Pn-AMPs, the hevein-like proteins from Pharbitis nil confers disease resistance against phytopathogenic fungi in tomato, Lycopersicum esculentum

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Title
Pn-AMPs, the hevein-like proteins from Pharbitis nil confers disease resistance against phytopathogenic fungi in tomato, Lycopersicum esculentum
Author(s)
Ok Sun Lee; B Y Lee; N M Park; J C Koo; Y H Kim; T Prasad D; C Karigar; H J Chun; B R Jeong; D H Kim; J S Nam; J G Yun; Sang Soo Kwak; M J Cho; D J Yun
Bibliographic Citation
Phytochemistry, vol. 62, no. 7, pp. 1073-1079
Publication Year
2003
Abstract
The antifungal activity of hevein-like proteins has been associated with their chitin-binding activities. Pn-AMP1 and Pn-AMP2, two hevein homologues from Pharbitis nil, show in vitro antifungal activities against both chitin and non-chitin containing fungi. Purified Pn-AMPs retained antifungal activities only under non-reducing conditions. When Pn-AMP2 cDNA was constitutively expressed in tomato (Lycopersicon esculentum) plants under the control of CaMV35S promoter, the transgenic plants showed enhanced resistance against both the non-chitinous fungus Phytophthora capsici, and the chitin-containing fungus Fusarium oxysporum. Thus, the chitin component in the fungal cell wall is not an absolute requirement for Pn-AMP's antifungal activities. These results when considered together suggest that Pn-AMPs have the potential for developing transgenic plants resistant to a wide range of phytopathogenic fungi.
Keyword
Antifungal activityConvolvulaceaeFungal resistanceHevein-like proteinsLycopersicon esculentumPharbitis nilPn-AMPSolanaceae
ISSN
0031-9422
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/S0031-9422(02)00668-4
Type
Article
Appears in Collections:
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
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