Regulations of RLM1 gene affect the anti-autolytic ability of lager yeast / 生物工程学报
Chinese Journal of Biotechnology
; (12): 1059-1070, 2019.
Article
em Zh
| WPRIM
| ID: wpr-771822
Biblioteca responsável:
WPRO
ABSTRACT
The autolysis of brewer's yeast seriously affects the quality of beer and the quality of yeast is considered as one of the key factors in beer brewing. Previous studies on brewer's yeast autolysis showed that RLM1 gene, an important transcription factor in cell integrity pathway, is closely related to the autolysis of yeast. In this study, RLM1 was knocked out and overexpressed in a haploid brewer's yeast. RLM1 disruption resulted in poor anti-autolysis performance of yeast, whereas overexpression of RLM1 contributed to the anti-autolytic ability of yeast. In addition, RLM1 gene knockout affected the osmotic stress resistance, cell wall damage resistance, nitrogen starvation resistance and temperature tolerance of yeast strain. The transcriptional level of GAS1 involved in cell wall assembly and DNA damage response was regulated along with the expression of RLM1, whereas other genes in CWI pathway did not show apparent regularity. RLM1 might mainly affect the expression of GAS1 so as to improve the stress resistance of lager yeast in harsh environment. The result from this study help further understand the mechanism of yeast autolysis and lay a foundation for breeding brewer's yeast strain with better anti-autolytic ability.
Palavras-chave
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Saccharomyces cerevisiae
/
Autólise
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Cerveja
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Parede Celular
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Proteínas de Domínio MADS
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Proteínas de Saccharomyces cerevisiae
Limite:
Humans
Idioma:
Zh
Revista:
Chinese Journal of Biotechnology
Ano de publicação:
2019
Tipo de documento:
Article