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100-million-year-old molecular 'bypasses' may have helped grasses dominate landscapes and agriculture

Phys · · 759 words · By University
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What to know about 100-million-year-old molecular 'bypasses' may have helped grasses dominate landscapes and agriculture

Researchers from the University of Wisconsin–Madison and their collaborators have identified molecular 'bypasses' in the chemical pathways of grasses that allow for more efficient production of lignin and starch. By comparing grass genomes with those of their closest relatives, the study suggests these evolutionary adaptations contributed to the dominance of grasses in nature and their utility in agriculture.

Propaganda risk 0%
Claims checked 10
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center75%
Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

100-million-year-old molecular 'bypasses' may have helped grasses dominate landscapes and agriculture Gaby Clark Scientific Editor Robert Egan Senior Editor 100 million years ago, long before human intervention, ancestors of grasses, including wheat, rice and…

Why it matters

These more efficient pathways could explain why grass plants are so successful in nature and agriculture, according to a new paper published in Science on Aug.

Common ground

20 by researchers from the University of Wisconsin–Madison and their collaborators.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from the University of Wisconsin–Madison and their collaborators have identified molecular 'bypasses' in the chemical pathways of grasses that allow for more efficient production of lignin and starch. By comparing grass genomes with those of their closest relatives, the study suggests these evolutionary adaptations contributed to the dominance of grasses in nature and their utility in agriculture.

open_in_new Read the original article: https://phys.org/news/2026-08-million-year-molecular-bypasses-grasses.html

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0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 4
help Insufficient Evidence 4
verified Verified By Reference 1
info Single Source 1
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Claim 1: “this unique feature of grasses, capable of synthesizing lignin by two routes, evolved even before grasses existed”
CORROBORATED
Two independent sources (UGA Research News and another web result) confirm that the dual lignin biosynthesis pathway evolved before grasses existed.
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web search NEUTRAL — Lignin constitutes 30% of terrestrial non-fossil organic carbon[5] on Earth, and 20 to 35% of the dry mass of wood.[6]. Lignin is present in red algae, which suggest that the common ancestor of plants…
https://en.wikipedia.org/wiki/Lignin
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web search NEUTRAL — “We thought that the ability to synthesize lignin through two biochemical routes was a unique feature of grasses, but our whole genome analyses and follow-up experiments revealed that the dual lignin …
https://research.uga.edu/news/grass-plant-ancestors-evolved-…
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web search NEUTRAL — “It turned out, this unique feature of grasses, capable of synthesizing lignin by two routes, evolved even before grasses existed”, Maeda says.
https://www.eurekalert.org/news-releases/1139889
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Claim 2: “Grasses and cereal grains make up the majority of global human caloric intake.”
CORROBORATED
Multiple independent sources confirm that cereal grains (grasses) like wheat, rice, and corn make up the majority of global human caloric intake.
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web search NEUTRAL — Grasses and cereal grains make up the majority of global human caloric intake.Grasses are rich in starch, a complex carbohydrate that acts as the plant’s energy storage, and their rapid growth require…
https://biology.wisc.edu/2026/08/20/molecular-bypasses-impro…
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web search NEUTRAL — The majority of human calories come from cereal grains, notably wheat, rice, and corn, due to their high carbohydrate content. These grains serve as staples in many diets around the world, providing e…
https://brainly.com/question/45387722
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web search NEUTRAL — The overwhelming majority of global staple foods are grains. Corn, rice, and wheat together make up 51% of the world’s caloric intake. Below is a look at these important food staples.
https://www.worldatlas.com/articles/most-important-staple-fo…
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Claim 3: “the researchers revealed that Joinvillea has only one pathway to create starch. All grasses, though, have two.”
INSUFFICIENT EVIDENCE
No evidence was provided in the search results to confirm the specific number of starch pathways in Joinvillea versus grasses.
help
Claim 4: “Yuri Takeda-Kimura et al, Genomes of Poaceae sisters reveal key metabolic innovations preceding the evolution of grasses, Science (2026). DOI: 10.1126/science.adv0443”
INSUFFICIENT EVIDENCE
No evidence was provided to verify the specific paper title, author, date (2026), or DOI mentioned in the claim.
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Claim 5: “ancestors of grasses, including wheat, rice and maize, developed "bypasses" in chemical pathways used to create two critical compounds: lignin and starch”
CORROBORATED
Multiple web search results confirm that ancestors of grasses developed molecular 'bypasses' for the synthesis of both lignin and starch.
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web search NEUTRAL — Molecular 'bypasses' improve grass plants's synthesis of lignin and starch, laying the early groundwork for evolutionary success. Scientists examined the genome of Joinvillea, a close relative of gras…
https://phys.org/news/2026-08-million-year-molecular-bypasse…
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web search NEUTRAL — This means that an additional starch synthesis pathway, or a bypass route, emerged at the common ancestor of all grasses and now allows grasses to produce double the amount of energy than Joinvillea a…
https://www.eurekalert.org/news-releases/1139889
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web search NEUTRAL — Lignin is present in red algae, which suggest that the common ancestor of plants and red algae may have been pre-adapted to synthesize lignin.Lignin biosynthesis begins in the cytosol with the synthes…
https://en.wikipedia.org/wiki/Lignin
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Claim 6: “an additional starch synthesis pathway, or bypass route, emerged in the common ancestor of all grasses”
CORROBORATED
Two independent web search results explicitly state that an additional starch synthesis pathway (bypass route) emerged in the common ancestor of all grasses.
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web search NEUTRAL — Starch is a carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage.
https://en.wikipedia.org/wiki/Starch
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web search NEUTRAL — This means that an additional starch synthesis pathway, or bypass route, emerged in the common ancestor of all grasses and now allows grasses to produce twice the amount of energy as Joinvillea and ot…
https://phys.org/news/2026-08-million-year-molecular-bypasse…
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web search NEUTRAL — “Some of the duplicated genes then enabled the evolution of an additional starch synthesis pathway, or a bypass route, which emerged in an early common ancestor of all grasses.”
https://research.uga.edu/news/grass-plant-ancestors-evolved-…
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Claim 7: “both grasses and Joinvillea had two pathways for lignin synthesis.”
INSUFFICIENT EVIDENCE
No evidence was provided to confirm whether both grasses and Joinvillea had two pathways for lignin synthesis.
verified
Claim 8: “Joinvillea ascendens... is found in wet forests on South Pacific islands”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of irrelevant search results about Keynesian economics and general Hawaiian endemism. No evidence specifically confirming the location of Joinvillea ascendens was found in the provided snippets.
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wikipedia NEUTRAL — Endemism in the Hawaiian Islands refers to the fact that the islands are home to a large number of endemic species unique to the archipelago. Located nearly 2,400 miles (about 3,900 km) from the neare…
https://en.wikipedia.org/wiki/Endemism_in_the_Hawaiian_Islan…
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wikipedia NEUTRAL — The commelinids are a group of 29 interrelated families of flowering plants, named for one of the four included orders, Commelinales. This subgroup of the monocots accounts for most of the global agri…
https://en.wikipedia.org/wiki/List_of_commelinid_families
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web search NEUTRAL — Mar 9, 2023 · Abstract The study examines Keynes's consumption function in order to determine how consumers adjust to consumption expenditure due to variation in income.
https://www.researchgate.net/publication/385751608_AN_EMPIRI…
+ 2 more evidence sources
help
Claim 9: “We found two mutations in their DNA that are critical and sufficient to create this new bypass pathway”
INSUFFICIENT EVIDENCE
No evidence was provided regarding specific DNA mutations critical for the lignin bypass pathway.
info
Claim 10: “a new paper published in Science on Aug. 20 by researchers from the University of Wisconsin–Madison and their collaborators”
SINGLE SOURCE
While the University of Wisconsin-Madison and the journal Science are verified entities, the specific date of August 20 and the specific collaboration for this paper are not corroborated by the provided evidence snippets. One search result mentions a paper in Science (doi: 10.1126/science.adk5081), but it doesn't explicitly link the date and the specific UW-Madison collaboration in the snippet.
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wikipedia NEUTRAL — Madison is the capital of the U.S. state of Wisconsin. It is the second-most populous city in the state (after Milwaukee), with a population of 269,840 at the 2020 census. The Madison metropolitan are…
https://en.wikipedia.org/wiki/Madison,_Wisconsin
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wikipedia NEUTRAL — The University of Wisconsin–Madison (University of Wisconsin, Wisconsin, UW, UW–Madison, or simply Madison) is a public land-grant research university in Madison, Wisconsin, United States. It was foun…
https://en.wikipedia.org/wiki/University_of_Wisconsin–Madiso…
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wikipedia NEUTRAL — The University of Wisconsin–Madison Arboretum is a teaching and research facility of the University of Wisconsin–Madison and the site of historic research in ecological restoration. In addition to its…
https://en.wikipedia.org/wiki/University_of_Wisconsin–Madiso…
+ 3 more evidence sources
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.