NEW DISEASE RESISTANCE GENES IN SOYBEAN AGAINST PSEUDOMONAS-SYRINGAE PV GLYCINEA - EVIDENCE THAT ONE OF THEM INTERACTS WITH A BACTERIAL ELICITOR

被引：109

作者：

KEEN, NT ^{[1
]}

BUZZELL, RI ^{[1
]}

机构：

[1] AGR CANADA,RES STN,HARROW N0R 1G0,ONTARIO,CANADA

来源：

THEORETICAL AND APPLIED GENETICS | 1991年 / 81卷 / 01期

关键词：

DISEASE RESISTANCE GENES; SOYBEAN [GLYCINE-MAX (L) MERR; AVIRULENCE GENES; PSEUDOMONAS-SYRINGAE PATHOVARS;

D O I：

10.1007/BF00226123

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Soybean [Glycine max (L.) Merr.] cultivars Flambeau and Merit differed in their resistance to Pseudomonas syringae pv glycinea (Psg) race 4, carrying each of four different avirulence (avr) genes cloned from Psg or the related bacterium, Pseudomonas syringae pv tomato. Segregation data for F2 and F3 progeny of Flambeau x Merit crosses indicated that single dominant and nonallelic genes account for resistance to Psg race 4, carrying avirulence genes avrA, avrB, avrC, or avrD. Segregants were also recovered that carried all four or none of the disease resistance genes. One of the disease resistance genes (Rpg1, complementing bacterial avirulence gene B) had been described previously, but the other three genes - designated Rpg2, Rpg3, and Rpg4 - had not here to fore been defined. Rpg3 and Rpg4 are linked (40.5 +/- 3.5 recombination units). Rpg4 complements avrD, cloned from Pseudomonas syringae pv tomato, but a functional copy of this avirulence gene has not thus far been observed in Pseudomonas syringae pv glycinea. Resistance gene Rpg4 therefore may account in part for the resistance of soybean to Pseudomonas syringae pv tomato and other pathogens harboring avrD.

引用

页码：133 / 138

页数：6

共 19 条

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