The formation of intracellular ice of cells can cause severe cellular damage leading to many problems in cryopreservation. The broad bean was used as the research object
and the cytoskeleton was dissolved by cytochalasin B
and the freezing experiment was carried out at different cooling rates using a low temperature microscopic system. The experimental results show that the cells treated with cytochalasin B have higher crystallization temperature and shorter crystallization time during the freezing process
but the cytoskeleton has little effect on the growth process of intracellular ice. The external conditions play a key role
and the inoculation of ice crystals affects the formation temperature of ice crystals in the cells and the growth rate of ice crystals. Finally
the degree of damage to the cells was analyzed by light intensity map. It was found that the growth process of intracellular ice without cytoskeleton was similar to that of normal cells
but the crystallization rate was different
indicating that the cytoskeleton inside the cells affected the initiation of intracellular ice. Therefore
keeping the cytoskeleton intact before cryopreserving the plant sample can reduce the formation of intracellular ice and maintain cell morphology after rewarming.
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references
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