Viral infection of tobacco plants improves performance of Bemisia tabaci but more so for an invasive than for an indigenous biotype of the whitefly     

Jian Liu  Meng Li  Jun-min Li  Chang-jun Huang  Xue-ping Zhou  Fang-cheng Xu  Shu-sheng Liu 《Journal of Zhejiang University. Science. B》2010,11(1):30-40

The ecological effects of plant-virus-vector interactions on invasion of alien plant viral vectors have been rarely investigated. We examined the transmission of Tomato yellow leaf curl China virus (TYLCCNV) by the invasive Q biotype and the indigenous ZHJ2 biotype of the whitefly Bemisia tabaci, a plant viral vector, as well as the influence of TYLCCNV-infection of plants on the performance of the two whitefly biotypes. Both whitefly biotypes were able to acquire viruses from infected plants and retained t...  相似文献   

Analysis of synonymous codon usage and evolution of begomoviruses     

Xu XZ  Liu QP  Fan LJ  Cui XF  Zhou XP 《Journal of Zhejiang University. Science. B》2008,9(9):667-674

Begomoviruses are single-stranded DNA viruses and cause severe diseases in major crop plants worldwide. Based on current gcnomc sequcncc analyses, we found that synonymous codon usagc variations in the protein-coding genes of begomoviruses arc mainly influenced by mutation bias. Base composition analysis suggested that the codon usage bias of AV1 and BV1 genes is significant and their expressions are high. Fourteen codons were determined as translational optimal ones according to the comparison of codon usage pattcms bctwccn highly and lowly expressed genes. Interestingly the codon usagcs bctwccn bego moviruses from thc Old and the New Worlds are apparently different, which supports the idea that the bipartite bcgomoviruses of the New World might originate from bipartite ones of the Old World, whereas the latter evolve from the Old World monopartite begomoviruses.  相似文献