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May G, Müller WA. Interpersonale Differenzierung des Enzymaktivitäts-Musters bei dem polymorphen HydroidenHydractinia echinata. [Interpersonal differentiation of the enzymatic pattern in the polymorphic hydroidHydractinia echinata]. Wilehm Roux Arch Dev Biol. 1975;177(1):53-59doi: 10.1007/BF00848627.
May, G., & Müller, W. A. (1975). Interpersonale Differenzierung des Enzymaktivitäts-Musters bei dem polymorphen HydroidenHydractinia echinata. [Interpersonal differentiation of the enzymatic pattern in the polymorphic hydroidHydractinia echinata]. Wilhelm Roux's archives of developmental biology, 177(1), 53-59. https://doi.org/10.1007/BF00848627
May, Günther, and Müller, Werner A. "Interpersonale Differenzierung des Enzymaktivitäts-Musters bei dem polymorphen HydroidenHydractinia echinata." [Interpersonal differentiation of the enzymatic pattern in the polymorphic hydroidHydractinia echinata]. Wilhelm Roux's archives of developmental biology vol. 177,1 (1975): 53-59. doi: https://doi.org/10.1007/BF00848627
May G, Müller WA. Interpersonale Differenzierung des Enzymaktivitäts-Musters bei dem polymorphen HydroidenHydractinia echinata. [Interpersonal differentiation of the enzymatic pattern in the polymorphic hydroidHydractinia echinata]. Wilehm Roux Arch Dev Biol. 1975 Mar;177(1):53-59. doi: 10.1007/BF00848627. German. PMID: 28304649.
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Wilehm Roux Arch Dev Biol. 1975 Mar;177(1):53-59. doi: 10.1007/BF00848627.

[Interpersonal differentiation of the enzymatic pattern in the polymorphic hydroidHydractinia echinata].

Wilhelm Roux's archives of developmental biology

[Article in German]
Günther May, Werner A Müller

Affiliations

  1. Zoologisches Institut der Technischen Universität Braunschweig, Pockelsstr. 10a, D-3300, Braunschweig, Bundesrepublik Deutschland.

PMID: 28304649 DOI: 10.1007/BF00848627

Abstract

Interpersonal differentiation between gasterozooids and gonozooids, inHydractinia echinata, is reflected by the pattern of extractable enzyme activities. With regard to their activity levels in the different hydranths the enzymes can be arranged in two groups. In the first group the specific activities are highest in gasterozooids and decline in the order gasterozooids>male gonozooids>female gonozooids. This group includes GAPDH, LDH, ICDH, and GPT. The activities of the second group are highest in female polyps and display the inverse sequence. This group comprises CS, GOT, and GLDH. When the GAPDH levels, taken as 100 pc each, are chosen as point of reference only this second sequence can be established and is now represented by MDH, ICDH, and G-6-PDH as well. 6-PGDH activity could not be determined in adult hydranths.According to the ratio of GAPDH/CS and the LDH level the gasterozooids prefer the anaerobic glycolytic pathway whereas in the sexual hydranths relatively more substrate is supplied at the disposal of the citrate cycle. Two metabolites of the citrate cycle, ketoglutarate and succinate, are known to promote the transformation of nutritive zooids into sexual zooids. The differences observed in the activities of GOT, GLDH, and ICDH, therefore, may be correlated not only with the production of gonocytes but also with the specific type of differentiation which in sexual hydranths is governed by a specific morphogen.

References

  1. Wilhelm Roux Arch Entwickl Mech Org. 1969 Mar;164(1):37-47 - PubMed
  2. Wilehm Roux Arch Dev Biol. 1975 Sep;177(3):235-254 - PubMed
  3. Wilhelm Roux Arch Entwickl Mech Org. 1964 Mar;155(2):181-268 - PubMed
  4. Comp Biochem Physiol. 1968 Oct;27(1):139-44 - PubMed

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