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Effects of ultraviolet microbeam irradiation on morphogenesis in Euplotes by Benjamin N. Wise is a Environmental Science article available to read on EtoBox.

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Developmental mechanisms in Euplotes plumipes were analyzed in terms of the response to damage produced by a UV microbeam. Individual animals, representing all stages of the morphogenetic cycle, were irradiated at a variety of cortical sites, including bases of mature cirri and membranelles, primordial structures, and non-ciliated regions; they were then observed and fixed for silver-staining. Immediate damage is restricted to cortical and ciliary structures directly irradiated. Irradiated cirri and membranelles, including their associated basal structures (infraciliature), are effectively destroyed after about two minutes exposure to the UV microbeam. Contrary to what might be expected from the reports of earlier workers using microsurgical techniques, no regeneration response ensues following such damage in these animals. Damage to cirri perists until these organelles are replaced during normal pre-division morphogenesis; damage to adoral membranelles, which are not normally replaced at division, persists indefinitely through succeeding generations of proters. It is concluded that destruction of infraciliary structures does not, in itself, provide a sufficient stimulus to regener

Who reads Effects of ultraviolet microbeam irradiation on morphogenesis in Euplotes?

Author

Benjamin N. Wise

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0022-104X)

Published

1965

Language

EN

ISBN

9781401590208

Field

Environmental Science (Life Sciences)