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ARS Home » Midwest Area » Ames, Iowa » Corn Insects and Crop Genetics Research » Research » Publications at this Location » Publication #269983
Title: Advances on molecular studies of the interaction soybean - Asian rust

Author
item MORALES, AGUIDA - Universidade Federal De Vicosa
item BOREM, ALUIZIO - Universidade Federal De Vicosa
item Graham, Michelle
item ABELNOOR, RICARDO - Embrapa

Submitted to: Crop Breeding and Applied Biotechnology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 2/6/2012
Publication Date: 3/1/2012
Citation: Morales, A., Borem, A., Graham, M.A., Abelnoor, R. 2012. Advances on molecular studies of the interaction soybean - Asian rust. Crop Breeding and Applied Biotechnology. 12:1-7.

Interpretive Summary: Good management practices are essential for controlling outbreaks of Asian Soybean Rust (ASR) on soybean. Currently, most ASR outbreaks are controlled through the use of costly fungicides that can be harmful to the environment. The use ASR resistant or tolerant varieties could mitigate these costs. However, little is known about resistance mechanisms and how recognition of the pathogen occurs. Understanding the molecular mechanisms involved in defense is of primary importance in planning strategies for controlling this disease.

Technical Abstract: Effective management practices are essential for controlling rust outbreaks. The main control method used is the application of fungicides, which substantially increase the cost of production and are harmful to the environment. Prevention is still the best way to avoid more significant losses in soybean production. Alternatives, such as planting resistant varieties to the fungus, are also important. The use of resistant or tolerant varieties is the most promising method for control of Asian soybean rust. Recently, five single dominant genes to specific soybean rust isolates were described; Rpp1, Rpp2, Rpp3, Rpp4 and Rpp5. However, little is known about the molecular interaction between soybean and soybean rust and on the molecular pathway triggered by pathogen recognition. Understanding the molecular mechanisms involved in defense responses is of primary importance in planning strategies for controlling stress and consequently increasing plant adaptation to limiting conditions.