Analysis of morphogenetic mutants of hydra - II. The non-budding mutant
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Analysis of morphogenetic mutants of hydra - II. The non-budding mutant. / Schaller, H. C.; Schmidt, T.; Flick, K.; Grimmelikhuijzen, C. J.P.
I: Wilhelm Roux's Archives of Developmental Biology, Bind 183, Nr. 3, 09.1977, s. 207-214.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Analysis of morphogenetic mutants of hydra - II. The non-budding mutant
AU - Schaller, H. C.
AU - Schmidt, T.
AU - Flick, K.
AU - Grimmelikhuijzen, C. J.P.
PY - 1977/9
Y1 - 1977/9
N2 - Non-budding mutants of Chlorohydra viridissima regenerate heads 6 h faster than Hydra attenuata and the number of tentacles per head is higher. The polarity in pieces from the gastric region is the more labile, the smaller the pieces are. In regenerates heads and tentacles form much more frequently than feet, giving rise to bipolar or multiheaded structures. Buds very seldom form under normal conditions, but they occasionally occur in regenerating animals with two cut surfaces. The higher head-forming potential in the mutant is paralleled by a higher head-activator concentration (20-fold in head, 4-fold in body), than in Hydra attenuata, which is not accompanied by an equivalent increase in head-inhibitor concentration (1.4-fold in head, 2-fold in body). The foot-activator concentration is slightly reduced (1.3-fold), the foot-inhibitor concentration is higher (1.6-fold) than in H. attenuata. The mutant is extremely insensitive to head activator, relatively insensitive to head inhibitor and foot inhibitor, but sensitive to foot activator.
AB - Non-budding mutants of Chlorohydra viridissima regenerate heads 6 h faster than Hydra attenuata and the number of tentacles per head is higher. The polarity in pieces from the gastric region is the more labile, the smaller the pieces are. In regenerates heads and tentacles form much more frequently than feet, giving rise to bipolar or multiheaded structures. Buds very seldom form under normal conditions, but they occasionally occur in regenerating animals with two cut surfaces. The higher head-forming potential in the mutant is paralleled by a higher head-activator concentration (20-fold in head, 4-fold in body), than in Hydra attenuata, which is not accompanied by an equivalent increase in head-inhibitor concentration (1.4-fold in head, 2-fold in body). The foot-activator concentration is slightly reduced (1.3-fold), the foot-inhibitor concentration is higher (1.6-fold) than in H. attenuata. The mutant is extremely insensitive to head activator, relatively insensitive to head inhibitor and foot inhibitor, but sensitive to foot activator.
KW - Bud formation
KW - Hydra mutant
KW - Morphogenetic substances
UR - http://www.scopus.com/inward/record.url?scp=0017715633&partnerID=8YFLogxK
U2 - 10.1007/BF00867321
DO - 10.1007/BF00867321
M3 - Journal article
AN - SCOPUS:0017715633
VL - 183
SP - 207
EP - 214
JO - Development Genes and Evolution
JF - Development Genes and Evolution
SN - 0949-944X
IS - 3
ER -
ID: 370741677