相关实验视频
Updated: Feb 15, 2026
11:59
Competitive Genomic Screens of Barcoded Yeast Libraries
Published on: August 11, 2011
18.8K
平衡条形码和基因组学:在HotSHOT DNA提取后,昆虫凭证中的gDNA质量
Vivian Feng1,2, Caroline Høegh-Guldberg3,4, Rudolf Meier1,2
1Center for Integrative Biodiversity Discovery, Leibniz Institute for Evolution and Biodiversity Science, Museum für Naturkunde, Berlin, Germany.
Molecular ecology resources
|February 14, 2026
概括
采用HotSHOT DNA提取方法,在昆虫标本中保存高质量的基因组DNA (gDNA),用于基因组学. 适当的提取前储存对于保持DNA完整性至关重要,特别是在现场条件下.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 昆虫学 昆虫学是一门学科.
背景情况:
- 热SHOT性缓冲系统是一种快速,具有成本效益的DNA提取方法,用于样本条形编码.
- 关于用HotSHOT从小昆虫凭证中提取的DNA适合下游基因组应用的不确定性存在.
研究的目的:
- 在HotSHOT处理之前和之后,评估昆虫标本中的基因组DNA (gDNA) 的质量和数量.
- 评估提取前储存条件 (快速冷与热带温度的乙醇) 对gDNA完整性的影响.
主要方法:
- 在11个昆虫家族中进行了HotSHOT DNA提取,这些昆虫来自6个种类.
- 在提取样本之前,样本经历了不同的储存条件,以模拟现场条件.
- 使用基因组测序技术评估了gDNA质量和数量.
主要成果:
- 在HotSHOT治疗后,保留了足够的高质量的基因组测序gDNA.
- 现场储存,特别是在热带条件下的乙醇中,导致了显著的DNA降解.
- 在高温下延长的HotSHOT治疗导致DNA片段长度更短,受样本硬化的影响.
结论:
- 优化的HotSHOT协议和受控的提取前存储可以保存适合短读和潜在的长读测序的凭证gDNA.
- 提供了协议选择的指导方针,以提高在HotSHOT处理的样本中gDNA的保存.
- 这对于通过条形码识别的罕见或有限标本物种的基因组研究至关重要.
相关概念视频
00:46Genomic DNA in Prokaryotes
48.8K
The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomic Diversity in Bacteria
Although bacterial genomes are much...
48.8K
00:58Genomic DNA in Eukaryotes
53.2K
Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.
53.2K
02:02Genomics
40.9K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
40.9K
01:47Osmoregulation in Insects
17.7K
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
17.7K
02:58Balancing Redox Equations
62.6K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
62.6K
02:30Genomic Imprinting and Inheritance
37.3K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
37.3K