H2S is synthesized via CBS/CSE pathway and triggered by cold conditions during Agaricus bisporus storage
Electron. j. biotechnol
;
50: 23-28, Mar. 2021. graf, ilus
Article
in English
| LILACS
| ID: biblio-1292311
ABSTRACT
BACKGROUND:
H2S is proved to be functioning as a signaling molecule in an array of physiological processes in the plant and animal kingdom. However, the H2S synthesis pathway and the responses to cold conditions remain unclear in postharvest mushroom.RESULTS:
The biosynthesis of H2S in the Agaricus bisporus mushroom tissues exhibited an increasing tendency during postharvest storage and was significantly triggered by cold treatment. The cystathionine clyase (AbCSE) and cystathionine b-synthase (AbCBS) genes were cloned and proved responsible for H2S biosynthesis. Furthermore, transcriptional and posttranscriptional regulation of AbCSE and AbCBS were crucial for the enzyme activities and subsequent H2S levels. However, the AbMST was not involved in this process. Moreover, the AbCSE and AbCBS genes displayed low identity to the characterized genes, but typical catalytic domains, activity sites, subunit interface sites, and cofactor binding sites were conserved in the respective protein sequences, as revealed by molecular modeling and docking study. The potential transcription factors responsible for the H2S biosynthesis in cold conditions were also provided.CONCLUSIONS:
The H2S biosynthetic pathway in postharvest mushroom was unique and distinct to that of other horticultural products.
Full text:
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Index:
LILACS (Americas)
Main subject:
Agaricus
/
Cystathionine beta-Synthase
/
Cystathionine gamma-Lyase
/
Hydrogen Sulfide
Type of study:
Prognostic study
Language:
English
Journal:
Electron. j. biotechnol
Journal subject:
Biotechnology
Year:
2021
Type:
Article
Affiliation country:
China
Institution/Affiliation country:
Qingdao Agricultural University/CN
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