搜索结果: 1-15 共查到“生物学 light”相关记录68条 . 查询时间(0.094 秒)
To save caterpillars, turn off your porch light.
Nearly 20 years ago, scientists developed ways to stimulate or silence neurons by shining light on them. This technique, known as optogenetics, allows researchers to discover the functions of specific...
南京农业大学农学院《Plant Physiology》发表万建民院士团队“Phytochrome B mediates dim-light-reduced insect resistance by promoting the ethylene pathway in rice”（图）
万建民 水稻褐飞虱 基因
2023/10/28
褐飞虱是水稻生产中最严重的害虫。褐飞虱通过针状口器刺入水稻叶鞘组织吸食韧皮部汁液，造成水稻严重减产甚至绝收。种植抗性品种是综合防控褐飞虱的基础。然而植物抗病虫性通常受光照、温度和湿度等环境因素的影响，在一定程度上制约了抗性基因的有效利用。如采用密植的栽培方式是当前许多作物增加单位面积产量的重要途径，但是密植通常会导致冠层以下的植株部分光照不足而产生庇荫反应，易滋生各类病虫害，虽然这种现象普遍存在，...
What a long, strange trip it’s been for psychedelic drugs. From their use in ancient indigenous ceremonies, to their often-caricatured association with the 1960s counterculture, to their recent reemer...
Why do woodpeckers peck? New discovery about bird brains sheds light on intriguing question（图）
鸟类大脑 交际鼓声 动物行为学
2023/6/26
A team led by a Brown biologist discovered that the same specialized brain area that helps songbirds learn their songs also exists in woodpeckers, suggesting that the communicative drumming evolved in...
Protein controlled by both light and temperature can inform cell signal pathways（图）
蛋白质 细胞 信号通路
2023/7/12
Most organisms have proteins that react to light. Even creatures that don’t have eyes or other visual organs use these proteins to regulate many cellular processes, such as transcription, translation,...
Cut off the head of a three-banded panther worm, and it will grow another — mouth, brain, and all. Cut off its tail, and the same thing happens. Cut it in three pieces, and within eight weeks there’ll...
Light pollution is disorienting animals that navigate by the night sky
light pollution animals lost direction
2021/8/10
When dung beetles in South Africa are ready to roll, they pick their path with the help of the Milky Way. But our home Galaxy is becoming harder and harder to spot as light pollution brightens the nig...
New study sheds light on evolution of photosynthesis
evolution of photosynthesis crop production plant
2021/8/5
A new study sheds new light on the evolution of photosynthesis in plants and algae, which could help to improve crop production.
Scientists shed new light on role of viruses in coral bleaching（图）
new light role viruses coral bleaching
2020/10/23
Scientists at Oregon State University have shown that viral infection is sometimes involved in coral bleaching -- the breakdown of the symbiotic relationship between corals and the algae the...
Light-activated 'CRISPR' enables fast, precise gene editing and detection of DNA repair（图）
Light-activated CRISPR enables fast precise gene editing detection DNA repair
2020/7/3
In a series of experiments co-funded by the National Science Foundation, scientists at Johns Hopkins have used light as a trigger to make quick, precise cuts in the genomic material of ...
Scientists are refining our understanding of how light wavelengths affect the way plants develop their chloroplasts.Chloroplasts are the "engines" of plants. They use light from the sun and carbon dio...
Scientists discover how cyanobacteria thrive in low light（图）
Scientists cyanobacteria low light
2020/2/20
Scientists have determined the structure of the protein complex that gives cyanobacteria their unique ability to convert weak, filtered sunlight into useable energy. The National Science Foundation-fu...
Shining a Light on Plant Growth and Development（图）
Shining a Light Plant Growth Development
2017/12/19
Plants don’t have eyes, but they do “see” their surroundings using light.That’s made possible by proteins called photoreceptors that absorb light and convert it into a signal that turns genes on or of...
Paleogenomic analysis sheds light on Easter Island mysteries（图）
Paleogenomic Easter Island mysteries
2017/10/26
Easter Island is a place of mystery that has captured the public imagination. Famous for ancient carved statues and a location so remote it boggles the mind, the island presents a captivating puzzle f...