Title

Symbiotic Relationship between Bacteria and Soybeans Have Potential for a Natural Fertilizer

Presenter Information

Aaron Carson

Department

Biological Sciences

Major

Biological Sciences

Research Advisor

Westenberg, David J.

Advisor's Department

Biological Sciences

Funding Source

Missouri S& T Opportunities for Undergraduate Research Experiences (OURE) Program

Abstract

Bradyrhizobium japonicum is a soil dwelling bacteria known to have a symbiotic relationship with soybean. It is hypothesized that B. japonicum communicates with other B. japonicum through quorum sensing. At the right density of quorum sensing molecules, B. japonicum will nodulate the soybean roots and conduct nitrogen fixation for the plant. The nodulation by B. japonicum is currently used to replenish nitrogen depleted soils by tamers. Companies are selling pre-inoculated seedlings for tamers with B. japonicum present. In the lab, these plants grow and inoculate correctly. However, in the field tamers are having difficulty getting the inoculation process to occur correctly. We believe the pre-inoculated seedlings are inoculated with B. japonicum grown at to high concentrations mimicking the environment in the nodule. The high concentration will produce a high concentration of quorum sensing molecules which will hinder the bacterium from nodulating properly.

Biography

Aaron is from St. James, Missouri and has attended MS& T for 4 years. He is currently a senior and will be graduating in May. He started researching during the summer of 2011. He is the vice president of Scrubs. Aaron plans to attend medical school after graduation.

Research Category

Sciences

Presentation Type

Oral Presentation

Document Type

Presentation

Location

Upper Atrium/Hallway

Presentation Date

03 Apr 2013, 9:00 am - 11:45 am

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Apr 3rd, 9:00 AM Apr 3rd, 11:45 AM

Symbiotic Relationship between Bacteria and Soybeans Have Potential for a Natural Fertilizer

Upper Atrium/Hallway

Bradyrhizobium japonicum is a soil dwelling bacteria known to have a symbiotic relationship with soybean. It is hypothesized that B. japonicum communicates with other B. japonicum through quorum sensing. At the right density of quorum sensing molecules, B. japonicum will nodulate the soybean roots and conduct nitrogen fixation for the plant. The nodulation by B. japonicum is currently used to replenish nitrogen depleted soils by tamers. Companies are selling pre-inoculated seedlings for tamers with B. japonicum present. In the lab, these plants grow and inoculate correctly. However, in the field tamers are having difficulty getting the inoculation process to occur correctly. We believe the pre-inoculated seedlings are inoculated with B. japonicum grown at to high concentrations mimicking the environment in the nodule. The high concentration will produce a high concentration of quorum sensing molecules which will hinder the bacterium from nodulating properly.