Refereed journal article or data article (A1)

Photosynthetic hydrogen production as acclimation mechanism in nutrient-deprived Chlamydomonas




List of Authors: Taras Antal, Elena Petrova, Valeriya Slepnyova, Galina Kukarskikh, Alena Volgusheva, Alexandra Dubini, Adil Baizhumanov, Taina Tyystjärvi, Olga Gorelova, Olga Baulina, Olga Chivkunova, Alexei Solovchenko, Andrej Rubin

Publisher: ELSEVIER

Publication year: 2020

Journal: Algal Research

Journal name in source: ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS

Journal acronym: ALGAL RES

Volume number: 49

Number of pages: 13

ISSN: 2211-9264

eISSN: 2211-9264

DOI: http://dx.doi.org/10.1016/j.algal.2020.101951


Abstract
Green microalgae are able to sustain hydrogen evolution in the light under nutrient deprivation conditions. In the current study, the role of hydrogen photoproduction in the acclimation of Chlamydomonas reinhardtii cells to nutrient deficiency was investigated. In this regard, such physiological characteristics of algal cells as starch and adenosine triphosphate content, fatty acid composition, fermentation products, photosynthetic activity, cell mortality, culture recovery, and cell ultrastructure were compared between the hydEF-1 mutant lacking hydrogenase activity and its parent strain CC-425 under sulfur deficiency. The results showed an increased number of non-viable cells, altered cell ultrastructure, and modified lipid, carbohydrate, and energy metabolism in the mutant cells. We suggest that active hydrogenase provides benefits for algae acclimation to the anaerobic phase of nutrient deprivation by regulating intracellular redox and pH balance and improving performance of anaerobic metabolism.


Last updated on 2021-24-06 at 08:41