In Synechococcus sp competition for energy between assimilation and acquisition of C and those of N only occurs when growth is light limited
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F17%3A00479323" target="_blank" >RIV/61388971:_____/17:00479323 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1093/jxb/erx074" target="_blank" >http://dx.doi.org/10.1093/jxb/erx074</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/jxb/erx074" target="_blank" >10.1093/jxb/erx074</a>
Alternative languages
Result language
angličtina
Original language name
In Synechococcus sp competition for energy between assimilation and acquisition of C and those of N only occurs when growth is light limited
Original language description
The carbon-concentrating mechanisms (CCMs) of cyanobacteria counteract the low CO2 affinity and CO2:O-2 selectivities of the Rubisco of these photolithotrophs and the relatively low oceanic CO2 availability. CCMs have a significant energy cost, if light is limiting, the use of N sources whose assimilation demands less energy could permit a greater investment of energy into CCMs and inorganic C (Ci) assimilation. To test this, we cultured Synechococcus sp. UTEX LB 2380 under either N or energy limitation, in the presence of NO3- or NH4+. When growth was energy-limited, NH4+ grown cells had a 1.2-fold higher growth rate, 1.3-fold higher dissolved inorganic carbon (DIC)-saturated photosynthetic rate, 19% higher linear electron transfer, 80% higher photosynthetic 1/K-1/2(DIC), 2.0-fold greater slope of the linear part of the photosynthesis versus DIC curve, 3.5-fold larger intracellular Ci pool, and 2.3-fold higher Zn quota than NO3--grown cells. When energy was not limiting growth, there were not differences between NH4+- and NO3- grown cells, except for higher linear electron transfer and larger intracellular Ci pool. nnWe conclude that, when energy limits growth, cells that use the cheaper N source divert energy from N assimilation to C acquisition and assimilation, this does not happen when energy is not limiting.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Experimental Botany
ISSN
0022-0957
e-ISSN
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Volume of the periodical
68
Issue of the periodical within the volume
14
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
3829-3839
UT code for WoS article
000410239600012
EID of the result in the Scopus database
2-s2.0-85030032695