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Transcriptional profiling of Auricularia cornea in selenium accumulation
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Transcriptional profiling of Auricularia cornea in selenium accumulation
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Journal Article
Transcriptional profiling of Auricularia cornea in selenium accumulation
2019
Overview
Auricularia cornea
is a widely cultivated edible fungus with substantial nutritive value. This study aimed to enrich the multifunctional bionutrient element selenium in
A. cornea
to improve its quality and explore the accumulation of selenium in the fungus using high-throughput RNA-Seq technology. In general, the treatment group with a 100 µg/g supply of selenium outperformed the other treatment groups in terms of high yield, rich crude polysaccharides and a high total selenium concentration. Additional evidences demonstrated the budding and mature phases were two typical growth stages of
A. cornea
and were important for the accumulation of selenium. Therefore, the budding and mature phase tissues of
A. cornea
in the treatment group with a 100 µg/g supply of selenium were used for transcriptome analysis and compared to those of a control group that lacked additional selenium. A total of 2.56 × 105 unigenes from
A. cornea
transcriptome were assembled and annotated to five frequently used databases including NR, GO, KEGG, eggNOG and SwissProt. GO and KEGG pathway analysis revealed that genes involved in metabolic process and translation were up-expressed at the budding stage in response to selenium supplementation, including amino acid metabolism, lipid metabolism, ribosome. In addition, the differential gene expression patterns of
A. cornea
suggested that the up-expressed genes were more likely to be detected at the budding stage than at the mature stage. These results provide insights into the transcriptional response of
A. cornea
to selenium accumulation.
Publisher
Nature Publishing Group UK,Nature Publishing Group
