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PMID: 14520568 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Lithium treatment induces a hypersensitive-like response in tobacco.

Planta ·Vol. 217 ·No. 3 ·2003-07-00 ·Pages 417-24

Naranjo MA, Romero C, Bellés JM, Montesinos C, Vicente O, Serrano R

Abstract

Treatment of tobacco ( Nicotiana tabacum L.) plants with lithium induces the formation of necrotic lesions and leaf curling as in the case of incompatible pathogen interactions. Further similarities at the molecular level include accumulation of ethylene and of salicylic and gentisic acids, and induced expression of pathogenesis-related PR-P, PR5 and PR1 genes. With the exception of PR1 induction, lithium produced the same effects in transgenic tobacco plants that do not accumulate salicylate because of overexpression of the bacterial hydroxylase gene nahG. On the other hand, inhibition of ethylene biosynthesis with aminoethoxyvinylglycine prevented lithium-induced cell death and PR5 expression. These results suggest that lithium triggers a hypersensitive-like response where ethylene signalling is essential.

MeSH Terms
Apoptosis/drug effects Ethylenes/metabolism Gentisates/metabolism Lithium/pharmacology Plant Leaves/drug effects,genetics,metabolism Plant Proteins/genetics,metabolism Salicylic Acid/metabolism Tobacco/drug effects,genetics,metabolism
Chemicals
Ethylenes Gentisates Plant Proteins pathogenesis-related proteins, plant ethylene Lithium Salicylic Acid 2,5-dihydroxybenzoic acid
Authors & Affiliations
6 authors, click to expand affiliations / ORCID
Naranjo Miguel A
Instituto de Biología Molecular y Celular de Plantas, Universidad Politécnica de Valencia-C.S.I.C., Camino de Vera s/n, 46022 Valencia, Spain.
Romero Carlos
Bellés José M
Montesinos Consuelo
Vicente Oscar
Serrano Ramón
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Article Info
Journal
Planta
Abbr.
Planta
ISSN
0032-0935
DOI
10.1007/s00425-003-1017-4
Published
2003-07-00
Epub
2003-00-21
Pages
417-24
Language
English
Region
Germany
NLM ID
1250576
Subset
IM
External Links
PubMed source DOI: 10.1007/s00425-003-1017-4 View journal details
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