2024-06-11 16:06:59动物植物
地质生物学家团队发现“失踪”海绵

At first glance, the simple sea sponge is no creature of mystery. No brain. No gut. No problem dating it back 700 million years. Yet convincing sponge fossils only go back about 540 million years, leaving a 160 million-year gap in the fossil record.

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2024-06-11 15:55:06动物植物
研究表明,吝啬的喜鹊往往不那么聪明

Magpies that are aggressive towards other members of their group tend to be not so smart, according to researchers at The University of Western Australia.

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2024-06-11 15:42:01动物植物
科学家发现造血干细胞自我更新所需的“缺失部分”

UCLA scientists have identified a protein that plays a critical role in regulating human blood stem cell self-renewal by helping them sense and interpret signals from their environment.

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2024-06-11 15:29:47动物植物
研究人员解开了有2000年历史的破坏性船蛆之谜

They bedeviled ancient Greek navies, helped shipwreck Christopher Columbus, aided in the sinking of the Spanish Armada and caused the wharves in San Francisco Bay to collapse into the sea, but until now, scientists have been unable to pinpoint exactly how

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2024-06-11 15:14:58动物植物
象海豹爆发标志着高致病性禽流感首次在哺乳动物中跨国传播

Highly pathogenic H5N1 avian influenza viruses are becoming increasingly flexible and are adapting to mammals in new ways that could have global consequences for humans, wildlife and livestock, according to a new study of a massive outbreak among elephant

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2024-06-11 15:02:19动物植物
天堂鱼在进化和行为遗传学研究中的重要性

In Hungary, ethological research is most often identified with tests on dogs, but novel methodological advances could bring another species, the paradise fish, into the spotlight. Fish are easy to handle and produce numerous offspring, which could open up

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2024-06-11 14:51:55动物植物
仅用身体质量和翅膀面积预测鸟类、昆虫、蝙蝠和鲸鱼的拍打频率

A single universal equation can closely approximate the frequency of wingbeats and fin strokes made by birds, insects, bats and whales, despite their different body sizes and wing shapes, Jens Højgaard Jensen and colleagues from Roskilde University in Den

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2024-06-11 14:39:46动物植物
解锁香蕉抗病性:植物抗毒素合成的关键酶

Bananas are a vital crop globally, but their yields are threatened by various diseases, particularly banana fusarium wilt caused by Fusarium oxysporum. Traditional control methods, including chemical pesticides, pose environmental risks and are not always

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2024-06-11 14:27:45动物植物
研究为菊花的建筑优雅提供了基因见解

Chrysanthemums, admired globally for their intricate capitulum structures, have posed a genetic puzzle for scientists and horticulturists. The genetic mechanisms that dictate their development have been largely unknown, limiting the ability to selectively

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2024-06-11 14:17:00动物植物
沙漠英雄亮相:四角蟾蜍基因组解码干旱生存策略

As water scarcity looms as a major threat to global ecosystems and food production, the quest to understand how plants like Cissus quadrangularis conquer arid landscapes is more critical than ever. The genetic blueprint of such species could hold the key

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2024-06-11 14:03:51动物植物
从温室到沙漠:乙烯受体在玫瑰耐盐性中的作用

A study reveals a novel mechanism in roses where the Tryptophan-rich sensory protein (TSPO) degrades the ethylene receptor ETHYLENE RESPONSE 3 (RhETR3) to enhance salt tolerance. This discovery sheds light on the complex relationship between ethylene sign

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2024-06-11 13:52:43动物植物
新型脂肽对金黄色葡萄球菌具有致死性

A novel antibacterial lipopeptide produced by the bacterium Serratia marcescens has been shown to be highly effective in killing Staphylococcus aureus—one of the most important pathogens occurring in humans.

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