Regulatory Role of SGT1 in Early R Gene-Mediated Plant Defenses-Reference-Cited by-同舟云学术

Regulatory Role of SGT1 in Early R Gene-Mediated Plant Defenses

Published:2002-03-15 Issue:5562 Volume:295 Page:2077-2080
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Austin Mark J.¹,Muskett Paul¹,Kahn Katherine¹,Feys Bart J.¹,Jones Jonathan D. G.¹,Parker Jane E.¹²

Affiliation:

1. Sainsbury Laboratory, John Innes Centre, Colney Lane, Norwich NR4 7UH, UK.

2. Max Planck Institute for Plant Breeding Research, Carl-von-Linné Weg 10, D-50829 Cologne, Germany.

Abstract

Animal SGT1 is a component of Skp1-Cullin–F-box protein (SCF) ubiquitin ligases that target regulatory proteins for degradation. Mutations in one ( SGT1b ) of two highly homologous Arabidopsis SGT1 genes disable early plant defenses conferred by multiple resistance ( R ) genes. Loss of SGT1b function in resistance is not compensated for by SGT1a . R genes differ in their requirements for SGT1b and a second resistance signaling gene, RAR1 , that was previously implicated as an SGT1 interactor. Moreover, SGT1b and RAR1 contribute additively to RPP5 -mediated pathogen recognition. These data imply both operationally distinct and cooperative functions of SGT1 and RAR1 in plant disease resistance.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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