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Researcher: Origin of photosynthesis founded on “incorrect assumptions”

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In an open access paper:

Thinking twice about the evolution of photosynthesis

Tanai Cardona

Published:20 March 2019 https://doi.org/10.1098/rsob.180246

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 commonplace, are taken as fact, but find little support. Here, I review and scrutinize three widely accepted ideas that underpin the current study of the evolution of photosynthesis: first, that the photochemical reaction centres used in anoxygenic photosynthesis are more primitive than those in oxygenic photosynthesis; second, that the probability of acquiring photosynthesis via horizontal gene transfer is greater than the probability of losing photosynthesis; and third, and most important, that the origin of anoxygenic photosynthesis pre-dates the origin of oxygenic photosynthesis. I shall attempt to demonstrate that these three ideas are often grounded in incorrect assumptions built on more assumptions with no experimental or observational support. I hope that this brief review will not only serve as a cautionary tale but also that it will open new avenues of research aimed at disentangling the complex evolution of photosynthesis and its impact on the early history of life and the planet. More.

“I shall attempt to demonstrate that these three ideas are often grounded in incorrect assumptions built on more assumptions with no experimental or observational support.”? The trouble with evidence is that it can go either way. Assumptions built on assumptions with the imprimatur of central dogma are much safer even if the outcome is crud.

See also: Researchers help build “public library” to understand photosynthesis.

Will A New Type Of Photosynthesis, Just Discovered, Change The Hunt For Alien Life?

Researchers clearly observe quantum effects in photosynthesis

and

Photosynthesis pushed back even further. Time to revisit the “Boring Billion” claim

2 Replies to “Researcher: Origin of photosynthesis founded on “incorrect assumptions”

  1. 1
    PeterA says:

    “research on Alzheimer’s may have been misdirected for decades based on premature adoption of an incorrect theory.”

    https://thebulwark.com/why-i-dont-believe-in-science/

  2. 2
    PeterA says:

    Researcher: Origin Of Photosynthesis Founded On “Incorrect Assumptions”

    What else is new?

    “Maxwell, one of the greatest physicists of all time, calculated the density — to three significant figures — of the æther, a substance that doesn’t exist. If that doesn’t make the case for the peril of over-reliance on theory — and the need for profound scientific humility — nothing will.”
    —Dr Behe’s response (part 3)

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