TY - JOUR
T1 - Antifreeze proteins in overwintering plants
T2 - A tale of two activities
AU - Griffith, Marilyn
AU - Yaish, Mahmoud W.F.
N1 - Funding Information:
We thank Maja Stressmann and André Peters, University of Waterloo, and Alejandra M. Regand and Alejandro G. Marangoni, University of Guelph, for assistance with Figure 2 . Our work is supported by the Natural Science and Engineering Research Council of Canada. M.G. is a Killam Research Fellow.
PY - 2004/8
Y1 - 2004/8
N2 - Antifreeze proteins are found in a wide range of overwintering plants where they inhibit the growth and recrystallization of ice that forms in intercellular spaces. Unlike antifreeze proteins found in fish and insects, plant antifreeze proteins have multiple, hydrophilic ice-binding domains. Surprisingly, antifreeze proteins from plants are homologous to pathogenesis-related proteins and also provide protection against psychrophilic pathogens. In winter rye (Secale cereale), antifreeze proteins accumulate in response to cold, short daylength, dehydration and ethylene, but not pathogens. Transferring single genes encoding antifreeze proteins to freezing-sensitive plants lowered their freezing temperatures by ∼1°C. Genes encoding dual-function plant antifreeze proteins are excellent models for use in evolutionary studies to determine how genes acquire new expression patterns and how proteins acquire new activities.
AB - Antifreeze proteins are found in a wide range of overwintering plants where they inhibit the growth and recrystallization of ice that forms in intercellular spaces. Unlike antifreeze proteins found in fish and insects, plant antifreeze proteins have multiple, hydrophilic ice-binding domains. Surprisingly, antifreeze proteins from plants are homologous to pathogenesis-related proteins and also provide protection against psychrophilic pathogens. In winter rye (Secale cereale), antifreeze proteins accumulate in response to cold, short daylength, dehydration and ethylene, but not pathogens. Transferring single genes encoding antifreeze proteins to freezing-sensitive plants lowered their freezing temperatures by ∼1°C. Genes encoding dual-function plant antifreeze proteins are excellent models for use in evolutionary studies to determine how genes acquire new expression patterns and how proteins acquire new activities.
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U2 - 10.1016/j.tplants.2004.06.007
DO - 10.1016/j.tplants.2004.06.007
M3 - Review article
C2 - 15358271
AN - SCOPUS:4344568284
SN - 1360-1385
VL - 9
SP - 399
EP - 405
JO - Trends in Plant Science
JF - Trends in Plant Science
IS - 8
ER -