一种能在细胞内结冰情况下存活的南极线虫的耐寒性：与其他线虫物种的比较。
Cold tolerance of an Antarctic nematode that survives intracellular freezing: comparisons with other nematode species.
作者信息
Smith T, Wharton D A, Marshall C J
机构信息
Department of Zoology, University of Otago, Dunedin, New Zealand.
出版信息
J Comp Physiol B. 2008 Jan;178(1):93-100. doi: 10.1007/s00360-007-0202-3. Epub 2007 Aug 22.
Panagrolaimus davidi is an Antarctic nematode with very high levels of cold tolerance. Its survival was compared with that of some other nematodes (P. rigidus, Rhabditophanes sp., Steinernema carpocapsae, Panagrellus redivivus and Ditylenchus dipsaci) in both unacclimated samples and those acclimated at 5 degrees C. Levels of recrystallization inhibition in homogenates were also compared, using the splat-cooling assay. The survival of P. davidi after the freezing of samples was notably higher than that of the other species tested, suggesting that its survival ability is atypical compared to other nematodes. In general, acclimation improved survival. Levels of recrystallization inhibition were not associated with survival but such a relationship may exist for those species that are freezing tolerant.
大卫泛裸囊线虫是一种具有极高耐寒性的南极线虫。在未适应环境的样本以及在5摄氏度下适应环境的样本中，将其存活率与其他一些线虫（硬泛裸囊线虫、似小杆线虫属、小卷蛾斯氏线虫、复苏滑刃线虫和茎线虫）的存活率进行了比较。还使用骤冷试验比较了匀浆中重结晶抑制水平。样本冷冻后，大卫泛裸囊线虫的存活率显著高于其他受试物种，这表明与其他线虫相比，其生存能力具有非典型性。一般来说，适应环境可提高存活率。重结晶抑制水平与存活率无关，但对于那些耐冻的物种可能存在这种关系。
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