Biochimica et Biophysica Acta (BBA) - Bioenergetics
 2021
DOI: 10.1016/j.bbabio.2021.148400
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Time-resolved comparative molecular evolution of oxygenic photosynthesis

Thomas J. Oliver
1
,
Patricia Sánchez‐Baracaldo
2
,
Anthony W. D. Larkum
3
et al.

Abstract: Oxygenic photosynthesis starts with the oxidation of water to O 2 , a light-driven reaction catalysed by photosystem II. Cyanobacteria are the only prokaryotes capable of water oxidation and therefore, it is assumed that the origin of oxygenic photosynthesis is a late innovation relative to the origin of life and bioenergetics. However, when exactly water oxidation originated remains an unanswered question. Here we use phylogenetic analysis to study a gene duplication event that is uniqu… Show more

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Cited by 71 publications

(73 citation statements)
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“…S7A). This is consistent with the reported phylogenetic relationship between CP43 and Pcb proteins and support the idea that PcbA and IsiA are more closely related to each other than to PcbC ( 50 ). The structures of the PcbA-type antenna are also highly similar to that of IsiA (fig.…”
Section: Resultssupporting
confidence: 91%
“…PcbA antennas have similar structure and pigment arrangement as the IsiA, whereas the PcbC antenna exhibits some different structures and binding sites of pigment. This is consistent with previous phylogenetic analysis ( 50 ). In addition, the A. marina Pcb antennas contain a number of Zea similar to that of the Lhcr antennas in red algae PSI but different from the LHC antennas from other organisms ( 61 ), suggesting that the Pcb antennas may play an important role in photoprotection in A. marina .…”
Section: Discussionsupporting
confidence: 94%
See 1 more Smart Citation
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
show abstract
“…S7A). This is consistent with the reported phylogenetic relationship between CP43 and Pcb proteins and support the idea that PcbA and IsiA are more closely related to each other than to PcbC ( 50 ). The structures of the PcbA-type antenna are also highly similar to that of IsiA (fig.…”
Section: Resultssupporting
confidence: 91%
“…PcbA antennas have similar structure and pigment arrangement as the IsiA, whereas the PcbC antenna exhibits some different structures and binding sites of pigment. This is consistent with previous phylogenetic analysis ( 50 ). In addition, the A. marina Pcb antennas contain a number of Zea similar to that of the Lhcr antennas in red algae PSI but different from the LHC antennas from other organisms ( 61 ), suggesting that the Pcb antennas may play an important role in photoprotection in A. marina .…”
Section: Discussionsupporting
confidence: 94%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
show abstract
“…There is coherent evidence for oxygenic photosynthesis by 2.945 Ga [56,57] and so our inference, that modern photosynthesis pathways rise from 25% completeness at 3 Ga to 50% complete at 2.5 Ga is consistent with this. The inferred late origin of anoxygenic photosynthesis is surprising but consistent with some other studies [58,59], although there is no consensus [60]. If the earliest photosynthesizers were anoxygenic [61], our analysis suggests they are not direct ancestors of modern anoxygenic photosynthetic bacteria, which are mainly found in rare reducing lakes.…”
Section: Discussionsupporting
confidence: 85%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
show abstract
“…To provide insight into the evolution of the FRL-PSII subunits, we generated phylogenetic trees for each of the core subunits: PsbA, PsbD, PsbC, PsbB, and PsbH (Figure 1 and Supplementary Figures S1−S5). The evolution of PsbA has been studied in detail [35][36][37][38] and the tree shown in Figure 1 is generally consistent with those shown before. The tree includes two PsbA paralogs of importance for FaRLiP: (1) the Chl f synthase, also known as ChlF [39][40][41] or Group 1 (G1); and (2) FRL-PsbA, which enables water oxidation under FaRLiP.…”
Section: Phylogenetic Analysissupporting
confidence: 82%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
show abstract
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