Synchytrium taraxaci – A Chytrid on Dandelion

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  • June 14, 2015 at 2:39 pm #29468
    Lancashire Lad
    Moderator

      EDITED 16/05/15 – THREAD RE-TITLED MORE APPROPRIATELY TO ASSIST WITH FUTURE SEARCHES (Refer To Post 3 Below).

      HI all,

      I found this yesterday, on live Dandelion leaves.

      Presumably a stage of Puccinia variabilis, P.hieracii var hieracii, or P.dioicae – but with my limited experience I’m not making any headway as to which stage of which species it might be. 😳

      Any help or suggestions as to exactly what I’ve got here would be greatly appreciated.

      Click on Images to view at full size.

      Dandelion Rust(1).jpg

      [attachment=2]Dandelion Rust(1).jpg[/attachment]Rust sori on underside of leaf.

      Dandelion Rust (2).jpg

      [attachment=1]Dandelion Rust (2).jpg[/attachment]Close up view of rust sori.

      Dandelion Rust x200 With Scale 130615.jpg

      [attachment=0]Dandelion Rust x200 With Scale 130615.jpg[/attachment]Spores ?? x200

      Regards,

      Mike.

      June 16, 2015 at 6:26 pm #34965
      Chris Yeates

        Hi Mike

        I can see why you might be confused. This doesn’t really look like a rust (no dry spores of any of the possible stages bursting out). Its a chytrid Synchytrium taraxaci.

        See:

        Syntar0a.jpg

        [attachment=0]Syntar0a.jpg[/attachment]
        and http://bioref.lastdragon.org/Chytridiomycetes/Synchytrium_taraxaci.html” class=”bbcode_url”>http://bioref.lastdragon.org/Chytridiomycetes/Synchytrium_taraxaci.html

        cheers

        Chris

        June 16, 2015 at 7:42 pm #34966
        Lancashire Lad
        Moderator

          Chris Yeates wrote:

          Hi Mike

          I can see why you might be confused. This doesn’t really look like a rust (no dry spores of any of the possible stages bursting out). Its a chytrid Synchytrium taraxaci.

          See:
          [attachment=0]Syntar0a.jpg[/attachment]
          and http://bioref.lastdragon.org/Chytridiomycetes/Synchytrium_taraxaci.html” class=”bbcode_url”>http://bioref.lastdragon.org/Chytridiomycetes/Synchytrium_taraxaci.html

          cheers

          Chris


          Brilliant! Thanks a lot Chris.

          I knew there had to be a logical answer, and this solves another puzzle that I had, as I found something on Dandelion last week in the same general area, which I now know was obviously a slightly less well developed outbreak of the same species.

          I will rename the thread to “Synchytrium taraxaci – A Chytrid on Dandelion” as it will then be better placed to allow for future searches to find your excellent colour plate and link.

          Best regards,

          Mike.

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