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First Evidence That Some Insects May Rely On Photosynthesis

tedlistens writes "The idea that aphids may use photosynthesis, as plants do, is based on the recent finding that the bugs are able to synthesize pigments called carotenoids. These pigments are common and necessary for many animals (for non-photosynthesis uses, like maintaining a healthy immune system), but the animal must consume them from outside sources. So far, only plants, algae, fungi, and bacteria are known to be able to synthesize carotenoids themselves, and, in all of those organisms, carotenoids are a key part of photosynthesis. While the co-author of the study, published in Nature's open-access journal Scientific Reports, cautions that more research is needed before we can determine if aphids are photosynthesizing like non-animals, it still could be one of the more remarkable findings in biology in recent memory, and may hold promise for helping address humanity's food crisis."

13 of 107 comments (clear)

  1. You mean... little green men may help? by c0lo · · Score: 4, Funny
    TFS

    and may hold promise for helping address humanity's food crisis

    I imagine the ultimate solution would be to literally transform part of the human population into vegetables... able to absorb CO2, feed themselves in the Sun light and be happy no matter what the govts do to exploit them (+ be actually grateful for being pissed on).
    Maybe, in the first stage, FauxNews can help?

    --
    Questions raise, answers kill. Raise questions to stay alive.
  2. What food crisis? by NalosLayor · · Score: 5, Insightful

    No, seriously. There is no food crisis. As a species we have a food distribution problem, and a food wastage problem and they're rather shocking at that, but we really have no issue with feeding the population of earth today without resorting to eating genetically modified photosynthetic aphids. Now, a long term lack of motor fuel, is a problem, but aphids don't really solve that either. Mind you, this is scientifically interesting, but there really is no need to tie every technically interesting scientific discovery to the end of the world. Believe it or not, some of us like science for science's own sake.

    1. Re:What food crisis? by bill_mcgonigle · · Score: 4, Insightful

      There are too many people now

      No, there's plenty of room and we can feed them (to the extent that we don't put food into our gas tanks, anyhow).

      and we have no control over our own global population growth

      Education - it works every time it's tried. Parts of Europe are so 'successful' that their populations are shrinking. There are States that repress their people, but we'll get those dealt with one of these centuries.

      Arguing that there is currently no food crisis, but rather a distribution problem is specious.

      Or accurate, if you care to examine the data.

      --
      My God, it's Full of Source!
      OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
    2. Re:What food crisis? by Troed · · Score: 5, Interesting

      Exactly.

      "According to the World Resources Institute, global per capita food production has been increasing substantially for the past several decades."

      http://en.wikipedia.org/wiki/Food_security

    3. Re:What food crisis? by TimmyDee · · Score: 4, Informative

      I made that infographic you posted above (the one where you said there'd be plenty of room), and your claim isn't exactly true. You obviously didn't see my follow up infographic, showing that we'd all have to live lifestyles somewhat less resource intensive than the average Chinese person.

      Simply having enough space to cram people isn't everything.

      --
      Per Square Mile, a blog about density
  3. helping address humanity's food crisis. by fustakrakich · · Score: 5, Insightful

    Humanity's food crisis is a political problem, not a technical one.

    --
    “He’s not deformed, he’s just drunk!”
  4. What about Vespa Orientalis? by Anonymous Coward · · Score: 4, Informative

    Really the first? Vespa Orientalis has been shown to harvest sunlight for energy. Or does that not strictly count as photosnthesis?
    http://en.wikipedia.org/wiki/Vespa_orientalis

  5. People synthesize Vitamin D using sunlight by Anonymous Coward · · Score: 5, Informative

    That's probably a type of photosynthesis - using sunlight to produce Vitamin D from cholesterol, which is a vital hormone that 80% of us are lacking.
    You know, sunlight's purpose is not to cause cancer and cholesterol is not there to clog your arteries, nature has a purpose for everything.

    1. Re:People synthesize Vitamin D using sunlight by c0lo · · Score: 5, Insightful

      nature has a purpose for everything.

      Stop anthropomorphizing nature: it hates when you do it!

      --
      Questions raise, answers kill. Raise questions to stay alive.
  6. Re:Another quality slashdot article on science! by XiaoMing · · Score: 5, Insightful

    Considering how the peer-reviewed journal Nature ranks sixth overall in terms of impact factor, my guess is that there's more to the publication (and TFA) than your summary of it suggests.

  7. Re:Coral Symbiosis by Guppy · · Score: 5, Interesting

    Isn't this insect doing something like this coral symbiosis [wikipedia.org]?

    Before I popped open the article, I figured it was going to be another one of those symbiont cases, or at the most one of those kleptoplasty cases (where the organism integrates and uses ingested chloroplasts). Turns out it's much more interesting -- the aphid apparently has it's own carotenoid synthesis pathways, and (it is hypothesized) can use it to reduce NAD+ for the purposes of pumping protons to drive ATP synthesis.

    It's not a full photosynthesis pathway like plants have. They won't be able to get as much energy, nor can they fix CO2 to make organic substrates. But it is their own endogenous system that's at work (although parts of that system may have been obtained through horizontal gene transfer).

  8. Re:Another quality slashdot article on science! by Anonymous Coward · · Score: 4, Informative

    Bullshit. If you read that actual Nature paper, summarized:

    We report here that the capture of light energy in living aphids results in the photo induced electron transfer from excited chromophores to acceptor molecules. ...

    This appears as an archaic photosynthetic system consisting of photo-emitted electrons that are in fine funnelled into the mitochondrial reducing power in order to synthesize ATP molecules.

    The Nature paper doesn't talk about solving humanity's food crisis. Mother Board sort of half-assedly makes that claim by mentioning a food crisis and then saying that this doesn't solve it--yet. Nature wouldn't be that stupid to make such a dubious claim.

    The GPs criticism is valid.

  9. Re:Another quality slashdot article on science! by RDW · · Score: 4, Informative

    It isn't in Nature, it's in Scientific Reports, one of 'over 80' journals from the Nature Publishing Group

    http://www.nature.com/srep/about/index.html

    It's a new journal, with no impact factor yet.