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Comparative Aphid Transmission of a Common Citrus Tristeza Virus Isolate and a Seedling Yellows Isolate Recently Introduced into Spain

Comparative tests of transmission efficiency have been performed using various aphid species and T-300, an isolate of citrus tristeza virus (CTV) widely distributed in Spain, and T-387 a seedling yellows tristeza isolate (CTV-SY) recently introduced into this country. The aphid species tested were t...

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Main Authors: Hermoso-De-Mendoza, Alfonso, Ballester-Olmos, José F., Pina, José A.
Other Authors: Timmer, L. W.
Format: conferenceObject
Language:Inglés
Published: IOCV 2021
Subjects:
Isolates
Mexican lime
H20 Plant diseases
H10 Pests of plants
U40 Surveying methods
Citrus tristeza virus
Disease transmission
Aphis citricola
Toxoptera aurantii
Myzus persicae
Aphis gossypii
Sweet oranges
Online Access:http://hdl.handle.net/20.500.11939/7692
https://iocv.ucr.edu/sites/g/files/rcwecm4696/files/2020-06/10th068_070.pdf
Summary:Comparative tests of transmission efficiency have been performed using various aphid species and T-300, an isolate of citrus tristeza virus (CTV) widely distributed in Spain, and T-387 a seedling yellows tristeza isolate (CTV-SY) recently introduced into this country. The aphid species tested were those most abundant on citrus in Spain; Aphis citricola, Toxoptera aurantii, Myzus persicae, and Aphis gossypii. A minimum of 200 aphids were used for each test plant. Sweet orange was used as a donor and Mexican lime as a receptor. Aphis gossypi transmitted T-387 with lower efficiency (60%) than T-300 CTV (90%). A. citricola transmitted the two isolates with a very low efficiency. No transmission was observed with T. aurantii or M. persicae.

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