Frost is especially damaging to perennial fruit crops in the spring because flower parts are sensitive to freezing injury and to tender transplants.
The big unknown for the United States is how sensitive to freezing the tropical and subtropical flatworm will be.
G. turuturu was shown to be more sensitive to freezing treatment (− 20 °C), which explained why the appearance of G. turuturu was rarely reported in colder water environments.
However, spermatozoa from some strains, including C57BL/6 (B6), are very sensitive to freezing and thawing and frequently fail to fertilize eggs by conventional in vitro fertilization methods at the recipient mouse facility.
Here, we demonstrate that the cca1-11 and particularly the cca1-11/lhy-21 morentsensitivere sensitove to freezing and were less able to cold acclimate in comparison to wild-type plants (Figure 10).
Also despite their repression by cold treatment, a loss-of-function mutant in one of these enzymes (CHY1) was recently shown to be more sensitive to freezing following cold acclimation [64].
When plants were cold-acclimated prior to the freezing treatment, the majority (92%) of wild-type plants became tolerant to the freezing temperature; in comparison, 74% of the lov1-4 plalso also became tolerant to the freezing treatment, suggesting that lov1-4 plaresensitivesitove to freezing temperatures but are able to acclimate to the cold.
Human oocytes are particularly sensitive to freezing, and rates of post-thaw survival were unacceptably low for many years.
Conversely, sensitive to freezing 4 (sfr4) mutants exhibited an impaired freezing tolerance response due to a reduced accumulation of sugar levels at low temperature relative to the wild type [ 39, 40].
The sfr4 mutant is highly sensitive to freezing temperatures as compared to wild-type plants, due to a low sugar content, which leads to a loss of osmotic responsiveness [ 40].
Next to differences in laboratory methods also sample handling influences the serum OC concentration, as it is sensitive to freeze-thaw cycles and haemolysis [ 25].
