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United States Department of Agriculture

Agricultural Research Service

Research Project: THE DEVELOPMENT OF TECHNOLOGIES FOR THE IMPROVEMENT OF PASTURE GRASSES

Location: Forage and Range Research

2013 Annual Report


1a.Objectives (from AD-416):
The objective of this cooperative research project is to develop technologies associated with grass endophytes and evaluate plant germplasm for use in irrigated and non-irrigated pastures.


1b.Approach (from AD-416):
Collaborative experiments will be designed and implemented either in the laboratory or the open-field depending upon the objective. Laboratory experiments will be conducted jointly in Logan, Utah, and Christchurch, New Zealand, where endophytes are involved. Where experiments involve the construction of molecular markers for endophyte identification, work will be performed in Logan, Utah. Germplasm evaluation of Cropmark grass accessions (cultivars and lines) will be conducted in the Great Basin region of Utah in appropriate growing areas. This research will attempt to: .
1)Develop methodologies associated with the identification and mutagenesis of endophytes and their inoculation into grass plants;.
2)Construct markers which will identify specific endophytes; and.
3)Evaluate agronomic performance of endophyte and non-endophyte containing Cropmark grass germplasm along with appropriate + or - endophyte containing control germplasm.


3.Progress Report:

Plant endophytes are found in a wide array of grasses. Some endophytes produce toxic effects to livestock and wildlife, while some have demonstrated agricultural benefits such as increased resistance to insect, nematodes, and fungi of the host plant through the production of alkaloid compounds. One of the purposes of this project is to develop strain-specific DNA marker that will be useful in identifying specific strains of beneficial Neotyphodium endophytes. Genomic DNA was successfully extracted and purified from four strains of endophytes. These genomic DNAs were sequenced at the Utah State University Center for Integrated Biosystems using a full plate on the 454 Sequencer. The resulting sequence data continues to be analyzed.


Last Modified: 9/21/2014
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