scholarly journals Genotypic diversity of Citrus tristeza virus within red grapefruit, in a field trial site in South Africa

2015 ◽  
Vol 142 (3) ◽  
pp. 531-545 ◽  
Author(s):  
D. A. Read ◽  
G. Pietersen
Keyword(s):  
South Africa ◽  
Field Trial ◽  
Citrus Tristeza Virus ◽  
Genotypic Diversity ◽  
Trial Site ◽  
Tristeza Virus ◽  
Citrus Tristeza

scholarly journals Survey of Citrus tristeza virus (CTV) on Citrus paradisi (Macfad.) cv. “Marsh” in South Africa

2018 ◽  
Vol 151 (4) ◽  
pp. 1101-1105 ◽  
Author(s):  
D. A. Read ◽  
M. F. Palacios ◽  
J. Figueroa ◽  
B. Stein ◽  
G. Pietersen
Keyword(s):  
South Africa ◽  
Citrus Tristeza Virus ◽  
Citrus Paradisi ◽  
Tristeza Virus ◽  
Citrus Tristeza

Grapefruit Field Trial Evaluation of Citrus Tristeza Virus T68-Strain Sources

Plant Disease ◽  
2020 ◽  
pp. PDIS-06-20-1259
Author(s):  
Glynnis Cook ◽  
Johannes H. J. Breytenbach ◽  
Chanel Steyn ◽  
Rochelle de Bruyn ◽  
Stephanus P. van Vuuren ◽  
...  
Keyword(s):  
Field Trial ◽  
Citrus Tristeza Virus ◽  
Growth Yield ◽  
Field Application ◽  
Limpopo Province ◽  
Long Term Effects ◽  
Tristeza Virus ◽  
Stem Pitting ◽  
Citrus Tristeza

Determination of virus genomes and differentiation of strains and strain variants facilitate the linkage of biological expression to specific genetic units. For effective management of stem pitting disease of citrus tristeza virus (CTV) by cross-protection, an understanding of these links is necessary. The deliberate field application of a biological agent such as a virus first requires a thorough assessment of the long-term impact before it can be applied commercially. Three CTV sources were genetically characterized as different variants of the T68 strain, and their long-term effects on stem pitting and production were investigated. The different CTV sources were inoculated to ‘Star Ruby’ grapefruit trees and evaluated for a number of biological parameters in a field trial in the Limpopo Province of South Africa over a 10-year period. Significant differences were observed in stem pitting severity, impact on tree growth, yield, and the percentage of small fruit produced. These T68 variants were also associated with different stem pitting phenotypes. The variants differed in only 44 nucleotide positions across their genomes, and these minor genetic differences can therefore be used to identify possible genome regions affecting stem pitting.

First report of citrus tristeza virus in commercial citrus orchards in Tunisia

2021 ◽  
Author(s):  
Asma Najar ◽  
Imen Hamdi ◽  
Souad Mahmoud ◽  
Lassaad Medhioub ◽  
Imed Jaouadi ◽  
...  
Keyword(s):  
Citrus Tristeza Virus ◽  
First Report ◽  
Citrus Orchards ◽  
Tristeza Virus ◽  
Citrus Tristeza

A model for the spread and control of citrus tristeza virus disease

1989 ◽  
Vol 16 (3) ◽  
pp. 315-320
Author(s):  
Ruth Marcus ◽  
Hovav Talpaz ◽  
Moshe Bar-Joseph
Keyword(s):  
Citrus Tristeza Virus ◽  
Virus Disease ◽  
And Control ◽  
Tristeza Virus ◽  
Citrus Tristeza
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