In:
PLOS ONE, Public Library of Science (PLoS), Vol. 17, No. 9 ( 2022-9-12), p. e0274394-
Abstract:
Aspergillus oryzae is widely used in industrial applications, which always encounter changes within multiple environmental conditions during fermentation, such as temperature stress. However, the molecular mechanisms by which A . oryzae protects against temperature stress have not been elucidated. Therefore, this study aimed to characterize the fermentative behavior, transcriptomic profiles, and metabolic changes of A . oryzae in response to temperature stress. Both low and high temperatures inhibited mycelial growth and conidial formation of A . oryzae . Transcriptomic analysis revealed that most differentially expressed genes (DEGs) were involved in sugar metabolism and lipid metabolism under temperature stress. Specifically, the DEGs in trehalose synthesis and starch metabolism were upregulated under low-temperature stress, while high temperatures inhibited the expression of genes involved in fructose, galactose, and glucose metabolism. Quantitative analysis of intracellular sugar further revealed that low temperature increased trehalose accumulation, while high temperature increased the contents of intracellular trehalose, galactose, and glucose, consistent with transcriptome analysis. In addition, most DEGs involved in lipid metabolism were significantly downregulated under low-temperature stress. Furthermore, the metabolomic analysis revealed that linoleic acid, triacylglycerol, phosphatidylethanolamine, and phosphoribosyl were significantly decreased in response to low-temperature stress. These results increase our understanding of the coping mechanisms of A . oryzae in response to temperature stress, which lays the foundation for future improvements through genetic modification to enhance A . oryzae against extreme temperature stress.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0274394
DOI:
10.1371/journal.pone.0274394.g001
DOI:
10.1371/journal.pone.0274394.g002
DOI:
10.1371/journal.pone.0274394.g003
DOI:
10.1371/journal.pone.0274394.g004
DOI:
10.1371/journal.pone.0274394.g005
DOI:
10.1371/journal.pone.0274394.g006
DOI:
10.1371/journal.pone.0274394.g007
DOI:
10.1371/journal.pone.0274394.g008
DOI:
10.1371/journal.pone.0274394.g009
DOI:
10.1371/journal.pone.0274394.t001
DOI:
10.1371/journal.pone.0274394.s001
DOI:
10.1371/journal.pone.0274394.s002
DOI:
10.1371/journal.pone.0274394.s003
DOI:
10.1371/journal.pone.0274394.s004
DOI:
10.1371/journal.pone.0274394.s005
DOI:
10.1371/journal.pone.0274394.s006
DOI:
10.1371/journal.pone.0274394.s007
DOI:
10.1371/journal.pone.0274394.s008
DOI:
10.1371/journal.pone.0274394.s009
DOI:
10.1371/journal.pone.0274394.s010
DOI:
10.1371/journal.pone.0274394.s011
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2022
detail.hit.zdb_id:
2267670-3
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