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language
eng
Author
Kumura, Yumiko
Description
Rice cultivar Sekiguchi-asahi was identified as a lesion mimic mutant derived from cv. Asahi. Sekiguchi-asahi showed light-enhanced resistance to Bipolaris oryzae infection inducing the formation of Sekiguchi lesions and tryptamine accumulation. No sporulation was observed on the Sekiguchi lesions. Furthermore, significant DNA fragmentation was observed in leaves with Sekiguchi lesions after inoculation with B. oryzae under light, as compared with brown spot lesions in the dark. However, pretreatment with 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) suppressed the formation of Sekiguchi lesions, tryptamine accumulation, and DNA fragmentation in Sekiguchi-asahi even under light. Light-induced resistance of rice against B. oryzae is supported by tryptamine with antifungal activity, and increased DNA fragmentation might contribute to enhance the accumulation of tryptamine involved in inhibition of pathogen development such as sporulation.
Journal Title
島根大学生物資源科学部研究報告
Volume
14
Start Page
3
End Page
8
ISSN
13433644
Published Date
2009-09-30
NCID
AA1112906X
Publisher
島根大学生物資源科学部
Publisher Aalternative
Shimane University, Faculty of Life and Environmental Science
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
Remark
1-12+ / 1996-2007
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