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Open Access Highly Accessed Research article

Pathogen-origin horizontally transferred genes contribute to the evolution of Lepidopteran insects

Zi-Wen Li1, Yi-Hong Shen1, Zhong-Huai Xiang1 and Ze Zhang12*

Author Affiliations

1 The Key Sericultural Laboratory of Agricultural Ministry, Southwest University, Chongqing 400715, China

2 The Institute of Agricultural and Life Sciences, Chongqing University, Chongqing 400044, China

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BMC Evolutionary Biology 2011, 11:356  doi:10.1186/1471-2148-11-356

Published: 12 December 2011

Additional files

Additional file 1:

Eubacterial organisms used in this detection.

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Additional file 2:

Archebacterial organisms used in this detection.

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Additional file 3:

Other organisms used in this detection.

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Additional file 4:

Detected doubtful sequences in honeybee.

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Additional file 5:

Homologous sequences of silkworm HTGs in other Lepidopteran insects.

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Additional file 6:

Multiple alignment of amino acid sequences and phylogenetic trees of detected HTGs.

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Additional file 7:

Average similarity between detected HTGs and predicted donor sequences. Red curve indicates the normal distribution (mean, 41.03%; s.d., 2.62%) of sequence similarity based on random sampling results. Blue curve indicates the normal distribute (mean, 41.02%; s.d., 9.76%) of sequence similarity between 1176 silkworm genes and their bacterial homologs. Arrow indicates the position of mean value (50.36%) of 14 types of HTGs.

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Additional file 8:

GC content distribution of detected HTGs. The normal distribution (mean, 47.87%; s.d., 7.86%) indicates GC contents of the silkworm 14,623 genes. The open circles represent GC contents of silkworm HTGs (from left to right: BGIBMGA000070, BGIBMGA009498, mean value of BGIBMGA011199 type, BGIBMGA013995, BGIBMGA005615, BGIBMGA007146, BGIBMGA002521, mean value of BGIBMGA007766 type, BGIBMGA001284, mean value of BGIBMGA010285 type, BGIBMGA012123, mean value of BGIBMGA005555 type, BGIBMGA008215, BGIBMGA008709). The solid circles represent GC contents of corresponding donor sequences. The donors and recipients are connected with arrow lines.

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