Metabolism of Glycogen and Neutral Lipids by Aphelenchus avenae and Caenorhabditis sp. in Aerobic, Microaerobic and Anaerobic Environments
Abstract
Starving Aphelenchus avenae survived 3-4 weeks in microaerobic and anaerobic environments, but Caenorhabditis sp. survived less than 80 hr. Aerobically, both nematodes metabolize neutral lipid reserves: there was no microaerobic ( 5% O[sub2]) or anaerobic neutral lipid catabolism. Early in anaerobiosis both nematodes utilized endogenous glycogen. Caenorhabditis sp. depleted the glycogen and died. A. avenae under oxygen stress longer than 120 hr entered cryptobiosis, during which there was neither measurable O[sub2] uptake nor glycogen or neutral lipid utilization, Only when re-aerated, did A. avenae recover and resume "'normal" metabolism. Key Words: Aeration, Glycogen metabolism, Neutral lipid catabolism, Aphelenchus avenae, Caenorhabditis sp., Cryptobiosis.Downloads
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