race-specific resistance

race-specific resistance

or

vertical resistance

a situation where a small number of major genes in the host confer high levels of RESISTANCE to a specific attacking organism. Such a system, however, is likely to be ineffective should the attacking organism undergo genetic change. Compare NONRACE-SPECIFIC RESISTANCE.
References in periodicals archive ?
Loegering and Burton reported that race-specific resistance genes in wheat cultivars could be identified by comparing their reactions to different Pst pathotypes with those of cultivars with known resistance genes (Loegering and Burton, 1974).
Role of the penetration-resistance genes PEN1, PEN2 and PEN3 in the hypersensitive response and race-specific resistance in Arabidopsis thaliana.
Deployment of race-specific resistance gene has capable of providing highly effective protection against the disease [23].
One is major gene resistance, sometimes also called race-specific resistance, in which the wheat proteins recognize specific rust proteins and quickly wipe out the invader.
The Psp race-specific resistance to halo blight can be inherited quantitatively or by a single dominant or recessive allele (Asensio et al.
Department of Agriculture efforts to breed potatoes for race-specific resistance to the disease began in the 1920s.
After the establishment of hybridization programs, varieties with adult plant resistance (race non-specific resistance) and race-specific resistance were developed.
With regard to more potentially changing of rusts fungi by different events; mutation, migration in long-distances and selection pressure of cultivar genotypes on pathogen genotypes [2, 15], researchers should deploy race-nonspecific or combination of race-nonspecific with race-specific resistance instead of using only race-specific.
Considering the high adaptability and the rapid distribution of virulent isolates of Puccinia triticina over long distances, the best strategy for breeding durable leaf rust resistant cultivars should be the combination of race-specific resistance gene(s) with race nonspecific resistance gene(s) or QTL.
This is made more difficult by the presence of field resistance, in which the progress and severity of infection are reduced in the absence of race-specific resistance genes (Marchctti, 1983; Wang et al.
However, high genetic variation and the ability of the pathogen to evolve into new races with added new virulence always have been the major limiting factors in a successful long-term management of stripe rust when race-specific resistance genes are used.
Stalwart has white flowers, tawny pubescence, brown pods and shiny yellow seed with black hilum, and carries the Rps1-k gene for race-specific resistance to P.