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南京农业大学农学院《New Phytologist》发表植物环境适应分子遗传研究课题组“A major gene for chilling tolerance variation in Indica rice codes for a kinase OsCTK1 that phosphorylates multiple substrates under cold”（图）
植物环境 分子遗传
2024/4/29
水稻起源于热带和亚热带，对低温十分敏感，当温度低于15℃时水稻便无法正常生长。有统计显示，每年低温冷害导致我国水稻减产约50亿kg。近年来，因直播稻大面积推广以及水稻种植区域不断由热带、亚热带向高海拔、高纬度地区扩张，水稻遭受低温冷害的频率有增加趋势。低温冷害已成为限制我国水稻生产的一大瓶颈。因此，挖掘调控水稻耐冷性的关键基因，研究其作用机理，对防控水稻低温冷害具有重要意义。
Imagine a ball thrown in the air: It curves up, then down, tracing an arc to a point on the ground some distance away. The path of the ball can be described with a simple mathematical equation, and if...
New technique illuminates DNA helix
DNA螺旋 细胞 运动蛋白
2023/5/23
Cornell researchers have identified a new way to measure DNA torsional stiffness – how much resistance the helix offers when twisted – information that can potentially shed light on how cells work.
Michael Purugganan is the Silver Professor of Biology and Dorothy Schiff Professor of genomics, as well as the Dean of Science at New York University. Prior to joining the NYU faculty in 2006, he was ...
New optogenetic probe enables communication with neural microcircuits
New optogenetic communication neural microcircuits
2015/11/13
The burgeoning field of optogenetics makes it possible for scientists to control brain activity using pulses of light. Now, Brown University researchers have developed an optogenetic device which open...
New form of DNA modification may carry inheritable information
DNA modification carry inheritable information
2015/5/25
Scientists at the University of Chicago, Harvard University and the Chinese Academy of Sciences have described the surprising discovery and function of a new DNA modification in insects, worms and alg...
New method helps map species' genetic heritage
New method helps map species genetic heritage
2014/12/30
These questions seem simple, but are actually difficult for geneticists to answer. A new, sophisticated statistical technique developed by researchers at the University of Illinois and the University ...
Cold Spring Harbor, NY – With three billion letters in the human genome, it seems hard to believe that adding a DNA base here or removing a DNA base there could have much of an effect on our health. I...
"Where do new genes come from?" is a long-standing question in genetics and evolutionary biology. A new study from researchers at the University of California, Davis, published Jan. 23 in Science Expr...
A worldwide consortium of medical researchers and social scientists has found tiny changes to a person's genetic sequence are associated with educational level.
State-of-the-art testing to measure genetic variations in livestock, and to identify inherited diseases within herds, will soon be available in Australia at The University of Queensland’s Animal Genet...
Researchers from the University of Sheffield have helped to sequence the entire genome of the zebra finch, unravelling the genetics underpinning some of the uniquely fascinating traits of birds such a...
遗传学教学中Morgan定律讲解新探New Approach in the Explaining of the Morgan Law in Genetics Teaching
遗传学教学 连锁 三点测交 Morgan定律
2008/1/10
摘要 运用广义和狭义的定义模式,对Morgan定律中的几个基本概念做了新的注释,深入地分析了经典三点测交的使用条件，并找出了粗糙脉孢菌的经典三点测交中不相邻两点间的交换值(FC)与其重组值（FR）差的出处。
Abstract:Using the model of broad and narrow way,the paper introduces a new approach in the exp...
摘要
提出了一种新的DNA芯片的封闭方法：1-碘丙烷封闭方法,并对1-碘丙烷和琥珀酸酐两种不同的封闭方法的封闭效果进行了比较实验，研究封闭试剂、封闭时间对氨基DNA芯片杂交结果所产生的影响。结果表明： 1-碘丙烷封闭效果明显好于琥珀酸酐的封闭效果，用1-碘丙烷封闭后的芯片进行杂交，芯片杂交信号强、背景噪声低，灵敏度高，整个封闭过程实验操作简单，时间短，1h即可达到所需效果。1-碘丙烷可以作为一种...
摘要
提供一组新编分子进化实验。通过该实验使学生了解重建分子进化树的基本过程，获得使用不同建树方法、建树材料和建树参数对建树结果影响的正确认识。本实验同时具有开放性和研究性特点，符合实验教学改革的方向和要求。Abstract: This paper presents a group of new experiments on molecular evolution. It allows stud...