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Diverse Members of the AvrBs3/PthA Family of Type III Effectors Are Major Virulence Determinants in Bacterial Blight Disease of Rice
Abstract
AvrXa7 is a member of the avBs3/pthA gene family and the only known type III secretion system effector gene from Xanthomonas oryzae pv. oryzae with a major contribution to bacterial growth and lesion formation in bacterial blight disease of rice. We examined the general requirement for effectors of the AvrBs3/PthA family in bacterial blight of rice by identifying effectors from diverse strains of the pathogen. Inactivation of single effector genes in representative strains from Japan, Korea, and the Philippines resulted in severely limited growth in plants. Five strains harbored one gene of the avrBs3/pthA family, while one strain had two genes with the equivalent virulence activity of avrXa7. Sequence analysis revealed three genes with unique repeat arrangements in comparison to avrXa7. Comparison of the repetitive regions revealed a potential motif for the group that was also present in the repetitive region of avrBs3. However, the repetitive region of avrBs3 could not support virulence activity but, in combination with the C-terminal coding region of avrXa7, triggered a Xa7-dependent avirulence reaction. The results revealed diverse members of the avrBs3/pthA gene family with virulence activity in X. oryzae pv. oryzae and supported the hypothesis that bacterial blight disease of rice is highly dependent on a single class of type III effectors. The results also indicated that avrXa7 avirulence specificity is separable from virulence activity.
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Cited by
Breaking the Code of DNA Binding Specificity of TAL-Type III Effectors
Boch, J., Scholze, H., Schornack, S., Landgraf, A., Hahn, S., Kay, S., Lahaye, T., Nickstadt, A., & Bonas, U. (2009) · Science · doi:10.1126/science.1178811 · Cited by 2,470
Xanthomonas AvrBs3 Family-Type III Effectors: Discovery and Function
Boch, J., & Bonas, U. (2010) · Annual Review of Phytopathology · doi:10.1146/annurev-phyto-080508-081936 · Cited by 978
Broad-spectrum resistance to bacterial blight in rice using genome editing
Oliva, R., Ji, C., Atienza-Grande, G., Huguet-Tapia, J. C., Perez-Quintero, A., Li, T., Eom, J.-S., Li, C., Nguyen, H., Liu, B., et al. (2019) · Nature Biotechnology · doi:10.1038/s41587-019-0267-z · Cited by 851
Self-citationA Bacterial Effector Acts as a Plant Transcription Factor and Induces a Cell Size Regulator
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Zhou, J., Peng, Z., Long, J., Sosso, D., Liu, B., Eom, J., Huang, S., Liu, S., Vera Cruz, C., Frommer, W. B., et al. (2015) · The Plant Journal · doi:10.1111/tpj.12838 · Cited by 561
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Metadata
- Authors
- Yang, B., & White, F. F.
- Venue
- Molecular Plant-Microbe Interactions®
- Publisher
- Scientific Societies
- Published
- 2004-11
- Volume
- 17
- Issue
- 11
- Pages
- 1192-1200
- ISSN
- 0894-0282 (ISSN-L)
- 1943-7706
- OpenAlex
- W2152434720
- Cited by
- 221
- References
- 0
- FWCI
- 9.00
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yang, B., & White, F. F. (2004). Diverse Members of the AvrBs3/PthA Family of Type III Effectors Are Major Virulence Determinants in Bacterial Blight Disease of Rice. Molecular Plant-Microbe Interactions®. https://doi.org/10.1094/mpmi.2004.17.11.1192
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