相关实验视频

Updated: May 12, 2026

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Published on: August 12, 2019

分离和表征单体异质酒酵母的异质酒酵母

Jennifer Badura^1,2, Beatrice Bernardi^1,2,3, Judith Muno-Bender^1,2

¹Department of Microbiology and Biochemistry, Hochschule Geisenheim University, Von-Lade-Straße 1, 65366, Geisenheim, Germany.

Applied microbiology and biotechnology

|January 22, 2025

概括

研究人员开发了具有稳定的交配类型的哈普洛伊德Kveik酒酵母,以改善酒生产. 这些菌株为培育更好的酒酵母提供了新的可能性,克服了过去化的局限性.

科学领域:

酵母遗传学和繁殖方法
微生物发酵过程中的微生物发酵.
造酒的科学造酒的科学

背景情况:

传统的酒和酒酵母的育种是具有挑战性的,因为养品种的性繁殖率降低.
克维克酒酵母表现出高子活力,这表明有可能用于育种应用.
Lager酵母是Saccharomyces cerevisiae和Saccharomyces eubayanus的混合物,它们的生殖能力有限.

研究的目的:

研究Kveik酵母在传统酵母育种中的潜力.
从Kveik酵母中分离和表征稳定的交配型菌株.
探索这些菌株对开发改进的酒酵母品种的有用性.

主要方法:

从发芽的Kveik酵母子中分离异体殖民地.
对抗测试以确认稳定的交配类型.
分析HO基因突变及其对交配类型切换的影响.
麦芽糖和麦芽糖的发酵分析.
鉴定PAD1和FDC1基因中的突变.

主要成果:

稳定的MATa和MATα单体的Kveik酵母菌株 (Odin,Thor,Freya,Vör) 已经成功分离出来.
异构性与HO基因的失活突变有关,包括一种新的G217R氨基酸变化.
一个菌株 (Odin) 呈现了PAD1和FDC1的突变,导致了POF-表型 (没有性异味).
这四种菌株都发酵了马尔托和马尔托,Freya和Vör被证实是平分类的.

结论:

具有稳定的交配类型的哈普洛伊德Kveik ale酵母可用于常规育种.
这些菌株提供了一种强大的遗传工具,用于改善酒和酒酵母.
开发POF-菌株为新型酒酵母开发和增强酒风味配置文件打开了道路.

关键词:

这种基因是HOHO基因.繁殖繁殖繁殖繁殖化是一种化.发酵发酵是一个过程.在 Lager 酵母酵母.排性排性排性

更多相关视频

Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure

Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure

Published on: May 27, 2022

Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae

Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae

Published on: December 2, 2022

相关概念视频

Microbes in Beverage Production

Microbes in Beverage Production

Alcoholic beverages such as wine, beer, and spirits are the products of microbial fermentation processes that transform simple sugars into ethanol and a wide array of complex flavor compounds. These transformations rely on the metabolic activities of specific yeasts and bacteria, which are selected and controlled to yield the desired beverage characteristics.Wine Fermentation and MaturationWine production begins with the crushing of grapes to release juice and pulp, forming a must that is...

Bioreactor Controls-III

Bioreactor Controls-III

Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...