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Ice-active proteins from New Zealand snow tussocks, Chionochloa macra AND C. rigida
D A Wharton1, L Selvanesan, C J Marshall
1Department of Zoology, University of Otago, P.O. Box 56, Dunedin, New Zealand. david.wharton@stonebow.otago.ac.nz
Abstract:
The ice active protein profile of New Zealand snow tussocks Chionochloa macra and C. rigida consisted of ice nucleation activity but no antifreeze or recrystallization inhibition activity. The ice nucleation activity was similar in the two species, despite them being collected at different altitudes and at different times. The activity is intrinsic to the plant and is associated with the surface of the leaves. Snow tussocks collect water from fog. Nucleation sites on the surface of their leaves may aid the efficiency of this process.
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