Non-budding Hydra: Form Regulation and Bud Induction
نویسندگان
چکیده
منابع مشابه
Budding in hydra : the role of cell multiplication and cell movement in bud initiation By GERALD
The work described in this paper is concerned with the role of cell multiplication and cell movement in relation to the initiation of buds in hydra. Hydra starved for 6 days do not initiate new buds; in such animals the mean mitotic index is only 10% of that in well-fed animals. When starved animals are re-fed, there is a rapid rise in mitotic index which reaches a maximum 12 h after feeding an...
متن کاملBudding in hydra: the role of cell multiplication and cell movement in bud initiation.
The work described in this paper is concerned with the role of cell multiplication and cell movement in relation to the initiation of buds in hydra. Hydra starved for 6 days do not initiate new buds; in such animals the mean mitotic index is only 10% of that in well-fed animals. When starved animals are re-fed, there is a rapid rise in mitotic index which reaches a maximum 12 h after feeding an...
متن کاملBudding in hydra : the role of cell multiplication and cell movement in bud initiation By GERALD WEBSTER
The work described in this paper is concerned with the role of cell multiplication and cell movement in relation to the initiation of buds in hydra. Hydra starved for 6 days do not initiate new buds; in such animals the mean mitotic index is only 10% of that in well-fed animals. When starved animals are re-fed, there is a rapid rise in mitotic index which reaches a maximum 12 h after feeding an...
متن کاملBud induction in decapitated Hydra attenuata by 5-azacytidine: a morphological study.
The effect of 5-azacytidine (5-azaCR) on head regeneration and budding in hydra are reported. Hydra attenuata were exposed to various doses of 5-azaCR for 48 h and then decapitated and cultured. Head regeneration and bud formation were observed for 12 days after decapitation. Untreated control hydra regenerated heads within 7 to 8 days of decapitation with a budding index of 0.2. Buds invariabl...
متن کاملIsolation and characterization of a low-molecular-weight substance activating head and bud formation in hydra.
From crude extracts of hydra, a substance activating head formation was isolated and enriched at least lOOOOO-fold. The molecular weight was determined to be approximately 900. Sensitivity against proteases suggests that it is a peptide. The substance acts at a concentration equivalent to the extract of 1 hydra per ml or at a concentration of less than 10 M. In its highly purified form the subs...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 1974
ISSN: 0003-1569
DOI: 10.1093/icb/14.2.603