Search Results - "Sammons, R Douglas"

Evolution of a double amino acid substitution in the 5-enolpyruvylshikimate-3-phosphate synthase in Eleusine indica conferring high-level glyphosate resistance by Yu, Qin, Jalaludin, Adam, Han, Heping, Chen, Ming, Sammons, R Douglas, Powles, Stephen B

“…Glyphosate is the most important and widely used herbicide in world agriculture. Intensive glyphosate selection has resulted in the widespread evolution of…”
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De Novo Genome Assembly of the Economically Important Weed Horseweed Using Integrated Data from Multiple Sequencing Platforms by Peng, Yanhui, Lai, Zhao, Lane, Thomas, Nageswara-Rao, Madhugiri, Okada, Miki, Jasieniuk, Marie, O'Geen, Henriette, Kim, Ryan W., Sammons, R. Douglas, Rieseberg, Loren H., Stewart, Neal

“…Horseweed (Conyza canadensis), a member of the Compositae (Asteraceae) family, was the first broadleaf weed to evolve resistance to glyphosate. Horseweed, one…”
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Rapid vacuolar sequestration: the horseweed glyphosate resistance mechanism [Erratum: 2010 May, v. 66, no. 5, p. 576] by Ge, Xia, d'Avignon, D. André, Ackerman, Joseph JH, Sammons, R. Douglas

“…BACKGROUND: Glyphosate-resistant (GR) weed species are now found with increasing frequency and threaten the critically important glyphosate weed management…”
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Glyphosate resistance in Ambrosia trifida: Part 2. Rapid response physiology and non‐target‐site resistance by Moretti, Marcelo L, Van Horn, Christopher R, Robertson, Renae, Segobye, Kabelo, Weller, Stephen C, Young, Bryan G, Johnson, William G, Douglas Sammons, R, Wang, Dafu, Ge, Xia, d' Avignon, André, Gaines, Todd A, Westra, Philip, Green, Amanda C, Jeffery, Taylor, Lespérance, Mackenzie A, Tardif, François J, Sikkema, Peter H, Christopher Hall, J, McLean, Michael D, Lawton, Mark B, Schulz, Burkhard

“…BACKGROUND The glyphosate‐resistant rapid response (GR RR) resistance mechanism in Ambrosia trifida is not due to target‐site resistance (TSR) mechanisms. This…”
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Gene amplification confers glyphosate resistance in Amaranthus palmeri by Gaines, Todd A, Zhang, Wenli, Wang, Dafu, Bukun, Bekir, Chisholm, Stephen T, Shaner, Dale L, Nissen, Scott J, Patzoldt, William L, Tranel, Patrick J, Culpepper, A. Stanley, Grey, Timothy L, Webster, Theodore M, Vencill, William K, Sammons, R. Douglas, Jiang, Jiming, Preston, Christopher, Leach, Jan E, Westra, Philip

“…The herbicide glyphosate became widely used in the United States and other parts of the world after the commercialization of glyphosate-resistant crops. These…”
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Characterization of the horseweed (Conyza canadensis) transcriptome using GS-FLX 454 pyrosequencing and its application for expression analysis of candidate non-target herbicide resistance genes by Peng, Yanhui, Abercrombie, Laura LG, Yuan, Joshua S, Riggins, Chance W, Sammons, R. Douglas, Tranel, Patrick J, Stewart, C. Neal Jr

“…BACKGROUND: The de novo transcriptome sequencing of a weedy plant using GS-FLX 454 technologies is reported. Horseweed (Conyza canadensis L.) was the first…”
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Cross-resistance to dicamba, 2,4-D, and fluroxypyr in Kochia scoparia is endowed by a mutation in an AUX/IAA gene by LeClere, Sherry, Wu, Chenxi, Westra, Philip, Sammons, R. Douglas

“…The understanding and mitigation of the appearance of herbicide-resistant weeds have come to the forefront of study in the past decade, as the number of weed…”
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Vacuolar Glyphosate-Sequestration Correlates with Glyphosate Resistance in Ryegrass (Lolium spp.) from Australia, South America, and Europe: A 31P NMR Investigation by Ge, Xia, d’Avignon, D. André, Ackerman, Joseph J. H, Collavo, Alberto, Sattin, Maurizio, Ostrander, Elizabeth L, Hall, Erin L, Sammons, R. Douglas, Preston, Christopher

“…Lolium spp., ryegrass, variants from Australia, Brazil, Chile, and Italy showing differing levels of glyphosate resistance were examined by 31P NMR. Extents of…”
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A dicamba resistance‐endowing IAA16 mutation leads to significant vegetative growth defects and impaired competitiveness in kochia (Bassia scoparia) by Wu, Chenxi, LeClere, Sherry, Liu, Kang, Paciorek, Marta, Perez‐Jones, Alejandro, Westra, Phil, Sammons, R Douglas

“…BACKGROUND Precise quantification of the fitness cost of synthetic auxin resistance has been impeded by lack of knowledge about the genetic basis of resistance…”
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Investigating the presence of compensatory evolution in dicamba resistant IAA16 mutated kochia (Bassia scoparia) by Wu, Chenxi, Paciorek, Marta, Liu, Kang, LeClere, Sherry, Perez‐Jones, Alejandro, Westra, Phil, Sammons, R Douglas

“…BACKGROUND Lack of fitness costs has been reported for multiple herbicide resistance traits, but the underlying evolutionary mechanisms are not well…”
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Glyphosate resistance in Ambrosia trifida: Part 1. Novel rapid cell death response to glyphosate by Van Horn, Christopher R, Moretti, Marcelo L, Robertson, Renae R, Segobye, Kabelo, Weller, Stephen C, Young, Bryan G, Johnson, William G, Schulz, Burkhard, Green, Amanda C, Jeffery, Taylor, Lespérance, Mackenzie A, Tardif, François J, Sikkema, Peter H, Hall, J Christopher, McLean, Michael D, Lawton, Mark B, Sammons, R Douglas, Wang, Dafu, Westra, Philip, Gaines, Todd A

“…BACKGROUND Glyphosate‐resistant (GR) Ambrosia trifida is now present in the midwestern United States and in southwestern Ontario, Canada. Two distinct GR…”
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Evaluation of glyphosate resistance in Arabidopsis thaliana expressing an altered target site EPSPS by Sammons, R Douglas, You, Jinsong, Qi, Youlin, Flasinski, Stanislaw, Kavanaugh, Christina, Washam, Jeannie, Ostrander, Elizabeth, Wang, Dafu, Heck, Greg

“…BACKGROUND Glyphosate‐resistant goosegrass has recently evolved and is homozygous for the double mutant of EPSPS (T102I, P106S or TIPS). These same mutations…”
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Glyphosate - How it Became a Once in a Hundred Year Herbicide and Its Future by Duke, Stephen O., Powles, Stephen B., Sammons, R. Douglas

“…More than a decade ago we termed glyphosate a "once in a century herbicide". We designated glyphosate with this distinction in 2008 even though we were only 60…”
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A speciation model of essential trace metal ions in phloem by Harris, Wesley R., Sammons, R. Douglas, Grabiak, Raymond C.

“…Phloem sap is the nutrient rich fluid that transports sugars, amino acids and metal ions from leaves to other parts of the plant. A computer model for the…”
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Glyphosate efficacy is contributed by its tissue concentration and sensitivity in velvetleaf ( Abutilon theophrasti) by Feng, Paul C.C., Chiu, Tommy, Douglas Sammons, R.

“…Glyphosate efficacy was examined in young velvetleaf plants from the standpoint of its tissue distribution and sensitivity. In whole plant assays, manual…”
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Computer Simulation of the Interactions of Glyphosate with Metal Ions in Phloem by Harris, Wesley R, Sammons, R. Douglas, Grabiak, Raymond C, Mehrsheikh, Akbar, Bleeke, Marian S

“…Essential nutrients such as trace metal ions, amino acids, and sugars are transported in the phloem from leaves to other parts of the plant. The major…”
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In Vivo ³¹P-Nuclear Magnetic Resonance Studies of Glyphosate Uptake, Vacuolar Sequestration, and Tonoplast Pump Activity in Glyphosate-Resistant Horseweed by Ge, Xia, d'Avignon, D. André, Ackerman, Joseph J.H., Sammons, R. Douglas

“…Horseweed (Conyza canadensis) is considered a significant glyphosate-resistant (GR) weed in agriculture, spreading to 21 states the United States and now found…”
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Investigations into glyphosate-resistant horseweed (Conyza canadensis): retention, uptake, translocation, and metabolism by Feng, Paul C. C., Tran, Minhtien, Chiu, Tommy, Douglas Sammons, R., Heck, Gregory R., CaJacob, Claire A.

“…The mechanism of glyphosate resistance in horseweed was investigated. Eleven biotypes of putative sensitive (S) and resistant (R) horseweed were obtained from…”
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Novel software package for cross-platform transcriptome analysis (CPTRA) by Zhou, Xin, Su, Zhen, Sammons, R Douglas, Peng, Yanhui, Tranel, Patrick J, Stewart, Jr, C Neal, Yuan, Joshua S

“…Next-generation sequencing techniques enable several novel transcriptome profiling approaches. Recent studies indicated that digital gene expression profiling…”
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Sustainability and Stewardship of Glyphosate and Glyphosate-resistant Crops by Sammons, R. Douglas, Heering, David C, Dinicola, Natalie, Glick, Harvey, Elmore, Greg A

“…The significance of glyphosate and the appearance of glyphosate-resistant weeds have raised concerns about glyphosate sustainability. Resistance-prevention…”
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