2022
DOI: 10.1186/s12915-022-01480-3
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Red algae acclimate to low light by modifying phycobilisome composition to maintain efficient light harvesting

Abstract: Background Despite a global prevalence of photosynthetic organisms in the ocean’s mesophotic zone (30–200+ m depth), the mechanisms that enable photosynthesis to proceed in this low light environment are poorly defined. Red coralline algae are the deepest known marine benthic macroalgae — here we investigated the light harvesting mechanism and mesophotic acclimatory response of the red coralline alga Lithothamnion glaciale. Results Following initia… Show more

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Cited by 8 publications
(13 citation statements)
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“…In response to this, clear indicators for depth-driven photo-acclimation were observed at lower light levels, including an increase in α , a decrease in rETR max and a decrease in the saturating irradiance ( E k ). This provides important field-based evidence to complement recent experimental definition of the light-harvesting pathway in red coralline algae [28]. Some caution must be given to PAM fluorescence interpretations, especially for the red algae, because of signal interactions from other pigments and a lack of corresponding photosynthetic rate measurements [19,28].…”
Section: Discussionmentioning
confidence: 74%
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“…In response to this, clear indicators for depth-driven photo-acclimation were observed at lower light levels, including an increase in α , a decrease in rETR max and a decrease in the saturating irradiance ( E k ). This provides important field-based evidence to complement recent experimental definition of the light-harvesting pathway in red coralline algae [28]. Some caution must be given to PAM fluorescence interpretations, especially for the red algae, because of signal interactions from other pigments and a lack of corresponding photosynthetic rate measurements [19,28].…”
Section: Discussionmentioning
confidence: 74%
“…This provides important field-based evidence to complement recent experimental definition of the light-harvesting pathway in red coralline algae [28]. Some caution must be given to PAM fluorescence interpretations, especially for the red algae, because of signal interactions from other pigments and a lack of corresponding photosynthetic rate measurements [19,28]. Nevertheless, our approach enabled us to maintain methodological consistency between RLCs (e.g.…”
Section: Discussionmentioning
confidence: 80%
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