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Titolo:
UNCOUPLING PR GENE-EXPRESSION FROM NPR1 AND BACTERIAL-RESISTANCE - CHARACTERIZATION OF THE DOMINANT ARABIDOPSIS CPR6-1 MUTANT
Autore:
CLARKE JD; LIU YD; KLESSIG DF; DONG XN;
Indirizzi:
DUKE UNIV,DEPT BOT,DEV CELL & MOL BIOL GRP,BOX 91000 DURHAM NC 27708 DUKE UNIV,DEPT BOT,DEV CELL & MOL BIOL GRP DURHAM NC 27708 RUTGERS STATE UNIV,WAKSMAN INST PISCATAWAY NJ 08855 RUTGERS STATE UNIV,DEPT MOL BIOL & BIOCHEM PISCATAWAY NJ 08855
Titolo Testata:
The Plant cell
fascicolo: 4, volume: 10, anno: 1998,
pagine: 557 - 569
SICI:
1040-4651(1998)10:4<557:UPGFNA>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
SYSTEMIC ACQUIRED-RESISTANCE; PATHOGENESIS-RELATED PROTEINS; PLANT-DISEASE RESISTANCE; TOBACCO MOSAIC-VIRUS; SIGNAL-TRANSDUCTION PATHWAY; SALICYLIC-ACID ACCUMULATION; TOMATO LEAVES; JASMONIC ACID; HOST-DEFENSE; INDUCTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
70
Recensione:
Indirizzi per estratti:
Citazione:
J.D. Clarke et al., "UNCOUPLING PR GENE-EXPRESSION FROM NPR1 AND BACTERIAL-RESISTANCE - CHARACTERIZATION OF THE DOMINANT ARABIDOPSIS CPR6-1 MUTANT", The Plant cell, 10(4), 1998, pp. 557-569

Abstract

In Arabidopsis, NPR1 mediates the salicylic acid (SA)-induced expression of pathogenesis-related (PR) genes and systemic acquired resistance (SAR), Here, we report the identification of another component, CPR6, that may function with NPR1 in regulating PR gene expression. The dominant CPR6-1 mutant expresses the SA/NPR1-regulated PR genes (PR-1, BGL2, and PR-5) and displays enhanced resistance to Pseudomonas syringae pv maculicola ES4326 and Peronospora parasitica Noco2 in the absenceof SAR induction. cpr6-1-induced PR gene expression is not suppressedin the cpr6-1 npr1-1 double mutant but is suppressed when SA is removed by salicylate hydroxylase. Thus, constitutive PR gene expression incpr6-1 requires SA but not NPR1. In addition, resistance to P. s. maculicola ES4326 is suppressed in the cpr6-1 npr1-1 double mutant, despite expression of PR-1, BGL2, and PR-5, Resistance to P. s, maculicola ES4326 must therefore be accomplished through unidentified antibacterial gene products that are regulated through NPR1. These results show that CPR6 is an important regulator of multiple signal transduction pathways involved in plant defense.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 09:18:07