doi: 10.1126/science.1067747.
Epub 2002 Feb 14.
Regulatory role of SGT1 in early R gene-mediated plant defenses
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- PMID: 11847308
- DOI: 10.1126/science.1067747
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Regulatory role of SGT1 in early R gene-mediated plant defenses
Science.
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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.
Comment in
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Plant biology. Resisting attack.Science. 2002 Mar 15;295(5562):2032-3. doi: 10.1126/science.1070443. Science. 2002. PMID: 11896264 No abstract available.
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