נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
The evolutionary advantage of breeding for tolerance over resistance against viral plant disease
Year:
1999
Source of publication :
Israel Journal of Plant Sciences
Authors :
Salomon, Raffi
;
.
Volume :
47
Co-Authors:
Salomon, R., Department of Virology, Institute of Plant Protection, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
135
To page:
139
(
Total pages:
5
)
Abstract:
A tolerant strain of a crop permits the propagation of an entire virus population, thus exerting a much lower selection pressure in favor of a virus mutant overcoming resistance. One may suppose that a tolerant crop may build up a large virus reservoir and therefore increase the chance of emergence of a more virulent type. However, the tolerant crop exerts a much lower selective pressure for a given virus line, and therefore the new virulent type remains a very low proportion of the total virus population. Susceptible crops, into which resistance to a given virus was bred, may be immune to this virus infection, thus preventing the buildup of a large virus reservoir. However, other host crops around it, or wild weeds facilitate propagation of this virus. This peripheral buildup of virus reservoir in the vicinity of the resistant crop creates a strong selection pressure for the propagation of the mutants overcoming resistance. Therefore, the planting of monoculture of a resistant crop accelerates the emergence of virulent virus lines that overcome this resistance. There is no reason to assume that resistance introduced into transgenic plants will be different. In the long run, tolerant crops may have the advantage over resistant crops, preserving for a longer time conditions in which virus infection causes only minimal damage. The production of tolerance to virus infection is an approach not yet favored by breeders and seed producers. However, it may be regarded as a less expensive, additional route to reduce the damage to crops inflicted by viral diseases.
Note:
Related Files :
chlorophyll
disease resistance
Evolution
Fluorescence
Plant Breeding
Tolerance
transgenic plant
virus infection
Show More
Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28170
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:37
You may also be interested in
Scientific Publication
The evolutionary advantage of breeding for tolerance over resistance against viral plant disease
47
Salomon, R., Department of Virology, Institute of Plant Protection, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
The evolutionary advantage of breeding for tolerance over resistance against viral plant disease
A tolerant strain of a crop permits the propagation of an entire virus population, thus exerting a much lower selection pressure in favor of a virus mutant overcoming resistance. One may suppose that a tolerant crop may build up a large virus reservoir and therefore increase the chance of emergence of a more virulent type. However, the tolerant crop exerts a much lower selective pressure for a given virus line, and therefore the new virulent type remains a very low proportion of the total virus population. Susceptible crops, into which resistance to a given virus was bred, may be immune to this virus infection, thus preventing the buildup of a large virus reservoir. However, other host crops around it, or wild weeds facilitate propagation of this virus. This peripheral buildup of virus reservoir in the vicinity of the resistant crop creates a strong selection pressure for the propagation of the mutants overcoming resistance. Therefore, the planting of monoculture of a resistant crop accelerates the emergence of virulent virus lines that overcome this resistance. There is no reason to assume that resistance introduced into transgenic plants will be different. In the long run, tolerant crops may have the advantage over resistant crops, preserving for a longer time conditions in which virus infection causes only minimal damage. The production of tolerance to virus infection is an approach not yet favored by breeders and seed producers. However, it may be regarded as a less expensive, additional route to reduce the damage to crops inflicted by viral diseases.
Scientific Publication
You may also be interested in