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Rice versus Xanthomonas oryzae pv. oryzae: a unique pathosystem
1National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China.
Current Opinion in Plant Biology
|March 8, 2013
Summary
Rice bacterial blight, caused by Xanthomonas oryzae pv. oryzae (Xoo), is managed using major disease resistance (MR) genes. This review highlights unique molecular mechanisms of rice qualitative resistance to Xoo, distinct from other pathosystems.
Area of Science:
- Plant pathology
- Molecular genetics
- Rice breeding
Background:
- Bacterial blight, caused by Xanthomonas oryzae pv. oryzae (Xoo), is a major threat to global rice production.
- Qualitative resistance, mediated by major disease resistance (MR) genes, is crucial for managing bacterial blight in rice.
- Existing knowledge suggests rice-Xoo interactions possess unique molecular mechanisms compared to other plant-pathogen systems.
Purpose of the Study:
- To review and highlight the unique features of qualitative resistance in rice against bacterial blight (Xoo).
- To focus on the identified and characterized major disease resistance (MR) genes involved in rice-Xoo pathosystems.
- To emphasize the distinctiveness of the rice-Xoo interaction for understanding plant qualitative resistance.
Main Methods:
- Literature review of genetic and molecular data on rice resistance to Xanthomonas oryzae pv. oryzae.
- Analysis of identified major disease resistance (MR) genes in rice.
- Comparative analysis of molecular mechanisms in different plant-pathogen interactions.
Main Results:
- Rice qualitative resistance to Xoo involves molecular mechanisms distinct from other pathosystems.
- Characterization of several major disease resistance (MR) genes has been achieved.
- The rice-Xoo interaction presents a unique model for studying plant qualitative resistance.
Conclusions:
- The molecular basis of rice qualitative resistance to Xoo is unique and warrants further investigation.
- Understanding these unique mechanisms can inform strategies for durable disease resistance in rice.
- The rice-Xoo pathosystem serves as a valuable model for elucidating diverse plant resistance strategies.
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