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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，...
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 Used to Measure the ‘Big Stretch’ in Spider Silk Proteins
Light Big Stretch Spider Silk Proteins
2016/2/23
While working to improve a tool that measures the pushes and pulls sensed by proteins in living cells, biophysicists at Johns Hopkins say they’ve discovered one reason spiders’ silk is so elasti...
Researchers shed new light on regulation of repetitive DNA sequences
Researchers repetitive DNA sequences
2016/2/22
A pair of studies by a team of scientists has shed new light on the nature of a particular type of DNA sequences—tandem DNA repeat arrays—that play important roles in transcription control, genome org...
With more than 2.25 billion cups consumed daily worldwide, coffee is the principal agricultural product of many tropical countries. According to estimates by the International Coffee Organization, mor...
Rice synthetic biologists shine light on genetic circuit analysis（图）
genetic circuit analysis Rice synthetic biologists
2014/3/20
HOUSTON — (March 9, 2014) — In a significant advance for the growing field of synthetic biology, Rice University bioengineers have created a toolkit of genes and hardware that uses colored lights and ...
Twenty billion pieces of DNA in 100 small fish have opened the eyes of biologists studying evolution. After combining new technologies, researchers now know many of the genomic regions that allowed an...
Australia's first full genome project gets green light（图）
genome project green light Australia
2009/8/3
One of the corals that form the backbone of the Great Barrier Reef (GBR) is to become the first complex animal to have its genes fully explored in Australia.
牛肠激酶轻链基因的克隆及其在大肠杆菌中的融合表达Cloning and Fusion Expression of Bovine Enterokinase Light Chain Gene in Escherichia Coli
牛肠激酶轻链 克隆 表达 自催化切割
2008/1/16
摘要为克隆表达牛肠激酶（enterokinase）轻链(EKL)编码基因，以期应用于融合蛋白的切割与纯化，从市售北方黄牛十二指肠组织中提取总RNA,以RT-PCR方法扩增其cDNA片段，将此片段克隆于pUCmT载体中，经过特异性限制性内切酶酶切分析片段正确后，进行全序列分析。结果表明,克隆的cDNA与GenBank上的序列相比完全一致，得到了编码正确的牛肠激酶轻链基因全序列。随后，将目的基因片段插...
May 9, 2007，The human genome is littered with so-called junk DNA, relics of "jumping genes" that hopped about chromosomes for more than a billion years. Although these jumping genes have been widely r...