阿斯伯吉卢斯大豆的种群基因组学是由食物环境塑造的
Kimberly L Acevedo1,2, Elizabeth Eaton1, Julia Leite1
1Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA.
Genome biology and evolution
|April 8, 2025
概括
从Aspergillus parasiticus中化Aspergillus sojae用于发酵食品减少了遗传多样性和亚毒素的产生. 这种适应增强了某些菌株的盐分耐受性,影响了食品发酵过程.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 食品科学 食品科学 食品科学
背景情况:
- 传统的发酵食品依赖于专门的微生物,例如适应特定环境的Aspergillus物种.
- 在大豆发酵中使用的Aspergillus sojae被假设是来自Aspergillus parasiticus的化.
研究的目的:
- 研究大豆发酵中长期使用对阿斯伯吉卢斯大豆种群结构,基因组变异和表型特征的影响.
- 为了比较A. sojae与其潜在的祖先,寄生虫.
主要方法:
- 23个Aspergillus parasiticus菌株的基因组测序和17个Aspergillus sojae基因组的分析.
- 在各种条件下对9个阿斯伯吉路斯分离物的表型测定,包括盐分耐受性.
主要成果:
- Aspergillus sojae形成了一个独特的,低多样性的种群,表明最近的克隆扩张.
- 在A. sojae中观察到功能丧失突变,特别是在二次代谢物基因集群中,如aflatoxin.
- A. sojae菌株缺乏亚黄毒素的产生,并且在类似米索的盐水条件下表现出增强的生长,与变量A. parasiticus不同.
结论:
- 这项研究支持了Aspergillus parasiticus是Aspergillus sojae的祖先的假设.
- 化导致了遗传多样性的显著减少,并导致了A. sojae.中亚黄毒素生产的丧失.
- 需要进一步的研究,以了解这些养菌株在发酵大豆产品的感官属性和微生物动态中的作用.
更多相关视频
09:21Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.
Published on: February 15, 2019
10.5K
10:24Author Spotlight: Quantification of Aflatoxins and Phytoalexins in Peanut Seeds to Identify Genetic Resistance Against Aspergillus
Published on: April 19, 2024
1.0K
相关概念视频
Background and Environment Affect Phenotype
6.4K
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...
6.4K
Gene Flow
34.4K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
34.4K
