FAs in different lipid classes in microalgae is an emerging field which is expected to reveal the identification of novel FAs with a variety of new functional groups 1 . Despite a number of reports has been carried
