Prochlorococcus marinus responses to light and oxygen
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F24%3A00588256" target="_blank" >RIV/61388971:_____/24:00588256 - isvavai.cz</a>
Result on the web
<a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0307549#sec001" target="_blank" >https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0307549#sec001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1371/journal.pone.0307549" target="_blank" >10.1371/journal.pone.0307549</a>
Alternative languages
Result language
angličtina
Original language name
Prochlorococcus marinus responses to light and oxygen
Original language description
Prochlorococcus marinus, the smallest picocyanobacterium, comprises multiple clades occupying distinct niches, currently across tropical and sub-tropical oligotrophic ocean regions, including Oxygen Minimum Zones. Ocean warming may open growth-permissive temperatures in new, poleward photic regimes, along with expanded Oxygen Minimum Zones. We used ocean metaproteomic data on current Prochlorococcus marinus niches, to guide testing of Prochlorococcus marinus growth across a matrix of peak irradiances, photoperiods, spectral bands and dissolved oxygen. MED4 from Clade HLI requires greater than 4 h photoperiod, grows at 25 mu mol O-2 L-1 and above, and exploits high cumulative diel photon doses. MED4, however, relies upon an alternative oxidase to balance electron transport, which may exclude it from growth under our lowest, 2.5 mu mol O-2 L-1, condition. SS120 from clade LLII/III is restricted to low light under full 250 mu mol O-2 L-1, shows expanded light exploitation under 25 mu mol O-2 L-1, but is excluded from growth under 2.5 mu mol O-2 L-1. Intermediate oxygen suppresses the cost of PSII photoinactivation, and possibly the enzymatic production of H2O2 in SS120, which has limitations on genomic capacity for PSII and DNA repair. MIT9313 from Clade LLIV is restricted to low blue irradiance under 250 mu mol O-2 L-1, but exploits much higher irradiance under red light, or under lower O-2 concentrations, conditions which slow photoinactivation of PSII and production of reactive oxygen species. In warming oceans, range expansions and competition among clades will be governed not only by light levels. Short photoperiods governed by latitude, temperate winters, and depth attenuation of light, will exclude clade HLI (including MED4) from some habitats. In contrast, clade LLII/III (including SS120), and particularly clade LLIV (including MIT9313), may exploit higher light niches nearer the surface, under expanding OMZ conditions, where low O-2 relieves the stresses of oxidation stress and PSII photoinhibition.
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
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PLoS ONE
ISSN
1932-6203
e-ISSN
1932-6203
Volume of the periodical
19
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
32
Pages from-to
e0307549
UT code for WoS article
001275033300059
EID of the result in the Scopus database
2-s2.0-85199257559