Ectopic expression of pepper CaPF1 in potato enhances multiple stresses tolerance and delays initiation of in vitro tuberization

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Title
Ectopic expression of pepper CaPF1 in potato enhances multiple stresses tolerance and delays initiation of in vitro tuberization
Author(s)
Jung Won Youm; Jae Heung Jeon; D Choi; S Y Yi; Hyouk Joung; Hyun Soon Kim
Bibliographic Citation
Planta, vol. 228, no. 4, pp. 701-708
Publication Year
2008
Abstract
Ethylene-responsive factors (ERFs) are plant-specific transcription factors, many of which have been linked to plant defense responses. However, little is known about the functional significance of ERF genes in potato plants compared to the model plant species Arabidopsis. We show here that overexpression of CaPF1, an ERF/AP2-type pepper transcription factor gene, effectively increased tolerance to freezing, heat, heavy metal, and oxidative stress in potatoes. Interestingly, CaPF1 was involved in tuber formation in potato plants. The time course of microtuber formation was significantly retarded in potato plants that overexpressed CaPF1 compared with wild-type potato plants. Overall, the results of the present study indicate that the pepper transcription factor gene, CaPF1, is involved in promotion of multiple stress tolerance and retardation of in vitro tuberization in potato plants.
Keyword
Freezing toleranceHeat toleranceHeavy metalIn vitro tuberizationOxidative stress
ISSN
0032-0935
Publisher
Springer
DOI
http://dx.doi.org/10.1007/s00425-008-0782-5
Type
Article
Appears in Collections:
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
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