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A novel source of resistance to tomato yellow leaf curl virus exhibiting a symptomless reaction to viral infection
Year:
1998
Authors :
Cohen, Shlomo (Plant protection)
;
.
Lapidot, Moshe
;
.
Pilowsky, Meir
;
.
Volume :
123
Co-Authors:
Friedmann, M., Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Dept. of Genetics and Plant Breeding
Lapidot, M., Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Department of Virology
Cohen, S., Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Department of Virology
Pilowsky, M., Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Dept. of Genetics and Plant Breeding
Facilitators :
From page:
1004
To page:
1007
(
Total pages:
4
)
Abstract:
Tomato yellow leaf curl virus (TYLCV), transmitted by the tobacco whitefy (Bemisia tabaci Genn.), can be devastating to tomato (Lycopersicon esculentum L.) crops in tropical and subtropical regions. The development of resistant cultivars is the best option for control of TYLCV. However, all the available resistant commercial cultivars tested at the Volcani Center, when inoculated with TYLCV, developed different levels of disease symptoms. In this study, we report the development of a breeding line, TY172, which is a symptomless carrier of TYLCV. Line TY172, whether infected in the greenhouse with viruliferous whiteflies, or when grown in the field under natural infection, showed no symptoms of the disease. Vital DNA was detected in infected TY172 plants, albeit at much lower levels than a susceptible infected control. In addition, grafting experiments using infected susceptible scions grafted onto TY172 stocks, showed that even when exposed continuously to very high levels of virus, line TY172 did not develop disease symptoms, nor did it accumulate high levels of the virus. When TY172 was crossed with susceptible lines, the hybrids exhibited milder symptoms and lower viral content than the susceptible parent, yet higher than that of TY172, suggesting a partial dominance for the TY172 resistance. Upon inoculation of F2 populations, the amount of symptomless individuals appeared in a ratio of ≃7:64. This suggests that at least three genes may account for the resistance.
Note:
Related Files :
Bemisia tabaci
disease resistance
Plant Breeding
plant genetics
TYLCV
virus DNA
virus infection
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More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
24424
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:07
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Scientific Publication
A novel source of resistance to tomato yellow leaf curl virus exhibiting a symptomless reaction to viral infection
123
Friedmann, M., Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Dept. of Genetics and Plant Breeding
Lapidot, M., Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Department of Virology
Cohen, S., Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Department of Virology
Pilowsky, M., Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel, Dept. of Genetics and Plant Breeding
A novel source of resistance to tomato yellow leaf curl virus exhibiting a symptomless reaction to viral infection
Tomato yellow leaf curl virus (TYLCV), transmitted by the tobacco whitefy (Bemisia tabaci Genn.), can be devastating to tomato (Lycopersicon esculentum L.) crops in tropical and subtropical regions. The development of resistant cultivars is the best option for control of TYLCV. However, all the available resistant commercial cultivars tested at the Volcani Center, when inoculated with TYLCV, developed different levels of disease symptoms. In this study, we report the development of a breeding line, TY172, which is a symptomless carrier of TYLCV. Line TY172, whether infected in the greenhouse with viruliferous whiteflies, or when grown in the field under natural infection, showed no symptoms of the disease. Vital DNA was detected in infected TY172 plants, albeit at much lower levels than a susceptible infected control. In addition, grafting experiments using infected susceptible scions grafted onto TY172 stocks, showed that even when exposed continuously to very high levels of virus, line TY172 did not develop disease symptoms, nor did it accumulate high levels of the virus. When TY172 was crossed with susceptible lines, the hybrids exhibited milder symptoms and lower viral content than the susceptible parent, yet higher than that of TY172, suggesting a partial dominance for the TY172 resistance. Upon inoculation of F2 populations, the amount of symptomless individuals appeared in a ratio of ≃7:64. This suggests that at least three genes may account for the resistance.
Scientific Publication
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