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@ARTICLE{Hammel:89751,
      author       = {Hammel, J. U. and Herzen, J. and Beckmann, F. and Nickel,
                      M. and DESY},
      title        = {{S}ponge budding is a spatiotemporal morphological
                      patterning process: {I}nsights from synchrotron
                      radiation-based x-ray microtomography into the asexual
                      reproduction of {T}ethya wilhelma},
      journal      = {Frontiers in zoology},
      volume       = {6},
      issn         = {1742-9994},
      address      = {London},
      publisher    = {BioMed Central},
      reportid     = {PHPPUBDB-12788},
      pages        = {19},
      year         = {2009},
      abstract     = {Primary agametic-asexual reproduction mechanisms such as
                      budding and fission are present in all non-bilaterian and
                      many bilaterian animal taxa and are likely to be metazoan
                      ground pattern characters. Cnidarians display highly
                      organized and regulated budding processes. In contrast,
                      budding in poriferans was thought to be less specific and
                      related to the general ability of this group to reorganize
                      their tissues. Here we test the hypothesis of morphological
                      pattern formation during sponge budding.We investigated the
                      budding process in Tethya wilhelma (Demospongiae) by
                      applying 3D morphometrics to high resolution synchrotron
                      radiation-based x-ray microtomography (SR-muCT) image data.
                      We followed the morphogenesis of characteristic body
                      structures and identified distinct morphological states
                      which indeed reveal characteristic spatiotemporal
                      morphological patterns in sponge bud development. We
                      discovered the distribution of skeletal elements, canal
                      system and sponge tissue to be based on a sequential series
                      of distinct morphological states. Based on morphometric data
                      we defined four typical bud stages. Once they have reached
                      the final stage buds are released as fully functional
                      juvenile sponges which are morphologically and functionally
                      equivalent to adult specimens.Our results demonstrate that
                      budding in demosponges is considerably more highly organized
                      and regulated than previously assumed. Morphological pattern
                      formation in asexual reproduction with underlying genetic
                      regulation seems to have evolved early in metazoans and was
                      likely part of the developmental program of the last common
                      ancestor of all Metazoa (LCAM).},
      cin          = {HASYLAB / GKSS},
      ddc          = {590},
      cid          = {$I:(DE-H253)HASYLAB_-2012_-20130307$ /
                      I:(DE-H253)HZG-20120731},
      pnm          = {DORIS Beamline BW2 (POF1-550) / FS-Proposal: I-20051083
                      (I-20051083) / FS-Proposal: I-20060252 (I-20060252)},
      pid          = {G:(DE-H253)POF1-BW2-20130405 / G:(DE-H253)I-20051083 /
                      G:(DE-H253)I-20060252},
      experiment   = {EXP:(DE-H253)D-BW2-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:19737392},
      pmc          = {pmc:PMC2749020},
      UT           = {WOS:000270886200001},
      doi          = {10.1186/1742-9994-6-19},
      url          = {https://bib-pubdb1.desy.de/record/89751},
}