Ribosome Profiling Reveals Genome-Wide Cellular Translational Regulation in Lacticaseibacillus rhamnosus ATCC 53103 under Acid Stress
文献类型： 外文期刊
作者： Fan, Xuejing 1 ; Zhang, Kenan 1 ; Zhang, Zongcai 1 ; Zhang, Zhen 1 ; Lin, Xue 1 ; Liu, Xin 1 ; Feng, Zhen 1 ; Yi, Huaxi 3 ;
作者机构： 1.Northeast Agr Univ, Coll Food Sci, Key Lab Dairy Sci, Minist Educ, 600 Changjiang Rd, Harbin 150030, Peoples R China
2.Chinese Acad Trop Agr Sci, Spice & Beverage Res Inst, Wanning 571533, Peoples R China
3.Ocean Univ China, Coll Food Sci & Engn, Qingdao 266100, Peoples R China
关键词： L. rhamnosus; translation regulation; transcription regulation; acid shock response; translation efficiency
期刊名称：FOODS （ 影响因子：5.561； 五年影响因子：5.94 ）
ISSN：
年卷期： 2022 年 11 卷 10 期
页码：
收录情况： SCI
摘要： During fermentation and food processing, Lacticaseibacillus rhamnosus ATCC 53103 can encounter many adverse conditions, and acid stress is one of them. The purpose of the present study was to investigate the influence of acid stress on the global translational and transcriptional regulation of Lacticaseibacillus rhamnosus ATCC 53103. Two pH values (pH 6.0 vs. pH 5.0) were applied, the effects of which were studied via ribosome profiling and RNA sequencing assay. Under acid stress, many genes showed differential changes at the translational and transcriptional levels. A total of 10 genes showed different expression trends at the two levels. The expression of 337 genes-which mainly participated in the ABC transporters, amino acid metabolism, and ribosome functional group assembly pathways-was shown to be regulated only at the translational level. The translational efficiency of a few genes participating in the pyrimidine and amino acid metabolism pathways were upregulated. Ribosome occupancy data suggested that ribosomes accumulated remarkably in the elongation region of open reading frame regions under acid stress. This study provides new insights into Lacticaseibacillus rhamnosus ATCC 53103 gene expression under acid stress, and demonstrates that the bacterium can respond to acid stress with synergistic translational and transcriptional regulation mechanisms, improving the vitality of cells.
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