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Bio-optical characterization of selected cyanobacteria strains present in marine and freshwater ecosystems
The optical properties, i.e., absorption and scattering spectra of ten strains of cyanobacteria from the Baltic Sea and Pomeranian lakes ( Aphanizomenon flos-aquae KAC 15, Microcystis aeruginosa CCNP 1101, Anabaena sp. CCNP 1406, Synechocystis salina CCNP 1104, Phormidium sp. CCNP 1317, Nodularia sp...
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Published in: | Journal of applied phycology 2016-08, Vol.28 (4), p.2299-2314 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The optical properties, i.e., absorption and scattering spectra of ten strains of cyanobacteria from the Baltic Sea and Pomeranian lakes (
Aphanizomenon flos-aquae
KAC 15,
Microcystis aeruginosa
CCNP 1101,
Anabaena
sp. CCNP 1406,
Synechocystis salina
CCNP 1104,
Phormidium
sp. CCNP 1317,
Nodularia spumigena
CCNP 1401,
Synechococcus
sp. CCNP 1108,
Nostoc
sp. CCNP 1411,
Cyanobacterium
sp. CCNP 1105,
Pseudanabaena cf. galeata
CCNP 1312) grown under low light conditions were investigated. Moreover, the chlorophylls, carotenoids, and phycobilin composition as well as the size structure of chosen cyanobacteria were measured. Studied species revealed high diversity both in optical properties with the absorption spectra similarity index ranging from 0.67 to 0.94 and the pigment composition. The chlorophyll-specific absorption coefficient at 440 nm
a
ph
*(440) varied between 0.017 and 0.065 m
2
mg
−1
. The influence of the package effect was only observed in the case of large filamentous cyanobacteria like
N. spumigena
or
Nostoc
sp. Interestingly, the package effect factor
Q
a
*(675) for large-celled
Anabaena
sp. was 0.92. Besides chlorophyll
a
, only echinenone,
β
-carotene, and phycocyanin were present in all analyzed cyanobacteria strains. Zeaxanthin, which is widely used as a marker pigment for cyanobacteria, was absent in the toxic
N. spumigena
and
Anabaena
sp., which are the species that occur in the Baltic Sea most frequently causing summer cyanobacterial blooms. The investigation also showed that the sample preservation technique can introduce some major errors within the absorption band affected by the phycocyanin absorption. |
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ISSN: | 0921-8971 1573-5176 |
DOI: | 10.1007/s10811-015-0774-3 |