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Lack of synergistic effects in tomato plants co‐infected with tomato severe rugose virus and tomato chlorosis virus
Author(s) -
Bampi D.,
Favara G. M.,
Edwards Molina J. P.,
Rezende J. A. M.
Publication year - 2019
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/ppa.13004
Subject(s) - biology , whitefly , chlorosis , begomovirus , inoculation , cultivar , geminiviridae , tomato yellow leaf curl virus , virus , horticulture , plant virus , titer , solanaceae , dry weight , virology , botany , biochemistry , gene
The begomovirus Tomato severe rugose virus (To SRV ) and the crinivirus Tomato chlorosis virus (To CV ), in single and co‐infections, are very common in tomato crops in Brazil. Both viruses are transmitted by the whitefly Bemisia tabaci MEAM 1 (biotype B). The objective of this study was to analyse the interaction between To SRV and To CV in tomato plants of cultivars Santa Clara and Kada. Plants at 15, 30 and 45 days after emergence were inoculated with 30 viruliferous B. tabaci per plant. The following treatments were compared: plants inoculated with To SRV , To CV , To SRV + To CV , and healthy (control). The interaction between these viruses was analysed by measuring the virus titre by qPCR and the fresh and dry weights of the aerial parts of the tomato plants. Based on two independent assays, no significant effects for co‐infection of To SRV and To CV on virus titres and plant development were observed compared to single infections. The dry weight of tomato plants of both cultivars infected with To SRV , To CV , or co‐infected did not differ significantly. However, the dry weight of Santa Clara tomato plants infected with To SRV , To CV and To SRV + To CV showed mean reductions of 21.5%, 25.5% and 32%, respectively, compared to healthy plants, and mean reductions for Kada were 31.7%, 37.5% and 38%, respectively.