Rumpho, M. E., Pelletreau, K. N., Moustafa, A., & Bhattacharya, D. (2011). The making of a photosynthetic animal. Journal of Experimental Biology, 214(2), 303-311.

Summary

Symbiotic animals containing green photobionts challenge the common perception that only plants are capable of capturing the sun’s rays and converting them into biological energy through photoautotrophic CO2 fixation (photosynthesis). ‘Solar-powered’ sacoglossan molluscs, or sea slugs, have taken this type of symbiotic association one step further by solely harboring the photosynthetic organelle, the plastid (=chloroplast). One such sea slug, Elysia chlorotica, lives as a ‘plant’ when provided with only light and air as a result of acquiring plastids during feeding on its algal prey Vaucheria litorea. The captured plastids (kleptoplasts) are retained intracellularly in cells lining the digestive diverticula of the sea slug, a phenomenon sometimes referred to as kleptoplasty. Photosynthesis by the plastids provides E. chlorotica with energy and fixed carbon for its entire lifespan of~10 months. The plastids are not transmitted vertically (i.e. are absent in eggs) and do not undergo division in the sea slug.However, de novo protein synthesis continues, including plastid- and nuclear-encoded plastid-targeted proteins, despite the apparent absence of algal nuclei. Here we discuss current data and provide hypotheses to explain how long-term photosynthetic activity is maintained by the kleptoplasts. This fascinating ‘green animal’ provides a unique model to study the evolution of photosynthesis in a multicellular heterotrophic organism.

  • @Salamander@mander.xyzOP
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    3 years ago

    Thanks!

    It appears like the communities that I followed before I was in the allow-list will not be fetched automatically. Is there a way for me to jump start the automatic requests again?

    As an example, this announcement was not fetched: https://lemmy.ml/post/59511 even thought there are 3 subscribed users in the instance.

    • DessalinesA
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      33 years ago

      Any new posts after the first user has subscribed to the federated community, should be pushed. Sub to any popular community on lemmy.ml and let me know if new posts aren’t getting pushed to mander.

      cc @nutomic@lemmy.ml

    • @nutomicA
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      13 years ago

      If your instance is not on the allowlist of lemmy.ml, any community follow requests are silently ignored. We have an open issue for that. You need to unfollow the community, and follow it again.

      • DessalinesA
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        33 years ago

        I did add mander earlier today.

        • @nutomicA
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          23 years ago

          Yes but as I understand, they followed lemmy.ml communities before we added them to the allowlist.

      • @Salamander@mander.xyzOP
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        3 years ago

        Alright, thanks!

        I have done the following:

        • Clicked “remove”, then “restore” on all of the communities.
        • Made a new account and subscribed to all of the lemmy.ml communities

        I will see if this resolves it tomorrow. I am not sure if clicking remove/restore is enough to submit a new follow request.

        • @nutomicA
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          3 years ago

          You can check the logs if you received an Accept activity from the community. This is a bit tricky, you can find a description of activities in the docs.

          @dessalines@lemmy.ml Maybe we should show an explicit indicator in the UI if the follow succeeded, cause there are many cases where it could fail.

          • @Salamander@mander.xyzOP
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            13 years ago

            Thanks. I couldn’t figure out where these activity logs are stored. I checked the nginx logs and ‘docker-compose logs -f lemmy lemmy-ui pictrs’ with RUST_LOG set to verbose. I will read more carefully the docs tomorrow.

            • @nutomicA
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              23 years ago

              Then you should see them (in fact you only need docker-compose logs -f lemmy). Things like votes or posts/comments sent and received should also be visible there. Did you docker-compose up -d to reload the config?

              • @Salamander@mander.xyzOP
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                33 years ago

                It works. I can see the Accept events and the new posts are fetched.

                The problem was that RUST_LOG=verbose does not print anything. I had to set it to RUST_LOG=debug to see the activities.