The phenylalanine pathway is the main route of salicylic acid biosynthesis in Tobacco mosaic virus-infected tobacco leaves
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概要
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In plants, salicylic acid (SA), a molecule important for resistance to pathogens, is synthesized from phenylalanine or isochorismate. Although SA is reportedly synthesized via the isochorismate pathway in pathogen-infected Arabidopsis, the predominant pathway in pathogen-infected tobacco has not been known. To determine the pathway in tobacco, we studied the gene expression and enzyme activity of phenylalanine ammonia-lyase (PAL) and isochorismate synthase (ICS) in tobacco leaves infected with Tobacco mosaic virus (TMV). Two days after TMV inoculation, necrotic lesions had appeared, and the levels of SA, PAL activity, and transcripts of PAL A and PAL B had increased substantially. In contrast, no ICS activity was detected, and the levels of ICS transcript did not increase, after the formation of necrotic lesions caused by TMV infection. These results suggest that SA is synthesized mainly by the phenylalanine pathway in TMV-infected and necrotic-lesion-bearing tobacco leaves.
- 日本植物細胞分子生物学会の論文
- 2006-09-01
著者
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Ogawa Daisuke
Graduate School Of Life And Environmental Sciences University Of Tsukuba
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Seo S
Plant-microbe Interaction Research National Institute Of Agrobiological Sciences
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Mitsuhara I
Plant-microbe Interaction Research National Institute Of Agrobiological Sciences
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KAMADA Hiroshi
Graduate School of Life and Environmental Sciences, University of Tsukuba
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Ogawa D
Department Of Medicine Iii Okayama University Medical School
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NAKAJIMA Nobuyoshi
Biodiversity Conservation Research Project, National Institute for Environmental Studies
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Nakajima N
National Inst. For Environmental Studies Ibaraki Jpn
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SHIRASAWA SEO
Miyagi Prefectural Agriculture and Horticulture Research Center
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SEO Naomi
Miyagi Prefectural Agricultural Research Center
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SHIRASAWA Naomi
Miyagi Prefectural Agricultural Research Center
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SEO Shigemi
Plant Physiology Department, National Institute of Agrobiological Sciences
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MITSUHARA Ichiro
Plant Physiology Department, National Institute of Agrobiological Sciences
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OHASHI Yuko
Plant Physiology Department, National Institute of Agrobiological Sciences
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Kamada Hiroshi
Graduate School Of Life And Environmental Sciences University Of Tsukuba
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Ogawa Daisuke
Department Of Medicine And Clinical Science (internal Medicine Iii) Okayama University Graduate Scho
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Ohashi Yuko
Plant-microbe Interaction Research National Institute Of Agrobiological Sciences
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Nakajima Nobuyoshi
Biodiversity Conservation Research Project National Institute For Environmental Studies
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Seo Shigemi
Department Of Plant Physiology National Institute Of Agrobiological Sciences
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Ohashi Y
Department Of Molecular Genetics National Institute Of Agrobiological Resources
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Nakajima N
National Inst. Environmental Studies Ibaraki Jpn
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Mitsuhara I
National Inst. Of Agrobiological Sci. Ibaraki Jpn
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Mitsuhara Ichiro
National Institute Of Agrobiological Resources
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Kamata Hiroshi
Dept. Biosci. Tsukuba Univ.
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Mitsuhara Ichiro
Plant Physiol. Dept. National Institute Of Agrobiological Sciences
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Ohashi Yuko
Plant Physiol. Dept. National Institute Of Agrobiological Sciences
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Kamada Hiroshi
Graduate School Of Life And Environmental Sciences Gene Research Center University Of Tsukuba
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OHASHI Yuko
Plant-Microbe Interactions Research Unit, National Institute of Agrobiological Sciences
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KAMADA Hiroshi
Master's Program in Biosystem Studies, University of Tsukuba
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SEO Shigemi
Plant Physiol. Dept., National Institute of Agrobiological Sciences
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