Uploaded September 2022 | Updated September 2026, 2 weeks ago
In 1997 there were 432 new patents for herbicides, by 2009 there were only 65. The development of broad spectrum glyphosate and “Roundup Ready crops” was a game changer that worked so well people basically stopped looking for new herbicides. That is until the weeds started fighting back.
Chemical & Engineering News article on the search for new modes of action
cen.acs.org/environment/pesticides/crop-protection-herbicide-mode-action-glyphosate/100/i22
Introduction to the Shikimate Pathway
youtube.com/watch?v=FlBrJW-qbXA&list=PL833687AEAAE90961&index=155
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The Chemistry of Poison Ivy
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Credits:
Executive Producer:
Matthew Radcliff
Producers:
Elaine Seward
Andrew Sobey
Darren Weaver
Host:
Alex Dainis
Scientific Consultants:
Mark Loux, PhD
Patrick J. Tranel, PhD
Todd Gaines, PhD
Mithila Jugulam, Ph.D.
Leila Duman, PhD
Brianne Raccor, PhD
Executive in Charge for PBS: Maribel Lopez
Director of Programming for PBS: Gabrielle Ewing
Assistant Director of Programming for PBS: John Campbell
Reactions is a production of the American Chemical Society.
© 2022 American Chemical Society. All rights reserved.
Additional Sources:
Molecular basis for the herbicide resistance of Roundup Ready crops
ncbi.nlm.nih.gov/pmc/articles/PMC1559744
THE SHIKIMATE PATHWAY
annualreviews.org/doi/10.1146/annurev.arplant.50.1.473
Why have no new herbicide modes of action appeared in recent years?
onlinelibrary.wiley.com/doi/10.1002/ps.2333
The Pitfalls of Relating Weeds, Herbicide Use, and Crop Yield: Don't Fall Into the Trap! A Critical Review
frontiersin.org/articles/10.3389/fagro.2020.615470/full
The cost of herbicide resistance
https://crops.extension.iastate.edu/blog/bob-hartzler/cost-herbicide-resistance
Development and Characterization of a CP4 EPSPS-Based, Glyphosate-Tolerant Corn Event
web.archive.org/web/20090319094255/http://crop.scijournals.org/cgi/content/abstract/45/1/329?ijkey=44fad6f377d5b5dfe274484eb51a4c79d0d7ff63&keytype2=tf_ipsecsha
Tyrosine Biosynthesis, Metabolism, and Catabolism in Plants
bit.ly/3CsMiiS
Biosynthesis and Metabolic Fate of Phenylalanine in Conifers
ncbi.nlm.nih.gov/pmc/articles/PMC4942462
Auxin driven indoleamine biosynthesis and the role of tryptophan as an inductive signal in Hypericum perforatum (L.)
ncbi.nlm.nih.gov/pmc/articles/PMC6797091
Finding of No Significant Impact
Animal and Plant Health Inspection Service
Petition for Non-regulated Status for Soybean Line MON 89788 (APHIS 06-178-01p)
aphis.usda.gov/brs/aphisdocs/06_17801p_ea.pdf
Glyphosate resistance: state of knowledge
onlinelibrary.wiley.com/doi/pdf/10.1002/ps.3743
In 1997 there were 432 new patents for herbicides, by 2009 there were only 65. The development of broad spectrum glyphosate and “Roundup Ready crops” was a game changer that worked so well people basically stopped looking for new herbicides. That is until the weeds started fighting back.
Chemical & Engineering News article on the search for new modes of action
cen.acs.org/environment/pesticides/crop-protection-herbicide-mode-action-glyphosate/100/i22
Introduction to the Shikimate Pathway
youtube.com/watch?v=FlBrJW-qbXA&list=PL833687AEAAE90961&index=155
You might also like other Reactions videos:
How Quinine Fights Malaria, and How That Caused* World War One
youtu.be/wnvo53xUxP4
That Fresh Cut Grass Scent is Really a Signal of Distress
youtu.be/suGk8eZyN34
How Can Fertilizer Explode?
youtu.be/-SeT3N3A19c
How Do Hydrangeas Change Colors?
youtu.be/tmCxU8XY_pE
The Chemistry of Poison Ivy
youtu.be/SJEU3PT0O5g
Credits:
Executive Producer:
Matthew Radcliff
Producers:
Elaine Seward
Andrew Sobey
Darren Weaver
Host:
Alex Dainis
Scientific Consultants:
Mark Loux, PhD
Patrick J. Tranel, PhD
Todd Gaines, PhD
Mithila Jugulam, Ph.D.
Leila Duman, PhD
Brianne Raccor, PhD
Executive in Charge for PBS: Maribel Lopez
Director of Programming for PBS: Gabrielle Ewing
Assistant Director of Programming for PBS: John Campbell
Reactions is a production of the American Chemical Society.
© 2022 American Chemical Society. All rights reserved.
Additional Sources:
Molecular basis for the herbicide resistance of Roundup Ready crops
ncbi.nlm.nih.gov/pmc/articles/PMC1559744
THE SHIKIMATE PATHWAY
annualreviews.org/doi/10.1146/annurev.arplant.50.1.473
Why have no new herbicide modes of action appeared in recent years?
onlinelibrary.wiley.com/doi/10.1002/ps.2333
The Pitfalls of Relating Weeds, Herbicide Use, and Crop Yield: Don't Fall Into the Trap! A Critical Review
frontiersin.org/articles/10.3389/fagro.2020.615470/full
The cost of herbicide resistance
https://crops.extension.iastate.edu/blog/bob-hartzler/cost-herbicide-resistance
Development and Characterization of a CP4 EPSPS-Based, Glyphosate-Tolerant Corn Event
web.archive.org/web/20090319094255/http://crop.scijournals.org/cgi/content/abstract/45/1/329?ijkey=44fad6f377d5b5dfe274484eb51a4c79d0d7ff63&keytype2=tf_ipsecsha
Tyrosine Biosynthesis, Metabolism, and Catabolism in Plants
bit.ly/3CsMiiS
Biosynthesis and Metabolic Fate of Phenylalanine in Conifers
ncbi.nlm.nih.gov/pmc/articles/PMC4942462
Auxin driven indoleamine biosynthesis and the role of tryptophan as an inductive signal in Hypericum perforatum (L.)
ncbi.nlm.nih.gov/pmc/articles/PMC6797091
Finding of No Significant Impact
Animal and Plant Health Inspection Service
Petition for Non-regulated Status for Soybean Line MON 89788 (APHIS 06-178-01p)
aphis.usda.gov/brs/aphisdocs/06_17801p_ea.pdf
Glyphosate resistance: state of knowledge
onlinelibrary.wiley.com/doi/pdf/10.1002/ps.3743
