Event Date

September 1, 2020, 12:00 PM - 1:00 PM


Research Lecture Series

Program Information

Lunchtime Lectures
Dates: First Tuesday of each month
Time: 12 - 1pm
Location: online for now
Cost: Free, Open to the Public

BRIT Research Seminars
Date: Various dates throughout year
Time: 12 - 1pm 
Location: online for now
Cost: Free, Open to the Public
Visit the event page for specific date and time information.

Point of Contact

Brooke Byerley Best, Ph.D.

Director of Research Programs

Regional Evaluation and Improvement of a Drought-tolerant Bradyrhizobium Inoculant

A Lunchtime Lecture by Christian Peterson, University of Texas-Arlington

The soybean symbiont Bradyrhizobium japonicum fixes atmospheric nitrogen into ammonia in specialized organs called root nodules, which supplies its host with a useable nitrogen source. B. japonicum cultures have been applied as inoculants (i.e., biological fertilizers) to soybean fields and its application has been shown to be beneficial to soil health, plant growth, and final yield. However, drought presents a huge impediment to this application due to inhibition of symbiotic nitrogen fixation by killing off the symbiont. Our lab has developed a novel molecular marker system to identify intrinsic drought resistance, which has led to the isolation of a Texas-native drought-resistant strain. Here, I will discuss how we isolated and developed the Texas-native strain as well as the findings from our lab work to the field trials across varying regions to look at efficacy of the drought-tolerant strain verses a commercial inoculant and a non-inoculated control. Parameters examined include soil physio-chemical property, plant vitality, nodulation capability, and final soybean yield.

For more on Christian's work and other happenings from his colleagues at UTA, follow the Chang Lab on Twitter (@The_ChangLab).

  • Header/thumbnail photo by Louisa Howard, Dartmouth Electron Microscope Facility. Cross-section through a soybean root nodule containing Bradyrhyzobium japonicum.

This lecture was recorded
and is now available via YouTube.


About Research Lecture Series

The BRIT Lecture Series is designed to create community wide conversation about a diverse range of important and rapidly developing topics. This series gives scientists and speakers a forum for sharing the most current information about their areas of expertise and allows the public to interact with leading members of the local, national, and international scientific community.

Our Lecture Series is made up of Lunchtime Lectures and Research Seminars. Lunchtime Lectures take place the first Tuesday of each month, February – July and September – November, from noon - 1pm in the BRIT Commons (**Now held virtually until further notice***). Research Seminars take place periodically throughout the year and are scheduled based on the availability of our in-house and visiting researchers.

All events are free and open to the public. Please watch this page and our social media channels for announcements of upcoming Lunchtime Lectures and Researcher Seminars.