2025-01-21 01:11:24动物植物
令人震惊的线索:细胞如何在胚胎发育过程中利用电场迁移

As an embryo grows, there is a continuous stream of communication between cells to form tissues and organs. Cells need to read numerous cues from their environment, and these may be chemical or mechanical in nature. However, these alone cannot explain col

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2025-01-21 01:00:18动物植物
安第斯极端微生物中鉴定出的具有潜在工业应用的生物活性化合物

An article published in the journal Scientific Reports describes how researchers analyzed biofilm produced by bacteria found in the El Medano hot springs, located in Chile in the central Andes, and concluded that one of its key ingredients can be used to

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2025-01-21 00:47:36动物植物
“狗发现了”松露:研究人员和犬科动物发现了两种新的松露物种

Michigan State University researchers—along with colleagues at the University of Florida, citizen scientists and their "truffle dogs"—have discovered two new species of truffle. The research was published in the journal Mycologia and featured on

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2025-01-21 00:34:23动物植物
新发现的机制通过结合DNA和RNA表观遗传学实现了精确的基因调控

Our genes contain all the instructions our body needs to function, but their expression must be finely regulated to guarantee that each cell performs its role optimally. This is where DNA and RNA epigenetics come in: a series of mechanisms that act as &qu

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2025-01-21 00:22:09动物植物
南非早期古人类牙齿的同位素显示他们很少吃肉

A team of climate geochemists at the Max Planck Institute for Chemistry, University of the Witwatersrand and Princeton University has found evidence that early hominins living in South Africa ate a mostly vegetarian diet. In their study, published in the

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2025-01-21 00:09:55动物植物
微生物多样性图谱:研究发现,42%的细菌缺乏基因组数据

Researchers at the U.S. Department of Energy (DOE) Joint Genome Institute (JGI), a DOE Office of Science User Facility located at Berkeley Laboratory, have published a study in Science Advances that evaluates the current state of microbial genomic biodive

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2025-01-20 23:55:06动物植物
新型高粱变种在石油产量上优于大豆

Researchers at the Center for Advanced Bioenergy and Bioproducts Innovation (CABBI) have developed a new sorghum variant that can outperform soybeans in oil production, with great potential as a clean source of renewable fuel.

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2025-01-20 23:42:28动物植物
基于地图的指标预测农业扩张导致的生物多样性丧失

An international team of environmentalists, zoologists and land use specialists has developed an extinction probability metric for land that is converted to agriculture. Their paper is published in the journal Philosophical Transactions of the Royal Socie

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2025-01-20 23:27:36动物植物
菲利普岛离婚企鹅的秘密生活

Life isn't always a beach for Phillip Island's beloved penguins, who have been found to divorce their partners and find a new mate if they aren't satisfied with the number of young filling the nest—but it's a risky decision that can lower success in t

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2025-01-20 23:14:43动物植物
心灵之眼:鱼如何通过大脑的松果体感知颜色和亮度

We see color because photoreceptor cones in our eyes detect light waves corresponding to red, green, and blue, while dimness or brightness is detected by photoreceptor rods. Many non-mammalian vertebrates like fish, however, are known to detect color and

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2025-01-20 23:00:13动物植物
识别榛子产地以打击食品欺诈

A team from the University of Barcelona is leading a study that improves the technology available to identify the geographical origin and variety of hazelnuts, and thus avoid commercial fraud and food safety problems linked to the consumption of these nut

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2025-01-20 22:46:40动物植物
粪便数据:粪便如何改善食草动物分布的全球地图

Researchers have used dung records to create high-resolution maps of herbivore distribution around the world. Their study, published in Nature Food, reveals a strong positive relationship between dung presence and grazing pressure, meaning the amount of d

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