Expression of an insect (Dendroides canadensis) antifreeze protein in Arabidopsis thaliana results in a decrease in plant freezing temperature

Expression of an insect (Dendroides canadensis) antifreeze protein in Arabidopsis thaliana... Transgenic Arabidopsis thaliana plants which express genes encoding insect, Dendroides canadensis, antifreeze proteins (AFP) were produced by Agrobacterium-mediated transformation. The antifreeze protein genes, both with and without the signal peptide sequence (for protein secretion), were expressed in transformed plants. Thermal hysteresis activity (indicating the presence of active AFPs) was present in protein extracts from plants expressing both proteins and was also detected in leaf apoplast fluid from plants expressing AFPs with the signal peptide. Transgenic lines did not demonstrate improved ability to survive freezing when compared to wild-type. However, when cooled under four different regimes, transgenic lines with AFPs in the apoplast fluid froze at significantly lower temperatures than did wild-type, especially in the absence of extrinsic nucleation events. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Expression of an insect (Dendroides canadensis) antifreeze protein in Arabidopsis thaliana results in a decrease in plant freezing temperature

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2002 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1019875922535
Publisher site
See Article on Publisher Site

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