High temperature induced disruption of the cell wall integrity and structure in Pleurotus ostreatus mycelia

Applied Microbiology and Biotechnology
Zhiheng QiuChenyang Huang

Abstract

Fungal cells are surrounded by a tight cell wall to protect them from harmful environmental conditions and to resist lysis. The synthesis and assembly determine the shape, structure, and integrity of the cell wall during the process of mycelial growth and development. High temperature is an important abiotic stress, which affects the synthesis and assembly of cell walls. In the present study, the chitin and β-1,3-glucan concentrations in the cell wall of Pleurotus ostreatus mycelia were changed after high-temperature treatment. Significantly higher chitin and β-1,3-glucan concentrations were detected at 36 °C than those incubated at 28 °C. With the increased temperature, many aberrant chitin deposition patches occurred, and the distribution of chitin in the cell wall was uneven. Moreover, high temperature disrupts the cell wall integrity, and P. ostreatus mycelia became hypersensitive to cell wall-perturbing agents at 36 °C. The cell wall structure tended to shrink or distorted after high temperature. The cell walls were observed to be thicker and looser by using transmission electron microscopy. High temperature can decrease the mannose content in the cell wall and increase the relative cell wall porosity. According to infrare...Continue Reading

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Citations

Dec 11, 2019·Scientific Reports·Jonas Henrique CostaTaícia Pacheco Fill
Mar 27, 2019·Nanomaterials·Lilia SabantinaAndrea Ehrmann
Jun 18, 2021·Scientific Reports·Maria Elena AntinoriAthanassia Athanassiou
Sep 19, 2021·Applied Microbiology and Biotechnology·Lu LuoAimin Ma
Oct 27, 2021·Journal of Agricultural and Food Chemistry·Qi ZhangZhongyang Ding

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Methods Mentioned

BETA
confocal microscopy
transmission

Software Mentioned

SPSS

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