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1 January 2003 Glufosinate reduces fungal diseases in transgenic glufosinate-resistant bentgrasses (Agrostis spp)
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Abstract

Glufosinate-resistant transgenic creeping and velvet bentgrass plants expressing a bar gene under the control of the maize ubiquitin promoter were inoculated separately with the fungal pathogens, Rhizoctonia solani and Sclerotinia homoeocarpa, before or after treatment with 560 mg L−1 of glufosinate at a rate of 0.56 kg ha−1. Application of the herbicide 3 h before or 1 d after fungal inoculation significantly reduced infection of these transgenic grasses by R. solani and S. homoeocarpa. Assessment of the in vitro antifungal activity of the herbicide showed that 336 and 448 mg L−1 glufosinate completely inhibited the mycelial growth of S. homoeocarpa and R. solani, respectively. The results suggest that the nonselective herbicide glufosinate may also be used to suppress the activity of some fungal pathogens in turf composed of these transgenic glufosinate-resistant creeping and velvet bentgrasses.

Nomenclature: Glufosinate; phosphinothricin; creeping bentgrass, Agrostis palustris Huds. AGSPL; velvet bentgrass, Agrostis canina L. AGSCN.

Yuexia Wang, Marsha Browning, Bridget A. Ruemmele, Joel M. Chandlee, Albert P. Kausch, and Noel Jackson "Glufosinate reduces fungal diseases in transgenic glufosinate-resistant bentgrasses (Agrostis spp)," Weed Science 51(1), 130-137, (1 January 2003). https://doi.org/10.1614/0043-1745(2003)051[0130:GRFDIT]2.0.CO;2
Received: 17 April 2002; Accepted: 9 July 2002; Published: 1 January 2003
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