Glyphosate inhibits rust diseases in glyphosate-resistant wheat and soybean

Paul C. C Feng; G. James Baley; William P Clinton; Greg J Bunkers; Murtaza F Alibhai; Timothy C Paulitz; Kimberlee K Kidwell

doi:10.1073/pnas.0508873102

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Glyphosate inhibits rust diseases in glyphosate-resistant wheat and soybean

Journal article

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Glyphosate inhibits rust diseases in glyphosate-resistant wheat and soybean

Paul C. C Feng, G. James Baley, William P Clinton, Greg J Bunkers, Murtaza F Alibhai, Timothy C Paulitz and Kimberlee K Kidwell

Proceedings of the National Academy of Sciences - PNAS, Vol.102(48), pp.17290-17295

11/29/2005

DOI: https://doi.org/10.1073/pnas.0508873102

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https://hdl.handle.net/2376/118133

PMCID: PMC1297694

PMID: 16293685

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Abstract

disease control

Biological Sciences

Puccinia triticina

Puccinia striiformis f. sp. tritici

Phakopsora pachyrhizi

Glyphosate is a broad-spectrum herbicide used for the control of weeds in glyphosate-resistant crops. Glyphosate inhibits 5-enolpyruvyl shikimate 3-phosphate synthase, a key enzyme in the synthesis of aromatic amino acids in plants, fungi, and bacteria. Studies with glyphosate-resistant wheat have shown that glyphosate provided both preventive and curative activities against Puccinia striiformis f. sp. tritici and Puccinia triticina , which cause stripe and leaf rusts, respectively, in wheat. Growth-chamber studies demonstrated wheat rust control at multiple plant growth stages with a glyphosate spray dose typically recommended for weed control. Rust control was absent in formulation controls without glyphosate, dependent on systemic glyphosate concentrations in leaf tissues, and not mediated through induction of four common systemic acquired resistance genes. A field test with endemic stripe rust inoculum confirmed the activities of glyphosate pre- and postinfestation. Preliminary greenhouse studies also demonstrated that application of glyphosate in glyphosate-resistant soybeans suppressed Asian soybean rust, caused by Phakopsora pachyrhizi .

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Title: Glyphosate inhibits rust diseases in glyphosate-resistant wheat and soybean
Creators: Paul C. C Feng - Monsanto Biotechnology Research, St. Louis, MO 63017
G. James Baley - Monsanto Biotechnology Research, St. Louis, MO 63017
William P Clinton - Monsanto Biotechnology Research, St. Louis, MO 63017
Greg J Bunkers - Monsanto Biotechnology Research, St. Louis, MO 63017
Murtaza F Alibhai - Monsanto Biotechnology Research, St. Louis, MO 63017
Timothy C Paulitz - Monsanto Biotechnology Research, St. Louis, MO 63017
Kimberlee K Kidwell - Monsanto Biotechnology Research, St. Louis, MO 63017
Publication Details: Proceedings of the National Academy of Sciences - PNAS, Vol.102(48), pp.17290-17295
Academic Unit: Plant Pathology, Department of
Publisher: National Academy of Sciences
Identifiers: 99900548399101842
Language: English
Resource Type: Journal article