Recessive Resistance Derived from Tomato cv. Tyking-Limits Drastically the Spread of Tomato Yellow Leaf Curl Virus

Viruses

Rita C. Pereira-Carvalho³  Juan A. Díaz-Pendón²  Maria Esther N. Fonseca³  Leonardo S. Boiteux³  Rafael Fernández-Muñoz²  Enrique Moriones²  Renato O. Resende¹ 

[1] Department of Cell Biology, University of Brasília (UnB), 70910-900 Brasília-DF, Brazil; E-Mail:;Institute for Mediterranean and Subtropical Horticulturev “La Mayora”, Málaga University—Spanish National Reseach Council (IHSM-UMA-CSIC), “La Mayora” Experimental Station, 29750 Algarrobo-Costa, Málaga, Spain; E-Mails:;National Center for Vegetable Crops Research (CNPH), Embrapa Hortaliças, CP 218, 70359-970 Brasília-DF, Brazil; E-Mails:

关键词: Begomovirus;    Bemisia tabaci;    epidemiology;    virus resistance;    Solanum lycopersicum;    TYLCV;   

DOI  :  10.3390/v7052518

来源: mdpi

【 摘 要 】

The tomato yellow leaf curl disease (TYLCD) causes severe damage to tomato (Solanum lycopersicum L.) crops throughout tropical and subtropical regions of the world. TYLCD is associated with a complex of single-stranded circular DNA plant viruses of the genus Begomovirus (family Geminiviridae) transmitted by the whitefy Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae). The tomato inbred line TX 468-RG is a source of monogenic recessive resistance to begomoviruses derived from the hybrid cv. Tyking F₁. A detailed analysis of this germplasm source against tomato yellow leaf curl virus-Israel (TYLCV-IL), a widespread TYLCD-associated virus, showed a significant restriction to systemic virus accumulation even under continuous virus supply. The resistance was effective in limiting the onset of TYLCV-IL in tomato, as significantly lower primary spread of the virus occurred in resistant plants. Also, even if a limited number of resistant plants could result infected, they were less efficient virus sources for secondary spread owing to the impaired TYLCV-IL accumulation. Therefore, the incorporation of this resistance into breeding programs might help TYLCD management by drastically limiting TYLCV-IL spread.

【 授权许可】

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© 2015 by the authors; licensee MDPI, Basel, Switzerland.