PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Glyphosphate: a silver-bullet weed killer no more

2023-12-05
(Press-News.org) For decades, corn and soy farmers have heavily relied on one herbicide: glyphosate. Crops bred to resist glyphosate have been extremely successful, with over 90% of corn and soy hectares planted with glyphosate-resistant varieties by 2014. But as Christopher Landau and colleagues document, the chemical was not quite the “silver bullet” it was promised to be. With an entire industry using the same chemical—the US and Canada alone apply more than 130 million kg annually—evolutionary selection pressures on weed plants have been intense. Since 1996, there have been 354 confirmed cases of glyphosate resistance in 57 weed species around the world. The authors compiled herbicide evaluation trials from 24 institutions across the US and Canada from 1996 to 2021. The analysis was restricted to the seven species that had more than 50 observations from three or more locations: Abutilon theophrasti Medik. (Velvetleaf), Amaranthus palmeri (Palmer amaranth), Amaranthus tuberculatus (waterhemp), Ambrosia artemisiifolia L. (common ragweed), Ambrosia trifida L. (giant ragweed), Chenopodium album (common lambsquarters), and Erigeron canadensis (horseweed). Over time, weed control declined and variability of control increased for glyphosate used after crops emerged from the soil. However, fields treated with both post emergence glyphosate and an effective pre-emergence herbicide applied before crops sprouted did not show control declines or variability increases. According to the authors, the result highlights the need for diversity in weed management programs to provide high and consistent weed control.

END


ELSE PRESS RELEASES FROM THIS DATE:

Blue light exposure and aging

Blue light exposure and aging
2023-12-05
In a study on fruit flies, daily low-intensity blue light exposure (BLE), similar to that experienced daily by billions of humans in the form of LED lighting and device screens, changed flies at the sub-cellular level, affecting processes related to aging and circadian rhythms. Xiaoyun Wang and colleagues exposed fruit flies (Drosophila melanogaster) to different durations of daily low-intensity BLE and then analysed the consequences to the cellular makeup of the insects, as compared to flies raised in darkness. The authors paid particular attention to ...

Toxicity at Wikipedia

2023-12-05
A study links hostility on Wikipedia to lost productivity on the site. Wikipedia, the largest reference work ever created, is written and edited by tens of thousands of volunteers, known as Wikipedians. Despite the fact that anyone can edit any page, studies show that Wikipedia is generally a reliable source of information. Ivan Smirnov and colleagues studied how the volunteer labor that keeps the site working is affected by hostile comments in the “user talk” pages connected to each editor. Toxic comments were identified by a toxicity detection algorithm devised by the Perspective API ...

Reliable research and evidence-based recommendations scarce for women who exercise according to menstrual cycle

Reliable research and evidence-based recommendations scarce for women who exercise according to menstrual cycle
2023-12-05
Hamilton, ON, December 5, 2023 – There is no shortage of advice for women on what to eat, how to train, or what supplements to take during their menstrual cycles, but a new review by an international team of scientists has found little evidence to support such recommendations. In fact, they found sparse research on women and exercise at all, and even less on the effect of their periods on sports performance, physiology, or physical fitness. The authors of the paper, from McMaster University, Manchester Metropolitan University and the Australian Catholic University in Melbourne, are calling for much more high quality, standardized research ...

New Alzheimer Europe publication highlights continuing inequalities in access to dementia care and treatment across Europe

New Alzheimer Europe publication highlights continuing inequalities in access to dementia care and treatment across Europe
2023-12-05
Brussels, 5 December 2023 – In a report launched today at a lunch debate hosted by Deirdre Clune MEP (Ireland), Alzheimer Europe highlighted the continuing inequalities in access to dementia care and treatment across Europe. The objective of the report entitled “European Dementia Monitor” was to provide a benchmark of national dementia policies in order to compare and rate the responses of European countries to the dementia challenge. The survey covered all Member States of the European Union (with the exception of Latvia), as well as Armenia, Iceland, Israel, Jersey, North Macedonia, Norway, Serbia, Switzerland, Turkey, United ...

Both virtual and in-person nutrition visits help to lower cholesterol, study finds

2023-12-05
Despite an end to the national public health emergency in May 2023, the use of telehealth remains high, with over 20% of American adults taking appointments online. These visits include video calls with registered dietitian nutritionists, who have a critical role in helping patients take on lifestyle changes through medical nutrition therapy. With a focus on the changing digital landscape, researchers at Michigan Medicine found that telemedicine patients with hyperlipidemia — an excess of cholesterol or fats in the blood ...

USC Norris Cancer Hospital earns Leapfrog Top Teaching Hospital award for third year in a row

USC Norris Cancer Hospital earns Leapfrog Top Teaching Hospital award for third year in a row
2023-12-05
LOS ANGELES —  The Leapfrog Group, a national hospital watchdog organization, has named USC Norris Cancer Hospital a 2023 Top Teaching Hospital. This is the third year in a row the hospital has received this distinction.   “I am incredibly proud that once again, USC Norris Cancer Hospital ranked among the top hospitals in the country,” said Marty Sargeant, MBA, CEO of USC Norris Cancer Hospital and Keck Hospital of USC. “This prestigious honor reflects our rigorous safety and quality standards and our continuous commitment to our ...

Exposure to soft robots decreases human fears about working with them

Exposure to soft robots decreases human fears about working with them
2023-12-05
VANCOUVER, Wash. – Seeing robots made with soft, flexible parts in action appears to lower people’s anxiety about working with them or even being replaced by them. A Washington State University study found that watching videos of a soft robot working with a person at picking and placing tasks lowered the viewers’ safety concerns and feelings of job insecurity. This was true even when the soft robot was shown working in close proximity to the person. This finding shows soft robots hold ...

Study proposes new explanation for California anchovy booms and busts

Study proposes new explanation for California anchovy booms and busts
2023-12-05
New research from Scripps and NOAA scientists has discovered ecological correlations that could help explain the booms and busts of California’s anchovy population. If the correlations hold up to further research, they could one day help inform management of California’s anchovy fishery and improve conservation. The Northern Anchovy (Engraulis mordax) is a crucial food source for much of California’s most conspicuous marine life – including droves of sea lions, pods of dolphins, lucrative tuna fisheries, and throngs of whales. But one of the hallmarks of the anchovy population off California ...

A new publication in Nature Communications can revolutionize the treatment of Parkinson's patients

2023-12-05
The results are just published in Nature Communications under the title "Enhanced production of mesencephalic dopaminergic neurons from lineage-restricted human undifferentiated stem cells." In the new research findings, DANDRITE group leader and Associate Professor Mark Denham has developed a method that ensures much higher purity of the so-called dopamine cells, which are crucial in connection with Parkinson's disease. "Stem cells offer promising potential for treating Parkinson's disease by transforming into specific nerve cells. However, the precision of this transformation poses a significant challenge with current methods, resulting in low purity," ...

Eye scans provide crucial insights into kidney health, study finds

2023-12-05
3D eye scans can reveal vital clues about kidney health that could help to track the progression of disease, research suggests. The advance could revolutionise monitoring of kidney disease, which often progresses without symptoms in the early stages. Experts say the technology has potential to support early diagnosis as current screening tests cannot detect the condition until half of the kidney function has been lost. Researchers used highly-magnified images to detect changes to the retina – the layer of tissue at the back of the eye that senses light and sends signals to the ...

LAST 30 PRESS RELEASES:

Drug combo cuts risk of death in advanced prostate cancer by 40%

ADC improves outcomes for patients with advanced triple-negative breast cancer who are ineligible for immune checkpoint inhibitors

Novel treatment combination improves progression-free survival in metastatic, estrogen-receptor-positive HER-2-negative breast cancer

ESMO 2025: Trial results show belzutifan shrinks rare neuroendocrine tumors and improves symptoms in patients

ESMO 2025: Dual targeted therapy shows promise in previously treated advanced kidney cancer patients

New generation of Antibody-Drug Conjugates (ADCs) shows unprecedented promise in early-stage disease

Sylvester Cancer Tip Sheet for October 2025

Three science and technology leaders elected to Hertz Foundation Board of Directors

Jump Trading CSO Kevin Bowers elected to Hertz Foundation Board of Directors

Former Inscripta CEO Sri Kosaraju elected to Hertz Foundation Board of Directors

Citadel’s Jordan Chetty elected to Hertz Foundation Board of Directors

McGill research flags Montreal snow dump, inactive landfills as major methane polluters

A lightweight and rapid bidirectional search algorithm

Eighty-five years of big tree history available in one place for the first time

MIT invents human brain model with six major cell types to enable personalized disease research, drug discovery

Health and economic air quality co-benefits of stringent climate policies

How immune cells deliver their deadly cargo

How the brain becomes a better listener: How focus enhances sound processing

Processed fats found in margarines unlikely to affect heart health

Scientists discover how leukemia cells evade treatment

Sandra Shi MD, MPH, named 2025 STAT Wunderkind

Treating liver disease with microscopic nanoparticles

Chemicals might be hitching a ride on nanoplastics to enter your skin

Pregnant patients with preexisting high cholesterol may have elevated CV risk

UC stroke experts discuss current and future use of AI tools in research and treatment

The Southern Ocean’s low-salinity water locked away CO2 for decades, but...

OHSU researchers develop functional eggs from human skin cells

Most users cannot identify AI bias, even in training data

Hurricane outages: Analysis details the where, and who, of increased future power cuts

Craters on surface of melanoma cells found to serve as sites for tumor killing

[Press-News.org] Glyphosphate: a silver-bullet weed killer no more