2024-07-03 11:18:44动物植物
入侵的棕色寡妇蜘蛛被发现携带与衣原体相关的新型细菌

Invasive brown widow spiders across three continents were highly infected with a single strain of Rhabdochlamydia, a bacterium that is related to major pathogens of humans and animals, including chlamydia. A bite from these spiders, however, will not infe

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2024-07-03 11:08:18动物植物
研究表明RNA“垃圾”如何控制我们的基因

Researchers at Arizona State University have made a significant advance in understanding how genes are controlled in living organisms. The new study, published in the journal Nucleic Acids Research, focuses on critical snippets of RNA in the tiny, transpa

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2024-07-03 10:55:16动物植物
使用被发现阻碍抗生素耐药性的抗菌肽混合物进行治疗

A common infection-causing bacteria was much less likely to evolve antibiotic resistance when treated with a mixture of antimicrobial peptides rather than a single peptide, making these mixtures a viable strategy for developing new antibiotic treatments.

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2024-07-03 10:43:16动物植物
人类的存在改变了东非豹和鬣狗之间的平衡

Who's stronger? A solitary leopard or cackle of hyenas? And which is best at getting along with humans?

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2024-07-03 10:30:46动物植物
紫外线辐射损伤导致核糖体障碍,导致皮肤细胞早期死亡

In a recent study, researchers at Johns Hopkins Medicine suggest that the cell's messenger RNA (mRNA)—the major translator and regulator of genetic material—along with a critical protein called ZAK—spurs the cell's initial response to UV radiation damag

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2024-07-03 10:16:06动物植物
在南部非洲发现两种新的Psilocybe蘑菇

Two new species of psychoactive mushrooms in the genus Psilocybe have been described from southern Africa, bringing the list to six known species indigenous to Africa. Psilocybe species are among the most well-known and well-studied species of psychoactiv

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2024-07-03 00:05:40动物植物
揭示马铃薯枯萎病病原体的起源和全球传播

A new study challenges the common theory that the devastating potato blight pathogen Phytophthora infestans originated in Mexico. Researchers meticulously reconstructed its global migration history and found it likely originated in the South American Ande

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2024-07-02 23:53:30动物植物
无人机技术有助于夏威夷原住民鱼塘的恢复和复原

Scientists and kiaʻi loko (fishpond practitioners) have a new tool to aid their efforts to restore and ensure the resilience of Native Hawaiian fishponds. Researchers from the University of Hawai'i (UH) and fishpond stewards in Hilo, Hawai'i published a

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2024-07-02 23:42:33动物植物
研究人员挫败了耐药细菌的策略

Antibiotic resistant bacteria are experts in evolving new strategies to avoid being killed by antibiotics. One such bacterium is Pseudomonas aeruginosa, which is naturally found in soil and water, but also hospitals, nursing homes and similar institutions

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2024-07-02 23:31:50动物植物
研究揭示肠道细胞在海虫再生中的作用

The sea worm Platynereis dumerilii is only a few centimeters long, but has a remarkable ability: In just a few days, it can regenerate entire parts of its body after an injury or amputation. By focusing more specifically on the mechanisms at play in the r

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2024-07-02 23:20:45动物植物
成熟的发现:揭开梨成熟的基因开关

Fruit ripening involves complex metabolic changes that affect sensory traits like color, flavor, and texture, making fruits more appealing for consumption. These changes are particularly pronounced in climacteric fruits, which experience a surge in ethyle

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2024-07-02 23:06:10动物植物
用于合成天然萜类化合物的创新光驱动酶生物系统

Terpenoids, such as α-farnesene, are natural compounds widely used in flavoring agents, fragrances, and even in biofuels. Traditionally, α-farnesene is extracted from plants, and hence their production may suffer from low yields and poor purity, unable to

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