Involvement of proteasome-ubiquitin system in wound-signaling in tobacco [Nicotiana tabacum] plants

Treatment of wounded tobacco leaves with a proteasome-specific inhibitor lactacystin resulted in: (1) enhanced expression of proteasome subunit genes, (2) suppressed expression of proteasome activity, (3) induced accumulation of Ub-conjugated proteins, and (4) suppressed expression of wound-inducibl...

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Published inPlant and cell physiology Vol. 40; no. 3; pp. 355 - 360
Main Authors Ito, N. (National Inst. of Agrobiological Resources, Tsukuba, Ibaraki (Japan)), Seo, S, Ohtsubo, N, Nakagawa, H, Ohashi, Y
Format Journal Article
LanguageEnglish
Published Oxford University Press 1999
Subjects
Basic PR genes
biochemical pathways
enzyme activity
ENZYME INHIBITORS
FEUILLE
FISIOLOGIA VEGETAL
GENE
gene expression
GENES
genetic regulation
HERIDAS
HOJAS
INHIBIDORES DE ENZIMAS
INHIBITEUR D'ENZYME
inhibitors
Lactacystin
LEAVES
mechanical damage
messenger RNA
NICOTIANA TABACUM
pathogenesis-related proteins
PHYSIOLOGIE VEGETALE
PLAIE
plant extracts
PLANT PHYSIOLOGY
Proteasome
proteinases
Tobacco (Nicotiana tabacum)
Ubiquitin
Wound-signaling
WOUNDS
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Summary:Treatment of wounded tobacco leaves with a proteasome-specific inhibitor lactacystin resulted in: (1) enhanced expression of proteasome subunit genes, (2) suppressed expression of proteasome activity, (3) induced accumulation of Ub-conjugated proteins, and (4) suppressed expression of wound-inducible genes, indicating that the Ub-proteasome system is involved in wound-signaling in plants.
Bibliography:F60
1999003802
istex:4F0C6CB6869731741AD5E4C6D98B3BF426C89E7C
ArticleID:40.3.355
ark:/67375/HXZ-L7NZP5WF-J
3 Present address: Department of Plant Breeding, National Agriculture Research Center, 3-1-1 Kannondai, Tsukuba, Ibaraki, 305-8666 Japan.
ISSN:0032-0781
1471-9053
DOI:10.1093/oxfordjournals.pcp.a029550