Expression of lily chloroplastic Cu, Zn superoxide dismutase enhances resistance to Erwinia carotovora in potatoes

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Title
Expression of lily chloroplastic Cu, Zn superoxide dismutase enhances resistance to Erwinia carotovora in potatoes
Author(s)
Mi Sun Kim; Hyun Soon Kim; Yoon Sik Kim; K H Baek; Jae Sun Moon; D Choi; Hyouk Joung; Jae Heung Jeon
Bibliographic Citation
Plant Pathology Journal, vol. 23, no. 4, pp. 300-307
Publication Year
2007
Abstract
Previously, a chloroplast-localized Cu,Zn superoxide dismutase (chCu,ZnSOD) was isolated from lily and the sense- and antisense- sequences of the lily chCu,ZnSOD were used to transform potato plants. Two selected lines, the sense- and anti-sense strand of transgenic plants, were further characterized for resistance to Erwinia carotovora, which is a severe pathogen affecting potato plants. Only the sense-strand transgenic potato, which contained less O2- and more H2O2 than wild-type and antisense-strand transgenic plants, showed increased resistance to E. carotovora. Additional studies using O2-or H2O2 scavengers in wild-type, sense-strand, and antisense-strand transgenic plants suggest that resistance to E. carotovora is induced by reduced O2-. and is not influenced by H2O2. To the best of our knowledge, this report is the first study suggesting that resistance to E. carotovora is enhanced by reduced O2-, and not by increased amounts of H2O2.
Keyword
erwiniapotatoresistanceSODsuperoxide anion
ISSN
I000-0113
Publisher
Korea Soc-Assoc-Inst
DOI
http://dx.doi.org/10.5423/PPJ.2007.23.4.300
Type
Article
Appears in Collections:
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
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