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ARS Home » Northeast Area » Frederick, Maryland » Foreign Disease-Weed Science Research » Research » Publications at this Location » Publication #429326
Research Project: Integrative Genomic and Biological Approaches to Detect and Manage Emerging Foreign Fungal and Oomycete Plant Pathogens

Location: Foreign Disease-Weed Science Research

Title: Registration of DS13-135, DS13-141, DS14-341, DS18-411, and DS19-22 soybean germplasm lines with resistance to soybean rust and Phytophthora root and stem rot

Author
item Pedley, Kerry
item Smith, James
item FREDERICK, REID - Retired ARS Employee
item Stone, Christine
item MOREL, WILFRIDO - Paraguayan Institute Of Agrarian Technology
item RODRIGUEZ, EDUARDO - Paraguayan Grains And Oilseed Traders Association
item Li, Shuxian
item SCHOLZ, RUTH - Paraguayan Institute Of Agrarian Technology
item Cai, Guohong
item Gillen, Anne
item RAY, JEFFREY - Retired ARS Employee
item HARTMAN, GLEN - Retired ARS Employee
item Kumar, Neeraj

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/30/2026
Publication Date: N/A
Citation: N/A

Interpretive Summary: Soybean rust is an economically significant disease that negatively affects soybean production worldwide. The disease thrives in tropical and subtropical regions, but has also become a consistent late-season disease in the southeastern United States since its introduction in 2004. To reduce reliance on fungicides and to better manage the disease, the USDA-ARS in collaboration with the Paraguayan Institute of Agrarian Technology (IPTA) and the Paraguayan Grains and Oilseed Traders Association (CAPECO) developed and released five new soybean germplasm lines. These lines each have unique resistance to soybean rust relative to the others. Additionally, these lines also have resistance to Phytophthora root and stem rot, a disease that causes significant drag for soybean yield in the United States. These improved soybean lines will be useful to soybean breeders for jointly improving resistance to soybean rust and Phytophthora root and stem rot in elite soybean cultivars, which ultimately benefits farmers, growers and the American public.

Technical Abstract: Soybean rust (SBR), caused by Phakopsora pachyrhizi Syd., is an economically significant disease that negatively impacts soybean [Glycine max (L.) Merr.] production worldwide. The disease is particularly problematic in the tropical and subtropical regions of Africa, Asia, and South America, but has also become a consistent late-season disease in the southeastern United States. Fungicides are the primary means for managing the disease because most cultivars lack resistance. We crossed SBR-resistant germplasms (developed by ARS) L86-1752 (PI 547878) and L87-0482 (PI 547879) with three SBR-resistant lines (GC00138-29, GC84058-18-4, and GC84051-9-1) developed by the World Vegetable Center to develop five new germplasm lines. The five soybean germplasm lines, DS13-135 (PI 707923), DS13-141 (PI 707924), DS14-341 (PI 707925), DS18-411 (PI 707926), and DS19-22 (PI 707927) each have phenotypically distinct resistance to SBR, relative to the others, based on their differential reaction to domestic and international P. pachyrhizi isolates. The USDA-ARS, the Instituto Paraguayo de Tecnología Agraria, and the Cámara Paraguaya de Exportadores de Cereales y Oleaginosas released these lines because they have phenotypically distinct resistance to SBR and have resistance to Phytophthora root and stem rot (PRSR) caused by Phytophthora sojae Kaufm. & Gerd. These lines will be useful to soybean breeders for jointly improving resistance to SBR and PRSR.