2018
DOI: 10.20944/preprints201812.0087.v1
|View full text |Cite
Preprint
|
Sign up to set email alerts
|

Thinking Twice about the Evolution of Photosynthesis

Abstract: Sam Granick opened his seminal 1957 paper titled Speculations on the Origins and Evolution of Photosynthesis with the assertion that there is a constant urge in human beings to seek beginnings (I concur). This urge has led to an incessant stream of speculative ideas and debates on the evolution of photosynthesis that started in the first half of the twentieth century and shows no signs of abating. Some of these speculative ideas have become common place, are taken as fact, but find little support. Here I revie… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

0
8
0

Year Published

2019
2019
2021
2021

Publication Types

Select...
3
2

Relationship

1
4

Authors

Journals

citations
Cited by 5 publications
(8 citation statements)
references
References 109 publications
0
8
0
Order By: Relevance
“…Most of the gene families were gained in node 1 (34 families, Supplementary Table 8). Leaves have multiple origins in land plants 44,45 , however, the programs for oxygenic photosynthesis originated in ancient organisms 46 . In agreement, before the divergence of land plants, we observed enrichment for functions related to photosynthesis (<N8), and after the divergence of land plants, we detected enrichment for additional functions such as external stimuli response, cytoskeleton organization, phytohormone action, and protein modification (Supplementary Table 9).…”
Section: Resultsmentioning
confidence: 99%
“…Most of the gene families were gained in node 1 (34 families, Supplementary Table 8). Leaves have multiple origins in land plants 44,45 , however, the programs for oxygenic photosynthesis originated in ancient organisms 46 . In agreement, before the divergence of land plants, we observed enrichment for functions related to photosynthesis (<N8), and after the divergence of land plants, we detected enrichment for additional functions such as external stimuli response, cytoskeleton organization, phytohormone action, and protein modification (Supplementary Table 9).…”
Section: Resultsmentioning
confidence: 99%
“…It is worth highlighting that the deep divergence of anoxygenic and oxygenic photosystems (marked 2 and 3 in Fig. 1), could have been a response to dealing with oxygen itself (Orf et al, 2018;Cardona, 2019). In other words, the origin of water oxidation to oxygen not only predated the D1 and D2 duplication (marked 4 in Fig.…”
Section: Psiimentioning
confidence: 99%
“…It is now argued that the photosystems (marked 1 in Fig. 1) uniquely evolved the ability to perform water oxidation from the beginning and, as the photosystems further specialised, tis led to what we now know as oxygenic photosynthesis (Cardona, 2017;Cardona, 2019;. It is worth highlighting that the efficiency of enzymes carrying out water oxidation has changed and improved, and earlier forms predate the evolution of crown group Cyanobacteria (marked 5 in Figs 1, 3).…”
Section: The Origin Of Photosystem II (Psii) Vs the Origin Of Cymentioning
confidence: 99%
“…In other words, it is relatively easier to extract electrons from strong reductants such as H 2 and H 2 S. Hence, it is not surprising that microbes reliant on these reductants possess comparatively simpler photosynthetic machinery, i.e., they have only a single photosystem (PSI or PSII). It is commonly supposed that the anoxygenic photosynthesis (with its single photosystem) evolved on Earth earlier than its oxygenic counterpart (which has two photosystems), but the evidence favouring this hypothesis has been challenged as of late (Cardona, 2019).…”
Section: The Basis Of Photosynthesismentioning
confidence: 99%
“…they have only a single photosystem (PSI or PSII). It is commonly supposed that the anoxygenic photosynthesis (with its single photosystem) evolved on Earth earlier than its oxygenic counterpart (which has two photosystems), but the evidence favouring this hypothesis has been challenged as of late (Cardona 2019).…”
Section: Looking Beyond Conventional Photosynthesismentioning
confidence: 99%