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Back to Basics: Are Begomoviruses Whitefly Pathogens?
Year:
2012
Source of publication :
Journal of Integrative Agriculture
Authors :
Ghanim, Murad
;
.
Volume :
11
Co-Authors:
Czosnek, H., Institute of Plant Science and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, Rehovot 76100, Israel
Ghanim, M., Department of Entomology, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
225
To page:
234
(
Total pages:
10
)
Abstract:
Begomoviruses and whiteflies have interacted for geological times. An assumed long-lasting virus-vector intimate relationship of this magnitude implies that the partners have developed co-evolutionary mechanisms that insure on one hand the survival and the efficient transmission of the virus, and on the other hand the safeguard of the insect host from possible deleterious effects of the virus. Several studies have indicated that viruses belonging to the Tomato yellow leaf curl virus (TYLCVs) family from China, Israel and Italy are reminiscent of insect pathogens. TYLCVs like all begomoviruses are transmitted in a circulative manner by the whitefly Bemisia tabaci. The survival of the virus in the haemolymph of B. tabaci is ensured by a GroEL homologue produced by a whitefly secondary endosymbiont. Following acquisition and transfer to non-host plants, the virus may remain associated with the insect for its entire 4-5 wk-long adult life. During this period, the ability of the insects to inoculate plants steadily decreased, but did not disappear. The long-term presence of TYLCVs in B. tabaci was associated with a decrease in the insect longevity and fertility. Viral DNA was transmitted to progeny, but seldom infectivity. TYLCV transcripts were found associated with the insects, raising the possibility of replication and expression in the vector. TYLCVs may spread amidst whiteflies during copulation. Functional genomics tools such as microarrays, deep sequencing, quantitative PCR and gene silencing allow revisiting the proposition that TYLCVs have retained, or acquired, some characteristics of an insect pathogen. © 2012 Chinese Academy of Agricultural Sciences.
Note:
Related Files :
Aleyrodidae
Begomovirus
Bemisia tabaci
Hexapoda
Lycopersicon esculentum
Tomato yellow leaf curl virus
transmission
vector
Show More
Related Content
More details
DOI :
10.1016/S2095-3119(12)60007-0
Article number:
Affiliations:
Database:
Scopus
Publication Type:
Review
;
.
Language:
English
Editors' remarks:
ID:
18825
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:24
You may also be interested in
Scientific Publication
Back to Basics: Are Begomoviruses Whitefly Pathogens?
11
Czosnek, H., Institute of Plant Science and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, Rehovot 76100, Israel
Ghanim, M., Department of Entomology, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Back to Basics: Are Begomoviruses Whitefly Pathogens?
Begomoviruses and whiteflies have interacted for geological times. An assumed long-lasting virus-vector intimate relationship of this magnitude implies that the partners have developed co-evolutionary mechanisms that insure on one hand the survival and the efficient transmission of the virus, and on the other hand the safeguard of the insect host from possible deleterious effects of the virus. Several studies have indicated that viruses belonging to the Tomato yellow leaf curl virus (TYLCVs) family from China, Israel and Italy are reminiscent of insect pathogens. TYLCVs like all begomoviruses are transmitted in a circulative manner by the whitefly Bemisia tabaci. The survival of the virus in the haemolymph of B. tabaci is ensured by a GroEL homologue produced by a whitefly secondary endosymbiont. Following acquisition and transfer to non-host plants, the virus may remain associated with the insect for its entire 4-5 wk-long adult life. During this period, the ability of the insects to inoculate plants steadily decreased, but did not disappear. The long-term presence of TYLCVs in B. tabaci was associated with a decrease in the insect longevity and fertility. Viral DNA was transmitted to progeny, but seldom infectivity. TYLCV transcripts were found associated with the insects, raising the possibility of replication and expression in the vector. TYLCVs may spread amidst whiteflies during copulation. Functional genomics tools such as microarrays, deep sequencing, quantitative PCR and gene silencing allow revisiting the proposition that TYLCVs have retained, or acquired, some characteristics of an insect pathogen. © 2012 Chinese Academy of Agricultural Sciences.
Scientific Publication
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