Nonlinear effect of irradiance on photoheterotrophic activity and growth of the aerobic anoxygenic phototrophic bacterium Dinoroseobacter shibae
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F18%3A00488821" target="_blank" >RIV/61388971:_____/18:00488821 - isvavai.cz</a>
Result on the web
<a href="https://sfamjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1462-2920.14003" target="_blank" >https://sfamjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1462-2920.14003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/1462-2920.14003" target="_blank" >10.1111/1462-2920.14003</a>
Alternative languages
Result language
angličtina
Original language name
Nonlinear effect of irradiance on photoheterotrophic activity and growth of the aerobic anoxygenic phototrophic bacterium Dinoroseobacter shibae
Original language description
Aerobic anoxygenic photosynthetic bacteria are an important component of marine microbial communities. They produce energy in light using bacteriochlorophyll a containing photosystems. This extra energy provides an advantage over purely heterotrophic bacteria. One of the most intensively studied AAP bacteria is Dinoroseobacter shibae, a member of the environmentally important Roseobacter clade. Light stimulates its growth and metabolism, but the effect of light intensity remains unclear. Here, we show that an increase in biomass along an irradiance gradient followed the exponential rise to the maximum curve, with saturation at about 300 mu mol photons m(-2) s(-1), without any inhibition at light intensities up to 600 mu mol photons m(-2) s(-1). The cells adapted to higher irradiance by reducing pigmentation and increasing the electron transfer rate. This additional energy allowed D. shibae to redirect the metabolism of organic carbon sources such as glucose, leucine, glutamate, acetate and pyruvate toward anabolism, resulting in a twofold increase of their assimilation rates. We provide equations that can be feasibly incorporated into the existing model of D. shibae metabolism to further advance our understanding of the role of photoheterotrophy in the ocean.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology
Result continuities
Project
<a href="/en/project/LO1416" target="_blank" >LO1416: Algatech plus</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Microbiology Reports
ISSN
1758-2229
e-ISSN
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Volume of the periodical
20
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
724-733
UT code for WoS article
000425019400022
EID of the result in the Scopus database
2-s2.0-85042068333