Inhibition of the pathogenicity of Magnaporthe grisea by bromophenols, isocitrate lyase inhibitors, from the red alga Odonthalia corymbifera
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Title
- Inhibition of the pathogenicity of Magnaporthe grisea by bromophenols, isocitrate lyase inhibitors, from the red alga Odonthalia corymbifera
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Author(s)
- Lee, Hyi-Seung; Lee, Tae-Hoon; Lee, Ji Hye; Chae, Choong-Sik; Chung, Soon-Chun; Shin, Dong-Sun; Shin, Jongheon; Oho, Ki-Bong
- KIOST Author(s)
- Lee, Hyi Seung(이희승)
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Alternative Author(s)
- 이희승; 이지혜
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Publication Year
- 2007-08-22
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Abstract
- Magnaporthe grisea is a fungal pathogen of rice that forms appressoria that penetrate the outer cuticle of the rice plant. Data from recent studies indicate that M. grisea isocitrate lyase (ICL), a key enzyme in the glyoxylate cycle, is highly expressed during appressorium-mediated plant infection. Bromophenols isolated from the red alga Odonthalia corymbifera exhibited potent ICL inhibitory activity and blocked appressoria formation by M. grisea in a concentration-dependent manner. In addition, these compounds protected the rice plants from infection by M. grisea. Rice plants infected with wild-type M. grisea Guy 11 exhibited significantly lower disease severity with bromophenol treatment than without, and the treatment effect was comparable to the behavior of the Delta icl knockout mutant I-10. The protective effect of bromophenols and their strong inhibition of appressorium formation on rice plants suggest that ICL inhibitors may be promising candidates for crop protection, particularly to protect rice plants against M. grisea.
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ISSN
- 0021-8561
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/4648
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DOI
- 10.1021/jf071125r
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Bibliographic Citation
- JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, v.55, no.17, pp.6923 - 6928, 2007
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Publisher
- AMER CHEMICAL SOC
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Subject
- RHODOMELA-CONFERVOIDES; RICE-BLAST; MYCOBACTERIUM-TUBERCULOSIS; GLYOXYLATE CYCLE; SYMPHYOCLADIA-LATIUSCULA; MALATE SYNTHASE; VIRULENCE; REQUIRES; PENETRATION; DERIVATIVES
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Keywords
- Magnaporthe grisea; appressoria; infection; rice; disease symptom; isocitrate lyase inhibitor; Odonthalia corymbifera; bromophenols
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Type
- Article
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Language
- English
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Document Type
- Article
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