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Pn-AMPs, the hevein-like proteins from Pharbitis nil confers disease resistance against phytopathogenic fungi in tomato, Lycopersicum esculentum
- Authors
- Sun, Lee O.; Lee, B.; Park, N.; Koo, J.C.; Kim, Y.H.; Prasad, D T.; Karigar, C.; Chun, H.J.; Jeong, B.R.; Kim, D.H.; Nam, J.; Yun, J.-G.; Kwak, S.-S.; Cho, M.J.; Yun, D.-J.
- Issue Date
- 2003
- Keywords
- Antifungal activity; Convolvulaceae; Fungal resistance; Hevein-like proteins; Lycopersicon esculentum; Pharbitis nil; Pn-AMP; Solanaceae
- Citation
- Phytochemistry, v.62, no.7, pp 1073 - 1079
- Pages
- 7
- Indexed
- SCOPUS
- Journal Title
- Phytochemistry
- Volume
- 62
- Number
- 7
- Start Page
- 1073
- End Page
- 1079
- ISSN
- 0031-9422
- 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. ? 2003 Elsevier Science Ltd. All rights reserved.
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