Watch now: Pennycress evolution could be game-changer for agriculture, climate – Bloomington Pantagraph

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A unique cover crop paves the way to new profits for U.S. farmers.

David Proeber

BLOOMINGTON — A weed that Central Illinoisans see along roadways, at the edges of fields or at construction sites has been domesticated in Central Illinois into a crop that researchers say has the potential to help combat climate change and provide additional income to farmers.The high-protein seed oil that derives from the pennycress plant, with genetic modifications, has a plethora of environmental positives. It can be converted to biofuels for airplanes, feedstock, detergents, lubricants and more.

Volunteer pennycress comes up in a soybean field at the ISU Farm. The cover crop is one of the most promising plants being studied to make farmers a little money between seasons.

DAVID PROEBER, THE PANTAGRAPH

Agronomists and geneticists at Illinois State University, Western Illinois University and the University of Minnesota, with help from other institutions and the U.S. Department of Agriculture, are working to convince farmers that the genetically-modified version of pennycress, dubbed covercress, is a worthwhile plant that can be a cover crop and a second cash crop for farmers to grow from the fall until spring.It would act as any other cover crop that absorbs and stores precious nutrients in the winter, said ISU professor of soil science Rob Rhykerd, “but the cool thing about pennycress is that we can use the seed to help produce these renewable fuels.”“This can be a multi-billion-dollar a year new crop here when it gets established,” said Dr. John Sedbrook, ISU professor of genetics.
Sedbrook was a leader in modifying pennycress’ DNA to allow its seed oil to become identical to canola oil using a technology called CRISPR gene editing.He said most of the credit goes to Terry Isbell, a researcher at the USDA Agricultural Research Service in Peoria, who noticed pennycress growing alongside the road and thought to research its viabilities as an alternative crop.

A core of a soil sample is measured as researchers study pennycress at the ISU Farm.

DAVID PROEBER, THE PANTAGRAPH

“Essentially it’s been sitting on the sidelines waiting to be a crop and we’ve just helped it along here,” Sedbrook said. “Just as a weed, it’s got agronomic traits that are quite attractive. It produces a lot of seeds and those seeds have about 33% oil content and about 20% protein, so just as a weed it has a good start.”The genetic modifications reduced the seed’s fiber content, which increased its oil and protein contents further and allowed it to become edible. It resulted in a more golden-colored seed, compared to the weed’s dark brown seeds.

CHICAGO — Illinois health care workers and educators from kindergarten through college will be required to be vaccinated against COVID-19 or s…

Sedbrook said he used a similar method from the 1960s that converted rapeseed into canola oil, but with newer technology. Two important steps contributed to the conversion: a mutation that reduced erucic acid content in the oil, making the oil edible, and another that reduced glucosinolate content, which is a defense compound that gives the protein and oil a bitter taste, he said.At the same time, investors in St. Louis realized this change in the pennycress plant and began a startup company called CoverCress, which is working to commercialize the new plant derived from pennycress, now called covercress.The company will have its soft commercial launch this fall for the first-generation covercress crop in Arenzville, about 50 miles west of Springfield.The initial crop will be used to feed poultry.Along with venture capital money CoverCress has received, ISU and the partnering universities received two five-year grants: $10 million from the USDA and $13 million from the U.S. Department of Energy.

Illinois State University masters degree candidate Bethany Wohrley of Mendota, left, and Professor Rob Rhykerd pull soil samples from a soybean field that had previously been planted with pennycress, foreground, at the ISU Farm. The samples will help determine what levels of nutrients are taken up and released from the cover crop.

DAVID PROEBER, THE PANTAGRAPH

Sedbrook said the USDA grant’s goal is to help commercialize the crop and the DOE grant is designed to develop the subsequent generations of the crop.Environmental benefitsThe DOE grant also aims to improve the crop’s stress resilience.“You know from climate change here the weather is just all over the place. This is a weird summer,” Sedbrook said, pointing to the high rainfalls and cooler weather in Central Illinois, a drought in Minnesota, and the heat dome and wildfires in the Pacific Northwest.“The goal we have is to find genetics that will improve the stress resilience so that covercress the crop can handle these big swings in weather. This is going to be an ongoing project,” Sedbrook said.Not only will the seed’s oil be used for biofuels to help combat climate change, but the crop itself can help capture carbon dioxide from the atmosphere and absorb nitrates and phosphates in agricultural runoff.After fall harvesting, bits of chemicals applied throughout the growing season — especially nitrogen and phosphorus — are left over in the field.Cover crops are planted during fall to absorb the leftover nutrients and store them throughout the winter into spring, stopping them from leaching into surface waterways. Those nutrients held in the cover crop then act as another fertilizer for the next season’s crop — usually corn or soybeans.Covercress also will help increase the soil’s organic matter and fertility, and reduce erosion.“When a rain drop hits bare soil surface, it detaches soil particles, and then if you get more water coming down running off the field, it’ll erode the soil,” Rhykerd said.But if a plant is there instead, the vegetation absorbs the rain drop’s energy and the water trickles into the soil rather than washing off the surface and taking soil with it.Farmer interestA University of Tennessee study surveyed farmers and found that about 58 percent of them were interested in growing covercress if it is profitable.Farmers’ concerns about growing the crop lay within the lack of knowledge of how to grow covercress, as well as the use of no-till practices, which require mechanical agitation of the soil.The study said the tipping point at which growing the crop becomes more appealing to farmers is at about 1,500 pounds of seed per acre, which would come out to be about $75 per acre.Rhykerd said it has been difficult to get farmers to buy in to growing the new crop. He said ISU has field days at its farm in Lexington to attract and educate farmers about it.“So far I would say it’s been slow,” Rhykerd said. “I think demonstrating that pennycress can be profitable will really help.”Sedbrook said the USDA project, called IPREFER, includes education and outreach efforts. He said they have booths set up at different county fairs.He said after CoverCress’s soft launch this fall, the company plans to expand and begin extracting oil from the crop’s seed for future development.“Within two or three years they want to be on over 10 to 20,000 acres and keep growing from there,” Sedbrook said. “It’s a process to get it established, but the market is there, so there certainly is incentive to get this to work.”

Photos: Cardinals fans, players battle scorching heat in and around Busch Stadium

One Cardinal Way pool

Nida Dogan lounges in the water with her boyfriend Caleb Davis as they stay cool in the pool at One Cardinal Way watching the St. Louis Cardinals play the Detroit Tigers at Busch Stadium in St. Louis on Wednesday, Aug. 25, 2021. "Nothing beats being in a pool to watch the Cardinals" says Davis who has lived in the building for about six months. Wednesday's sweltering heat and humidity are expected to continue into the weekend. The Cardinals defeated the Tigers 3-2 in extra innings. One Cardinal Way is currently 100% leased but management says they expect some openings for new tenants in the fall, beginning in September. Photo by David Carson, [email protected]

David Carson

One Cardinal Way pool

Giovanni Smith (center) and Tracy Winka hang out in the water as they stay cool in the pool at One Cardinal Way watching the St. Louis Cardinals play the Detroit Tigers at Busch Stadium in St. Louis on Wednesday, Aug. 25, 2021. . Wednesday's sweltering heat and humidity are expected to continue into the weekend. The Cardinals defeated the Tigers 3-2 in extra innings. One Cardinal Way is currently 100% leased but management says they expect some openings for new tenants in the fall, beginning in September. Photo by David Carson, [email protected]

David Carson

Cooling off at the game

Ellie Rosser, 8, places a wet towel on her head to cool off during a baseball game between the St. Louis Cardinals and the Detroit Tigers on Wednesday, Aug. 25, 2021, at Busch Stadium in St. Louis. Photo by Laurie Skrivan, [email protected]

Laurie Skrivan

Trying to keep cool

"It is HOT," said Nick Maberry of Bethalto, Illinois, who cools down with a wet towel during the sixth inning of baseball game between the St. Louis Cardinals and the Detroit Tigers on Wednesday, Aug. 25, 2021, at Busch Stadium in St. Louis. Photo by Laurie Skrivan, [email protected]

Laurie Skrivan

Enduring the heat

A lone St. Louis Cardinal fan endures the heat in the center field bleachers during the ninth inning of baseball game between the St. Louis Cardinals and the Detroit Tigers on Wednesday, Aug. 25, 2021, at Busch Stadium in St. Louis. Photo by Laurie Skrivan, [email protected]

Laurie Skrivan

St. Louis Cardinals V Detroit Tigers

St. Louis Cardinals fans Deb Somerville, left, and Phoebe Ryan cool down using portable spray fans during a baseball game between the St. Louis Cardinals and the Detroit Tigers on Wednesday, Aug. 25, 2021, at Busch Stadium in St. Louis. Photo by Laurie Skrivan, [email protected]

Laurie Skrivan

St. Louis Cardinals V Detroit Tigers

St. Louis Cardinals starting pitcher Jon Lester (31) cools down in the dugout during the fourth inning of a baseball game between the St. Louis Cardinals and the Detroit Tigers on Wednesday, Aug. 25, 2021, at Busch Stadium in St. Louis. Photo by Laurie Skrivan, [email protected]

Laurie Skrivan

St. Louis Cardinals starting pitcher Jon Lester cools off

St. Louis Cardinals starting pitcher Jon Lester (31) cools down in the dugout during the fourth inning of a baseball game between the St. Louis Cardinals and the Detroit Tigers on Wednesday, Aug. 25, 2021, at Busch Stadium in St. Louis. Photo by Laurie Skrivan, [email protected]

Laurie Skrivan

Fire department offers cool down on a steamy day

Army Sgt. Marcus Compton cools down with a nozzle spray from the St. Louis Fire Department's Engine 14 outside Busch Stadium before the Cardinals game against the Detroit Tigers on Wednesday, Aug. 25, 2021. Compton works at the Army recruiting station in Fairview Heights. Photo by Robert Cohen, [email protected]

Robert Cohen

Fire department offers cool down on a steamy day

Jeff Roberts of Columbia, Mo. cools down with a nozzle spray from the St. Louis Fire Department's Engine 14 outside Busch Stadium before attending the Cardinals game against the Detroit Tigers on Wednesday, Aug. 25, 2021. Roberts, living in between Kansas City and St. Louis, attends numerous Royals and Cardinals games during the season. Photo by Robert Cohen, [email protected]

Robert Cohen

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