Relations Between Metabolism and Morphogenesis During Regeneration in Tubifex Tubifex. Ii

ANDERSON, JANE COLLIER

doi:10.2307/1539010

Cited by 9 publications

(2 citation statements)

References 12 publications

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“…The relationship between morphogenetic changes during regeneration and the metabolic processes involved in tissue reconstitution have received attention from Anderson (see Collier, 1947 ; Anderson, 1956). Tubtfex tuhifex was found to respire at a rate of 0-16 ml/g wet wt.…”

Section: Metabolism In Regenerationmentioning

confidence: 99%

The physiology of earthworms

Laverack¹

1963

119

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1956; Watson, 1958), but there is at least one important diflference compared with vertebrate collagen : there is no periodicity of the fibrils at 640 A intervals in either L. terrestrts (Watson and Silvester, 1959), or A. longa (Reed and Rudall, 1948) (Fig. 5). The cuticle is highly proteinaceous in character, some 80% of the total being composed of protein whilst the remaining 20% is made up of polysaccharides, galactose, pentoses and hexosamines (Watson, 1958). Nitrogen accounts for 14-6% of the cuticle weight and at least 16 amino-acids are represented in the protein. The amino-acids of the cuticle of two species, L. terrestrts and A. longa are Hsted in Table 3 where they are compared with a typical vertebrate collagen, that of ox-hide (Watson and Smith, 1956; Watson, 1958; and Singleton, 1957). Amines with non-polar side chains e.g. glycine, are present in quantities similar to those in vertebrate collagen, but arginine, histidine, and lysine with basic side chains are less abundant than in vertebrate material, whilst aspartic acid, glutamic acid and serine (D-serine?) with acidic side chains are present in greater quantities than in the vertebrate counterpart. There is no trace of hydroxylysine in earthworm cuticle. The gizzard of L. terrestrts is lined with a cuticle. This can be removed and Rudall (1955) subjected this material to X-ray analysis, obtaining patterns similar to those of chaetae (see p. 15). Cuticle from this situation is not stable in hot dilute alkali, does not crystallize, and though chitin-like is not in the a-chitin form. The presence of a chitin would be shown by a fibrillar structure, but van Gansen (1959b, 1960) using similar material finds no evidence for the belief that the gizzard lining is fibrillar. Chemical tests with orcein, resorcin, van Gieson stain, benzidine and Gomori stain

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Section: Metabolism In Regenerationmentioning

confidence: 99%

The physiology of earthworms

Laverack¹

1963

119

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“…1951;Walker, 1955). Anderson (1956) found that exposure to one atmosphere oxygen pressure for ten days is lethal to T. tubifc.r and also inhibits regeneration ; 10~ 5 M cyanide stimulates some phases of regeneration. When regenerating worms are exposed to one atmosphere oxygen pressure in the presence of cyanide, survival is enhanced and the inhibition of regeneration by oxygen is partially reversed (Anderson, 1956V The blood of T. tubife.v contains hemoglobin in solution which lias an extremely high affinity for oxygen (Fox, 1945).…”

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confidence: 99%