SPURIOUS SYMPTOMS CAUSED BY INOCULUM CARRIERS USED IN PLANT DISEASE RESISTANCE EVALUATION

2013-04-20
Loading...
Thumbnail Image

View/Download File

Persistent link to this item

Statistics
View Statistics

Journal Title

Journal ISSN

Volume Title

Title

SPURIOUS SYMPTOMS CAUSED BY INOCULUM CARRIERS USED IN PLANT DISEASE RESISTANCE EVALUATION

Published Date

2013-04-20

Publisher

Type

Presentation

Abstract

Symptom development resulting from inoculation and infection with plant pathogens is necessary in order to evaluate plants for disease resistance. The standard technique for infecting soybean (Glycine max) with Fusarium solani, a root rot pathogen, involves inoculation of growth media with infested seed as an inoculum substrate carrying the pathogen. It has been reported that some uninfested substrates can have adverse effects upon shoot growth and root development. These effects also include lesion-like necrosis similar to that caused by soybean root rot pathogens. The objective of our research is to determine if uninfested inoculum substrate affects soybean shoot or root growth and root symptom development. Soybean seeds were planted in media inoculated with seed of red sorghum, white sorghum, or sudan grass that had been infested with Fusarium solani or remained uninfested. After 14 days of growth, foliar and root necrosis scores, shoot and root dry weights, and stand counts were evaluated. When the effect of uninfested seed was compared with that of infested seed, the uninfested treatment caused more severe root rot symptoms and decreased shoot and root biomass by 20% and 15% respectively. Our results indicate that the uninfested inoculum substrate can cause both spurious growth reduction and symptom development that may mislead the researcher conducting soybean variety evaluations for disease resistance.

Keywords

Description

Related to

Replaces

License

Series/Report Number

Funding information

This research was supported by the Undergraduate Research Opportunities Program (UROP).

Isbn identifier

Doi identifier

Previously Published Citation

Suggested citation

Barbeau, Adam. (2013). SPURIOUS SYMPTOMS CAUSED BY INOCULUM CARRIERS USED IN PLANT DISEASE RESISTANCE EVALUATION. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/153341.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.