2025-04-20 12:24:35动物植物
DNA修复蛋白的意外结构可能导致新的癌症治疗方法

A University of Iowa-led study has revealed the unexpected structure adopted by the DNA repair protein RAD52 as it binds and protects replicating DNA in dividing cells. This new structural and mechanistic understanding of the RAD52-DNA complex may help re

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2025-04-20 12:10:41动物植物
Flowerpot蛇的DNA修复能力为唐氏综合症等人类遗传疾病提供了见解

The flowerpot snake, one of the world's smallest snakes, has some unusual distinctions. Also known as the Brahminy blind snake, it's the only known snake species with three sets of chromosomes instead of two—and it can reproduce without a mate.

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2025-04-20 11:58:26动物植物
物理力如何从内到外塑造植物以生成其复杂的3D形状

Plants don't just grow, they build. From towering trees to delicate flowers, complex plant shapes are sculpted with remarkable precision. Now a study by biologists and biophysicists at Université de Montréal reveals how plants build their organs in three

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2025-04-20 11:45:34动物植物
感知疾病:研究支持促进蜜蜂健康的新方法

Beekeepers in the United States lost more than 55% of managed colonies last year—the highest loss rate since the Apiary Inspectors of America began determining them in 2011.

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2025-04-20 11:32:33动物植物
行动和休息:猫头鹰之旅让蒙大拿州西部的研究人员感到惊讶

Researchers have tracked 89 northern saw-whet owls (Aegolius acadicus) along a migration corridor in Western Montana, underscoring the efficacy of telemetry studies for detailed investigations into the movements of birds.

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2025-04-20 11:18:17动物植物
广泛使用的杀菌剂对麻雀雏鸟构成威胁

A French team coordinated by a scientist at CNRS highlights the harmful impact on sparrow reproduction of chronic exposure to tebuconazole, one of the most widely used fungicides in agriculture in Europe. These findings, recently published in Environmenta

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2025-04-20 11:05:14动物植物
蜜蜂根据颜色和距离主动调整花朵选择:更新达尔文理论之外的“花朵恒常性”

Pollinating insects such as bumblebees often repeatedly visit the same type of flower, even when a variety of flowers bloom nearby. This behavior is known as "flower constancy." Darwin speculated that flower constancy was a passive response to a

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2025-04-20 10:54:49动物植物
雌性蚊子唾液腺可能解开疟疾传播的钥匙

Malaria, responsible for hundreds of thousands of deaths each year worldwide, is caused by a parasite transmitted through the salivary glands of female Anopheles mosquitoes.

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2025-04-20 10:42:38动物植物
椰子是如何获取水分的?

Coconut trees are iconic plants found across the world's tropical regions. They're called "nature's supermarket" or the "tree of life" in several cultures because every part of the coconut tree is used. Its leaves can be used to tha

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2025-04-20 10:30:04动物植物
有弹性的植物和狡猾的病毒之间的斗争:研究发现了一种新的RNA沉默机制

Unlike animals, plants do not possess an adaptive immune system with antibodies or T cells to fight viral infections. Instead, they rely on the RNA silencing system, which serves as their innate immune defense by recognizing and degrading viral RNA. In tu

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2025-04-20 10:19:24动物植物
可堆肥传感器有助于增强数字农业的影响力

Screen-printed, biodegradable soil sensors that can be composted at the end of their lifecycle could enable farmers to improve crop yields while reducing electronic waste, researchers say.

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2025-04-20 10:07:08动物植物
科学家考虑杂交繁殖以拯救澳大利亚的橙腹鹦鹉免于灭绝

A team of environmental scientists at the University of Sydney, working with a pair of colleagues from the University of Copenhagen, are pondering possible ways to save the extremely endangered orange-bellied parrot. In their paper published in the journa

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