突破性基因表达破坏了两种入侵性白杂交物中的变过程
Kyung Seok Kim1, Darshan Chetty1, Thomas Chouvenc2
1Department of Entomology, 2143 TAMU, Texas A&M University, College Station, TX, USA.
Insect biochemistry and molecular biology
|August 16, 2025
概括
福莫桑和亚洲地下白之间的杂交破坏了变. 基因表达分析揭示了混合体中表达不足的变相关基因,解释了这些破坏性害虫的发育不相容性.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 亚洲地下 (Coptotermes gestroi) 和亚洲地下 (Coptotermes formosanus) 是入侵性的,具有破坏性的害虫.
- 这些物种在分布上重叠,并且可以杂交,可能导致新的害虫特征.
- 杂交白工人表现出较慢的变,表明杂交不兼容.
研究的目的:
- 在变过程中识别白杂交中的表达错误的基因.
- 为了阐明由杂交引起的变中断背后的分子机制.
- 了解杂交对昆虫发育过程中基因表达的影响.
主要方法:
- RNA测序 (RNA-seq) 在父母和杂交白殖民地进行.
- 对差异表达的转录的时间分析确定了与变相关的基因.
- 杂交物种基因表达与父母物种基因表达的比较,确定了过度表达的基因.
主要成果:
- 鉴定出了几种对变周期,肌肉功能,应激反应和埃克迪松代谢至关重要的基因.
- 与父母物种相比,这些关键基因在杂交白中显著表达不足.
- 超越性的低表达表明混合体中变过程的分子干扰.
结论:
- 与变,肌肉收缩,应激反应和ecdysone代谢相关的基因表达不足可能导致白杂交中的变中断.
- 杂交可能导致对发育至关重要的基因表达不当,影响昆虫种群.
- 这项研究突出了涉及虫变的关键分子通路和昆虫杂交的后果.
更多相关视频
07:42Microinjection of Western Corn Rootworm, Diabrotica virgifera virgifera, Embryos for Germline Transformation, or CRISPR/Cas9 Genome Editing
Published on: April 27, 2018
7.5K
09:57Rearing and Double-stranded RNA-mediated Gene Knockdown in the Hide Beetle, Dermestes maculatus
Published on: December 28, 2016
10.8K
相关概念视频
Background and Environment Affect Phenotype
6.7K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.7K
Overview of Transposition and Recombination
16.1K
Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
16.1K
Position-effect Variegation
6.5K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.5K
In-vitro Mutagenesis
14.2K
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
14.2K
Hybrid Zones
20.2K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
20.2K
Gene Conversion
9.9K
Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
9.9K
