## Abstract Changes in chemical composition, water content, respiration, and ability to survive rapid dehydration in dry air were studied in nematodes, __Aphelenchus avenae__, recovering from anhydrobiosis, in water. Water content rises rapidly, from about 0.02 mg H~2~O/mg dry weight to 2.0 mg/mg a
Anhydrobiosis in nematodes: Permeability during rehydration
β Scribed by Crowe, John H. ;O'Dell, Steven J. ;Armstrong, David A.
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 479 KB
- Volume
- 207
- Category
- Article
- ISSN
- 0022-104X
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β¦ Synopsis
Abstract
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Inorganic ions and primary amines are leaked from anhydrobiotic and quickβdried nematodes, Aphelenchus avenae, when they are plunged from dry air into water.
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Anhydrobiotic nematodes leak about oneβthird as fast as quickβdried ones.
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When the water content is increased above about 20% by exposing the animals to moist air before immersing them in water, the leakage rate in both anhydrobiotic and quickβdried worms is diminished.
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The rate of leakage is inversely correlated with the glycerol contents of the worms at the time they are placed in water.
π SIMILAR VOLUMES
## Abstract 1. Changes in the chemical composition of pellets of the nematode __Aphelenchus avenae__ were studied as the worms experienced evaporative water loss during 72 hours at 97% RH. 2. Lipid content declines rapidly during the first 24 hours, and decreases to about 60% of the original by th
## Abstract The pathway for the synthesis of trehalose in __Aphelenchus avenae__ was demonstrated. As in other systems, the enzymes involved in the synthesis of trehalose of __A. avenae__ were found to be trehalose phosphate synthetase (TPS) and trehalosephosphate phosphatase (TPP). Some of the cha
## Abstract Control of the synthesis of trehalose during the induction of anhydrobiosis was examined. Kinetic parameters for TPS did not change during the induction, indicating that there was no de novo synthesis of an isozyme. TPS activity doubled in the presence of a mixture of Na^+^, K^+^, Mg^++
## Abstract Nematodes, __Aphelenchus avenae__, can be induced to become anhydrobiotic by drying in aggregates (pellets) (>90 mg wet weight) at 97% relative humidity (RH). When the rate of weight loss exceeds 3% hr^β1^ survival is low. The number of animals in a pellet that survive exposure to dry
During induction of anhydrobiosis the nematode Aphelenchus avenue synthesizes large quantities of trehalose and free glycerol t h e carbon for which apparently originates from lipid. In the present paper we show that these worms possess a functional glyoxylate cycle by which lipid is converted to ca