Biosynthetic correlation of various phytoalexins in sweet potato root tissue infected by Ceratocystis fimbriata
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概要
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In sweet potato root tissue infected by Ceratocystis fimbriata, changes in a one hour-incorporation of radioactivities from 2-^<14>C-acetate into furano-terpene phytoalexins were examined during incubation. The data showed that radioactivities in the CHCl_3 fractions (containing lipid) were increased after 15 hr of incubation, and were found in furano-terpenes as visualized by the TLC radioautograms. Pulse and chase feeding of 2-^<14>C-acetate at low temperature was also performed using tissue discs incubated for 36 hr with the infected region. Changes in the radioactivities of the individual components were investigated with TLC. Several components such as OHDHMy were labeled rapidly, then followed a decrease in the label. These changes were accompanied by increases in the radioactivities of other components such as DHIp, Ip, IpOH and Component B_1. These results are further evidence for the hypothetical pathway that has been proposed previously, with some modifications.
- 日本植物生理学会の論文
著者
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Inoue Hiromasa
Laboratory Of Biochemistry Faculty Of Agriculture Nagoya University
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Uritani Ikuzo
Laboratory Of Biochemistry And Institute For Biochemical Regulation Faculty Of Agriculture Nagoya Un
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