科学与环境
Researchers highlight ferroptosis's dual roles in plant immunity
来源: Phys.org - latest science and technology news stories · 发布于
When plants encounter pathogens, they can defend themselves by rapidly killing infected cells to restrict pathogen spread. This immune response, known as the hypersensitive response (HR), was first described in 1915. However, the molecular mechanism underlying HR cell death remai
When plants encounter pathogens, they can defend themselves by rapidly killing infected cells to restrict pathogen spread. This immune response, known as the hypersensitive response (HR), was first described in 1915. However, the molecular mechanism underlying HR cell death remained poorly understood for more than a century.
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Historic duck DNA traces wild mallard genetic changes to more than a century of releases
Researchers have long known that releasing domesticated ducks can alter wild populations. Now, a study led by a doctoral student at The University of Texas at El Paso has documented, for the first time in North America, when and where these genetic changes took place and tied the
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Fractal patterns reveal hidden limits to AI predictability
Researchers at the University of Sydney have identified a fundamental mathematical reason why artificial intelligence systems can learn different behaviors even when trained under almost identical conditions, a discovery that could help improve the reliability and trustworthiness
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Scientists reveal how cosignaling receptors dually regulate T cell activation via phase separation
Previous studies have shown that upon antigen stimulation, the T cell receptor (TCR) undergoes phase separation with the kinase Lck to mediate rapid T cell activation. However, the manner in which costimulating receptors regulate this process has remained unclear.
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Permanent daylight saving time has a dark side, scientists warn
A new study warns that permanent daylight saving time could force American children to make at least 2 billion additional school commutes in darkness, potentially increasing safety risks and disrupting their biological clocks. Researchers found that fatal crashes involving school
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Kids who eat more ultra-processed foods show a troubling brain response
A new study suggests that ultra-processed foods may influence children's developing brains in ways that encourage weight gain. Researchers from USC studied 46 children ages 7 to 10 and found that those who ate more ultra-processed foods showed stronger activity in the brain's rew
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