2024-06-29 18:23:30动物植物
为什么严酷的雪球地球踢开始了我们最早的多细胞祖先

For a billion years, single-celled eukaryotes ruled the planet. Then around 700 million years ago during Snowball Earth—a geologic era when glaciers may have stretched as far as the Equator—a new creature burst into existence: the multicellular organism.

阅读全文
2024-06-29 18:12:52动物植物
新发现的细菌调节机制对抗菌控制措施有启示

Research spearheaded by four biologists within the College of Arts and Sciences at Indiana University Bloomington has uncovered a new regulatory mechanism shared by many bacteria, which may have profound implications for anti-bacterial control measures in

阅读全文
2024-06-21 06:20:41动物植物
先进的水下机器人发现能孵化巨型蛋的深海鱿鱼

The deep sea is the largest living space on Earth, but many of the animals and habitats far beneath the ocean's surface remain shrouded in mystery. MBARI's advanced underwater robots, including remotely operated vehicles (ROVs), are helping survey life

阅读全文
2024-06-21 06:07:41动物植物
科学家重建了两种最致命的疟疾寄生虫的古代基因组,以确定其起源和传播

In a study appearing in Nature, an international team of researchers led by the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, reconstructed the evolutionary history and global spread of malaria over the past 5,500 years, identify

阅读全文
2024-06-21 05:56:18动物植物
百合球茎形成过程中生长素-蔗糖关系的研究

A study reveals how auxin and sucrose metabolism regulate bulbil initiation in Lilium lancifolium. By manipulating auxin levels and examining key sucrose metabolism genes, researchers found that low auxin concentrations enhance bulbil formation. This disc

阅读全文
2024-06-21 05:41:20动物植物
中国智慧与水产养殖现代创新

Aquaculture has been a traditional and vibrant farming practice in China for 8,000 years. In the 21st century, the success of Chinese aquaculture and its contributions to global food security have attracted extensive attention around the world. Aquacultur

阅读全文
2024-06-21 05:27:27动物植物
发现甲虫杀死的云杉的新方法可以帮助森林和野火管理人员

A new machine-learning system developed at the University of Alaska Fairbanks can automatically produce detailed maps from satellite data to show locations of likely beetle-killed spruce trees in Alaska, even in forests of low and moderate infestation whe

阅读全文
2024-06-21 05:14:53动物植物
科学家发现卡瑞金信号传导的非转录机制

Researchers led by Dr. Wang Lei and Wang Bing from the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences have shown that the non-transcriptional activity of the transcriptional repressor proteins SUPPRESSOR OF MAX2 1 (SMAX

阅读全文
2024-06-21 05:02:05动物植物
成熟的知识:解开香蕉软化的遗传联系

A recent study has pinpointed a novel bHLH gene, MabHLH28, as a key regulator of banana fruit ripening. This gene significantly influences the softening process by upregulating the expression of softening-related genes, either independently or in synergy

阅读全文
2024-06-21 04:50:49动物植物
研究表明,有机农民对土壤微生物组的信念会影响他们的实践

Organic farming can support soil microorganisms that promote plant defenses and reduce insect pests. But not all organic practices are equally beneficial for soil microbes, and it's important to understand farmer motivations in order to encourage the ado

阅读全文
2024-06-21 04:36:49动物植物
海洋热浪摧毁了麦德斯群岛的红戈尔人:研究

The increase in the frequency and intensity of marine heat waves in recent decades is one of the effects of global climate change. A study by the University of Barcelona, published in the Journal of Animal Ecology, shows that the extreme heat wave of 2022

阅读全文
2024-06-21 04:24:51动物植物
新型飞镖发射器可能是给动物注射药物的更好方法

A new type of dart launcher has been developed as a safer and more cost-effective alternative to firearms or air guns to inject animals with drugs or tracking chips.

阅读全文
 3154   首页 上一页 171 172 173 174 175 176 177 178 179 180 下一页 尾页