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Different interactions between Cucumber mosaic virus and Tomato mosaic virus in tomato varieties
Yixing Li *,Guo Hong,Chen Shaoning,Chen Jishuang
Institute of Bioengineering, Zhejiang Sci-Tech University
*Correspondence author
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Funding: 国家“863”项目（No.2008AA10Z129）
Opened online:15 January 2010
Accepted by: none
Citation: Yixing Li,Guo Hong,Chen Shaoning.Different interactions between Cucumber mosaic virus and Tomato mosaic virus in tomato varieties[OL]. [15 January 2010] http://en.paper.edu.cn/en_releasepaper/content/39033
 
 
Different interactions between CMV (Cucumber mosaic virus) and ToMV (Tomato mosaic virus) had been obtained in several tomato varieties. When tomato cv. Hezuo 903 plants were first inoculated with CMV-Fny, and then followed by a second inoculation with ToMV-N5 after 6-8 days, plants with co-infection expressed CMV-Fny-induced symptoms. The ToMV-N5-induced necrosis just localized on the inoculated leaves. Typical interference could be summarized for this phenomenon. Systemic necrosis induced by ToMV-N5 and interference between CMV-Fny and ToMV-N5 could occur in most tomato varieties (Hangza 1 and Zheza 809) except Zhongshu 4. They performed mild mosaic and synergism instead. The transcription of defense-related genes (PR-1a1 and PR-2) had been detected in tomato cv. Hezuo 903 plants among interference reaction. Results showed that two PR genes did not express in inoculated plants with mosaic and leaf deformation symptoms but was activated in ToMV-N5 infected plants with necrosis symptoms. It indicated that these two genes were effective with ToMV-N5 infection and could be interfered by pre-inoculation with CMV-Fny. Genotypes of resistance gene Tm2 in tomato cv. Zhongshu 4 and Hezuo 903 had been identified. Results revealed that two tomato varieties genotypes were both consistent with symptoms induced by ToMV-N5. It demonstrated that there may be a certain relationship between infection symptoms caused by ToMV-N5 on these two tomato varieties and genotype of Tm2.
Keywords:interference;Pathogenesis Related Protein;synergism;Tm2
 
 
 

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