#Heat Stress

Marathon des Sables 2021 35th Edition Summary and Thoughts

The 2021, 35th edition of the Marathon des Sables concluded early October after a 2.5-year hiatus due to the ongoing Covid pandemic issues worldwide. Three postponements, the first in April 2020, a second cancellation late 2020 and then a 3rd cancellation in April 2021 finally saw the race take place in October. October was selected due to climatic conditions typically being very similar to those of April. Little did we know that October would see freakish high temperatures that would impact on the race.
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Heat-stress-induced sprouting and differential gene expression in growing potato tubers: Comparative transcriptomics with that induced by postharvest sprouting

Crops face increased risk from heat stress due to climate change. Potato (Solanum tuberosum L.) tubers grown in hot summers often have defects including pre-harvest sprouting ("heat sprouts"). We have used 18 potato cultivars to investigate whether heat stress (HS) conditions alone could cause heat sprouting and dormancy changes in tubers. We also examined transcriptomic responses of potato to HS and whether these responses are like those induced by postharvest sprouting. We demonstrated that HS alone caused heat sprouts and shortened postharvest dormancy period, heat-sprouted tubers became dormant after harvest, and cultivars varied substantially for producing heat spouts but there was no clear association with cultivar maturity earliness. Cultivar Innovator did not show any heat sprouts and still had long dormancy. Dormancy-associated genes (DOG1 and SLP) were downregulated in HS tubers like in postharvest sprouting tubers. We have identified 1201 differentially expressed genes, 14 enriched GO terms and 12 enriched KEGG pathways in response to HS in growing tubers of 'Russet Burbank'. Transcriptomic response of 'Russet Burbank' to HS showed significant similarities to that of postharvest non-HS sprouted tubers. Gibberellin biosynthesis pathway was enriched in heat-stressed tubers and was likely involved in heat sprouting and dormancy release. Heat sprouting and postharvest sprouting shared common candidate genes and had significant similarity in gene expression. Our study has significance for selecting potato cultivars for farming, planning storage and utilization of heat-stressed tubers, identifying sprouting-related genes, understanding heat-stress biology, and breeding heat-tolerant potato cultivars, especially for sustainable potato production under climate change.
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Genetic Engineering News

Study Finds Maternal Stress Influences Offspring through Heritable Epigenetic Memory

Studies in roundworms by biologists at the University of Iowa suggest that a mother’s response to stress can influence her children and her grandchildren, through heritable epigenetic changes. Their research, reported in Molecular Cell, demonstrated that roundworm mothers subjected to heat stress passed—under certain conditions—the legacy of that stress exposure not only to their offspring but, if the period of stress to which the mother was exposed was long enough, even to their offspring’s children.

Feds, state both looking to protect workers from extreme heat

Policy, politics and progressive commentary Heat is the nation’s leading cause of weather-related deaths, and heat waves are becoming more intense and more frequent as the planet warms, especially in the Southwest.  Now the Biden administration is planning to implement new federal measures to keep workers safe from extreme heat after unprecedented heat waves in the Pacific Northwest left hundreds […] The post Feds, state both looking to protect workers from extreme heat  appeared first on Nevada Current.

Coalition combats industrial heat stress on eight workplace fronts

New National Heat Safety Coalition (NHSC) recommendations span eight areas that participants cite as key to keeping workers in industrial environments safe: heat hygiene and acclimatization; hydration; environmental monitoring; physiological monitoring; body cooling; textiles and personal protective equipment; plus, emergency action plans and implementation. The country’s first heat safety recommendations...

McCarthy Building Companies Pilots Wearable Hi-Tech for Worker Safety

Perennially recognized as one of America’s safest builders, McCarthy Building Companies, Inc. is partnering with Kenzen to pilot wearable heat monitoring technology on multiple construction projects. Kenzen’s smart PPE devices monitor the heat status of workers in hot and humid conditions, helping predict and prevent heat stress and illness. Together, the organizations will gain valuable insight into how the technology can minimize the risk of heat illness and protect the broader construction workforce.

American Society of Safety Professionals Forms Policy Statements on Heat Stress and Pandemic

ASSP maintains data-driven and solutions-based positions on issues that impact occupational safety and health. ASSP has developed new policy statements on anticipated federal standards related to heat stress and COVID-19 as it aims to inform government officials and key stakeholders in improving the regulatory approach to workplace safety and health.

Mother ?? s stress was planted in future generations

It’s like a change in the temperature of the mother’s roundworm (which can be harmful or even fatal to the animal) and her reaction to it. In addition, they also. “Genes have a” memory “of past environmental conditions that affect their expression even after these conditions have changed. It is not how this “memory” is established and persists past fertilization, embryonic development, and after the embryo has grown into an adult. This is because during embryogenesis, most organisms usually reset changes made to a gene due to past activity of the gene. ” Veena Prahlad, associate professor of biology and aging mind and brain initiatives that led the study, says.

Contractor Pilots Heat Safety PPE

Although temperatures may be cooling as fall takes hold in much of the country, there are still regions and job sites where workers continue to face heat-related safety risks. From 1992 through 2017, there were 70,000 serious injuries and 815 deaths caused by exposure to excessive heat, according to the Bureau of Labor Statistics.

Protein linked to oxidative stress and related diseases

Scientists at Monash University's Biomedicine Discovery Institute (BDI) have discovered a new role for a known protein in oxidative stress, which is linked to diseases such as Alzheimer's and Parkinson's, diabetes, cardiovascular diseases, viral infection and cancer. When cells are stressed they get damaged; the cell can then either repair...

'Extreme heat' days have tripled since 1980s, and more are coming

Urban dwellers around the globe are sweating through three times as many "extreme heat" days as their counterparts did in the 1980s, a new study suggests. The study is the latest to chart humans' growing exposure to dangerously high temperatures. Experts said it looked at what's happening in finer detail than previous research has—and it suggests that exposure to extreme heat is more widespread than thought.
Scientific American

Risk of Dangerous Heat Exposure Is Growing Quickly in Cities

Cities are famously sweltering places during heat waves, with pavement and buildings radiating heat back into the air and elevating temperatures compared to nearby rural areas. Add in global warming and an increasingly urban population, and you have a recipe for quickly ratcheting up the number of humans exposed to health-endangering heat. This exposure has tripled in recent decades—a faster rise than previous research suggested—a new study finds.