KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)
- Volume 46 Issue 1
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- Pages.22-28
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- 2001
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- 0252-9777(pISSN)
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- 2287-8432(eISSN)
Enzyme Activities and Compounds Related to Self-Defense in UV-Challenged Leaves of Rice
- Kim, Hak-Yoon (Department of Agronomy, Kyungpook National University) ;
- Shin, Dong-Hyun (Department of Agronomy, Kyungpook National University) ;
- Sohn, Dae-Seung (Department of Agronomy, Kyungpook National University) ;
- Lee, In-Jung (Department of Agronomy, Kyungpook National University) ;
- Kim, Kil-Ung (Department of Agronomy, Kyungpook National University) ;
- Lee, Sang-Chul (Department of Agronomy, Kyungpook National University) ;
- Jeong, Hyung-Jin (School of Bioresource Science, Andng National University) ;
- Cho, Moon-Soo (Department of Horticulture, Taegu University)
- Published : 2001.03.01
Abstract
The induction of enzymes and the accumulation of their end products associated with self-defense mechanism in rice were investigated. When rice leaves were irradiated with UV light, activities of diterpene cyclase, phenylalanine ammonia-lyase (PAL), and cinnamic acid 4-hydroxylase (CA4H) were induced and rice phytoalexin, momilactone A was accumulated. The content of p-coumaric acid in rice leaves was closely correlated with self-defense or allelopathic potential against barnyardgrass. UV-challenged rice leaves gave rise to the inhibition of barnyardgrass growth.