Sulfonylurea-resistant biotypes of Monochoria vaginalis generate higher ultraweak photon emissions than the susceptible ones |
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| Authors: | Hidehiro Inagaki Toshiyuki Imaizumi Guang-Xi Wang Tohru Tominaga Kimihiko Kato Hiroyuki Iyozumi Hideki Nukui |
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| Institution: | aShizuoka Prefectural Research Institute of Agriculture and Forestry, Shizuoka 438-0803, Japan;bGraduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan |
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| Abstract: | All living organisms spontaneously generate ultraweak photon emissions, which originate from biochemical reactions in cells. Current research uses the ultraweak photon emission from organisms as a novel indicator in nondestructive analyses of an organisms living state. This study indicates that ultraweak photon emissions from Monochoria vaginalis are different between resistant biotypes (R) to sulfonylurea (SU) and susceptible biotypes (S). In SU-R biotypes, distinct increases in photon emissions were observed, but there was little increase in SU-S biotypes. In addition, photon emissions from the resistant biotypes of M. vaginalis were suppressed by treatment with P450 inhibitors. This suggests that cytochrome P450 monooxygenase, which plays a crucial role in the metabolic detoxification of SUs, could be associated with the generation of ultraweak photon emissions. Ultraweak photon emissions have a potential use in a novel diagnosis system as an indicator in a nondestructive testing of weeds resistant to SUs. |
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| Keywords: | Cytochrome P450 monooxygenase Herbicide resistance Monochoria vaginalis Photon counter Sulfonylurea Ultraweak photon emission |
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