Tobacco Rar1, EDS1 and NPR1/NIM1 like genes are required for N-mediated resistance to tobacco mosaic virus

被引:787
作者
Liu, YL [1 ]
Schiff, M [1 ]
Marathe, R [1 ]
Dinesh-Kumar, SP [1 ]
机构
[1] Yale Univ, Dept Mol Cellular & Dev Biol, New Haven, CT 06520 USA
关键词
tobacco resistance gene; N; VIGS; signal transduction; TMV;
D O I
10.1046/j.1365-313X.2002.01297.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The tobacco N gene confers resistance to tobacco mosaic virus (TMV) and encodes a Toll-interleukin-1 receptor/nucleotide binding site/leucine-rich repeat (TIR-NBS-LRR) class protein. We have developed and used a tobacco rattle virus (TRV) based virus induced gene silencing (VIGS) system to investigate the role of tobacco candidate genes in the N -mediated signalling pathway. To accomplish this we generated transgenic Nicotiana benthamiana containing the tobacco N gene. The transgenic lines exhibit hypersensitive response (HR) to TMV and restrict virus spread to the inoculated site. This demonstrates that the tobacco N gene can confer resistance to TMV in heterologous N. benthamiana . We have used this line to study the role of tobacco Rar1- , EDS1- , and NPR1/NIM1- like genes in N -mediated resistance to TMV using a TRV based VIGS approach. Our VIGS analysis suggests that these genes are required for N function. EDS1 -like gene requirement for the N function suggests that EDS1 could be a common component of bacterial, fungal and viral resistance signalling mediated by the TIR-NBS-LRR class of resistance proteins. Requirement of Rar1 - like gene for N -mediated resistance to TMV and some powdery mildew resistance genes in barley provide the first example of converging points in the disease resistance signalling pathways mediated by TIR-NBS-LRR and CC-NBS-LRR proteins. The TRV based VIGS approach as described here to study N -mediated resistance signalling will be useful for the analysis of not only disease resistance signalling pathways but also of other signalling pathways in genetically intractable plant systems.
引用
收藏
页码:415 / 429
页数:15
相关论文
共 57 条
[1]   Different requirements for EDS1 and NDR1 by disease resistance genes define at least two R gene-mediated signaling pathways in Arabidopsis [J].
Aarts, N ;
Metz, M ;
Holub, E ;
Staskawicz, BJ ;
Daniels, MJ ;
Parker, JE .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1998, 95 (17) :10306-10311
[2]   Tobacco mosaic virus helicase domain induces necrosis in N gene-carrying tobacco in the absence of virus replication [J].
Abbink, TEM ;
Tjernberg, PA ;
Bol, JF ;
Linthorst, HJM .
MOLECULAR PLANT-MICROBE INTERACTIONS, 1998, 11 (12) :1242-1246
[3]   Consistent gene silencing in transgenic plants expressing a replicating potato virus X RNA [J].
Angell, SM ;
Baulcombe, DC .
EMBO JOURNAL, 1997, 16 (12) :3675-3684
[4]  
Ausubel FM., 1998, CURRENT PROTOCOLS MO
[5]   Fast forward genetics based on virus-induced gene silencing [J].
Baulcombe, DC .
CURRENT OPINION IN PLANT BIOLOGY, 1999, 2 (02) :109-113
[6]   The Rx gene from potato controls separate virus resistance and cell death responses [J].
Bendahmane, A ;
Kanyuka, K ;
Baulcombe, DC .
PLANT CELL, 1999, 11 (05) :781-791
[7]   The Arabidopsis downy mildew resistance gene, RPP13-Nd, functions independently of NDR1 and EDS1 and does not require the accumulation of salicylic acid [J].
Bittner-Eddy, PD ;
Beynon, JL .
MOLECULAR PLANT-MICROBE INTERACTIONS, 2001, 14 (03) :416-421
[8]   Virus-induced silencing of a plant cellulose synthase gene [J].
Burton, RA ;
Gibeaut, DM ;
Bacic, A ;
Findlay, K ;
Roberts, K ;
Hamilton, A ;
Baulcombe, DC ;
Fincher, GB .
PLANT CELL, 2000, 12 (05) :691-705
[9]   The Arabidopsis NPR1 gene that controls systemic acquired resistance encodes a novel protein containing ankyrin repeats [J].
Cao, H ;
Glazebrook, J ;
Clarke, JD ;
Volko, S ;
Dong, XN .
CELL, 1997, 88 (01) :57-63
[10]   Plant defence - Long view from a high plateau [J].
Dangl, J .
NATURE, 1999, 401 (6753) :543-544