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耐冻南极线虫大卫拟丽突线虫(Panagrolaimus davidi)和高山沙螽毛利半翅沙螽(Hemideina maori,直翅目;沙螽科)中的重结晶现象。

Recrystallization in a freezing tolerant Antarctic nematode, Panagrolaimus davidi, and an alpine weta, Hemideina maori (Orthoptera; Stenopelmatidae).

作者信息

Ramløv H, Wharton D A, Wilson P W

机构信息

Roskilde University Center, Institute of Biology and Chemistry, Denmark.

出版信息

Cryobiology. 1996 Dec;33(6):607-13. doi: 10.1006/cryo.1996.0064.

DOI:10.1006/cryo.1996.0064
PMID:8975688
Abstract

The ability of haemolymph from the freezing tolerant weta, Hemideina maori, and supernatant from homogenates of the freezing tolerant nematode Panagrolaimus davidi to inhibit the recrystallization of ice was examined using the "splat freezing" technique and annealing on a cryomicroscope stage. There was no recrystallization inhibition in weta haemolymph or in insect ringer controls. Recrystallization inhibition was present in the nematode supernatant but this was destroyed by heating and was absent in controls. P. davidi survives intracellular freezing and recrystallization inhibition may be important for the survival of this stress.

摘要

利用“溅冻”技术并在低温显微镜载物台上进行退火处理,研究了耐寒沙螽(毛利半翅沙螽)血淋巴以及耐寒线虫(大卫食菌线虫)匀浆上清液抑制冰重结晶的能力。沙螽血淋巴或昆虫林格氏液对照中均未出现重结晶抑制现象。线虫上清液中存在重结晶抑制作用,但加热后这种作用被破坏,且对照中不存在该现象。大卫食菌线虫能在细胞内结冰的情况下存活,重结晶抑制作用对于这种应激状态下的生存可能很重要。

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