The Arabidopsis downy mildew resistance gene, RPP13-Nd, functions independently of NDR1 and EDS1 and does not require the accumulation of salicylic acid

被引：86

作者：

Bittner-Eddy, PD ^{[1
]}

Beynon, JL ^{[1
]}

机构：

[1] Hort Res Int, Warwick CV35 9EF, England

来源：

MOLECULAR PLANT-MICROBE INTERACTIONS | 2001年 / 14卷 / 03期

关键词：

D O I：

10.1094/MPMI.2001.14.3.416

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

RPP13-Nd-mediated resistance prevents parasitism by five isolates of Peronospora parasitica (At) ina transgenic Arabidopsis. Columbia background. We tested the effect of a number of known disease resistance mutations on the RPP13-Nd function and found that resistance remained unaltered in plants carrying mutations in either EDS1 or NDR1 and in double ndr1-1/eds1-2 mutant lines. Furthermore, we found that pbs2, pad4-1, npr1-1, and rps5-1, which compromise resistance to a number of P. parasitica (At) isolates, had no affect on RPP13-Nd function. In addition, RPP13-Nd-mediated resistance remained unchanged in a background of salicylic acid depletion (nahG). We conclude that RPP13-Nd is the first Arabidopsis R gene product reported to act via a novel signaling pathway that is independent of salicylic acid-mediated responses and is completely independent of NDR1 and EDS1.

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页码：416 / 421

页数：6

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