2014
Charcoal Rot: Host Resistance and Disease Development (1420-532-5647)
Contributor/Checkoff:
Category:
Sustainable Production
Keywords:
(none assigned)
Lead Principal Investigator:
John Rupe, University of Arkansas
Co-Principal Investigators:
Christopher Little, Kansas State University
Martin Chilvers, Michigan State University
Teresa Hughes, Purdue University
Kiersten Wise, Purdue University
Ahmad Fakhoury, Southern Illinois University
Jason Bond, Southern Illinois University at Carbondale
Curtis Hill, University of Illinois-Carbondale
Terry Niblack, University of Illinois-Carbondale
Grover Shannon, University of Missouri
Damon Smith, University of Wisconsin
Glen Hartman, USDA/ARS-University of Illinois
Alemu Mengistu, USDA/ARS-West Tennessee Experiment Station
+11 More
Project Code:
1420-532-5647
Contributing Organization (Checkoff):
Institution Funded:
Brief Project Summary:

Unique Keywords:
#charcoal rot, #genetic resistance - diseases, #soybean diseases, #soybean genetic markers
Information And Results
Project Deliverables

1. Information on resistance to charcoal rot in high yielding, commercial varieties that are immediately available for use by growers in the North Central and Southern U.S.
2. Information correlating the cut-stem greenhouse evaluation method for evaluating charcoal rot resistance to field resistance for varieties adapted to the North Central and Southern U.S.
3. Information regarding yield loss associated with infection by Macrophomina phaseolina for soybean varieties in MG I-V.
4. Information regarding yield loss associated with high and low soil populations of M. phaseolina.
5. Information on the effect of seeding rate on incidence and severity of charcoal rot.

Final Project Results

Progress for each KPI is specified according to the numbered KPIs in section 3.4:
1. Key findings indicate that charcoal rot is not just a “drought disease” and can occur under adequate moisture conditions. Also, epidemiological studies show the pathogen is present and infects plants throughout the season although symptoms typically show up in late reproductive stage. Control of charcoal rot is not related to choice of maturity group nor by planting date either.
2. USDA-TN has released one line with moderate resistance to charcoal rot and SCN resistance (JTN-43070 and since then, two MTAs have been issued to commercial breeders). Also, TN identified a set of 10 PI/germplasm accession lines as new sources of resistance. At MO, 8 new genetic sources of resistance have been identified. Work in IL and MO show that 5-10% of the current commercially grown varieties they tested had above average resistance.
3. Major seed companies have adopted the cut-stem assay as a high throughput initial screening device to screen their germplasm for charcoal rot.
4. USDA-MS is poised to publish a set of markers for a DT-4290, a long-time standard resistant line, making the first available markers available to the industry.
5. Work in KS and OH determined that SCN does not have a direct role in affecting charcoal rot severity – although certainly, control measures against SCN enhance overall yield protection along with measures to control charcoal rot.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.