University of Illinois

Wisconsin Alumni Research Foundation

United States of America, As Represented by the Secretary of Agriculture

Brian Diers

Tong Geon Lee

Matthew E Hudson

David Cook

Andrew F Bent

Shawn R Carlson

Curtis B Hill

Glen L Hartman

Yan Li

Teresa Hughes

Jianping Wang

Xiaoli Guo

Sara Melito

Adam Bayless

Methods of increasing the resistance of plants, in particular soybeans, to nematodes, in particular soybean cyst nematodes, are provided herein. The methods include increasing the expression of Glyma18g02580, Glyma18g02590 and/or Glyma18g2610 in cells of a plant and in particular in root cells of a plant to increase the resistance of the plant and plant cells to nematodes. The methods include increasing the expression using constitutive promoters or by increasing the copy number of the polynucleotides. Constructs for expressing these polypeptides, transgenic cells, transgenic plants and methods of generating the same are also provided. Methods of screening plant cells for resistance or susceptibility to nematodes are also provided.

Rhg1 mediated resistance to soybean cyst nematode

Described herein are methods of measuring, in a genomic sample from an individual, the relative frequency of a target sequence (that is, its copy number) with respect to a control sequence of known copy number at a different genomic locus in the same genome, wherein the target and control sequences differ by at least one single nucleotide variation (SNV). These methods involve both the target sequence and the control sequence in a single reaction/container, using a pair of primers that prime amplification of both the target sequence and the control sequence, or a single downstream primer and two upstream primers (that differs only at the position of the SNV between the target and control sequences), and measuring the abundance of each of the target sequence and the control sequence using SNV-specific labeled probes or primers, or a melting curve analysis that distinguishes between the amplified control and target sequences. The methods are exemplified with various different amplifications process. Also provided are methods of using these copy number detection methods, for instance, in breeding programs, identification, diagnosis, and so forth.

Copy number detection and methods

resistance (RAG) genes are provided by this invention, along with methods for identifying their presence using marker-assisted selection. Varieties ofandhaving resistance tohave been identified. The RAG genes, as well as the methods, aphid-resistant varieties, and markers disclosed herein may be used to breed new elite lines expressing soybean aphid resistance.

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Growing community of inventors

Urbana, IL, United States of America

Brian Diers