Phylogenetic characterization and morphological and physiological aspects of a novel acidotolerant and halotolerant microalga Coccomyxa onubensis sp. nov. (Chlorophyta, Trebouxiophyceae)
Fuentes JL, Huß V, Montero Z, Torronteras R, Cuaresma M, Garbayo I, Vílchez C (2016)
Publication Language: English
Publication Type: Journal article, Original article
Publication year: 2016
Journal
Book Volume: 28
Pages Range: 3269–3279
DOI: 10.1007/s10811-016-0887-3
Abstract
The genus Coccomyxa comprises green microalgae,
which can be found worldwide in remarkably versatile aquatic
and terrestrial ecosystems including symbiotic associations
with a number of different hosts. In this study, we describe a
new species, Coccomyxa onubensis, based on 18S and ITS
ribosomal DNA (rDNA) sequence data. Coccomyxa onubensis
was isolated from acidic water, and its ability to adapt to a wide
range of acidic and alkaline pH values and to high salinity was
analyzed. The long-termadaptation capacity of the microalga to
such extreme conditions was evaluated by performing continuous
repeated batches at selected salt concentrations and pH
values. Adapted cultures of C. onubensis were found to yield
high biomass productivities from pH 2.5 to 9, with maximum
yields at acidic pH between 2.5 and 4.5. Moreover, C.
onubensis was also found to adapt to salinities as high as
0.5 M NaCl, reaching biomass productivities that were similar
to those of control cultures. Ultrastructural analysis by transmission
electron microscopy of C. onubensis cells adapted to
high salinity showed a robust response to hyperosmotic shock.
Thus, C. onubensis was found to be acidotolerant and
halotolerant. High biomass productivity over a wide range of pH and salinities denotes C. onubensis as an interesting candidate
for various biotechnological applications including outdoor
biomass production.
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Spain (ES)How to cite
APA:
Fuentes, J.L., Huß, V., Montero, Z., Torronteras, R., Cuaresma, M., Garbayo, I., & Vílchez, C. (2016). Phylogenetic characterization and morphological and physiological aspects of a novel acidotolerant and halotolerant microalga Coccomyxa onubensis sp. nov. (Chlorophyta, Trebouxiophyceae). Journal of Applied Phycology, 28, 3269–3279. https://doi.org/10.1007/s10811-016-0887-3
MLA:
Fuentes, Juan L, et al. "Phylogenetic characterization and morphological and physiological aspects of a novel acidotolerant and halotolerant microalga Coccomyxa onubensis sp. nov. (Chlorophyta, Trebouxiophyceae)." Journal of Applied Phycology 28 (2016): 3269–3279.
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