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<p>Hypertonic stress can bring about changes in biological morphology, growth and development, as well as physiology and biochemistry. After hypertonic stress, it can provide mechanisms for compensating, adapting, and repairing biological individuals. Two different mating type strains of <i>Cordyceps militaris</i>, strain CmFRQ-454 (mating type <i>MAT1-1–1</i> and <i>MAT1-1–2</i>) and strain TN (mating type <i>MAT1-1–1</i>, <i>MAT1-1–2</i> and <i>MAT1-2–1</i>), were used in the study of hypertonic solution treatment. The results showed that the ability of strain CmFRQ-454 to tolerate D-mannitol and D-sorbitol hyperosmotic solution was lower than that of strain TN. After the treatment with the hypertonic solution of D-mannitol and D-sorbitol, the fruiting bodies of <i>C. militaris</i> strain CmFRQ-454 could be rejuvenated, and the fruiting bodies undergone degeneration only when the concentration of D-mannitol reached the critical value of conidial germination. After the treatment with the hypertonic solution of D-mannitol and D-sorbitol, the expression of CmFRQ (<i>C. militaris</i> FREQUENCY) in the mycelium of <i>C. militaris</i> strain CmFRQ-454 was significantly increased. However, after the treatment with the hypertonic solution of D-mannitol and D-sorbitol, the fruit bodies of <i>C. militaris</i> strain TN were less affected or slightly degenerated. After hypertonic solution treatment, the expression of CmFRQ in the mycelium of <i>C. militaris</i> TN had little change. These results reflect the compensation, adaptation and repair mechanisms of <i>C. militaris</i> strain CmFRQ-454 after hypertonic stress. But the <i>C. militaris</i> strain TN lacks this mechanism.</p>

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Hypertonic stress affects the expression of clock protein CmFRQ in Cordyceps militaris and remodels the morphology of fruiting body

  • 期刊论文

  • 发表日期：

    2025年2月5日

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  • Jing-Mei Peng,
  • Dan-Dan Zhang,
  • Ming-Jia Fu

摘要

Hypertonic stress can bring about changes in biological morphology, growth and development, as well as physiology and biochemistry. After hypertonic stress, it can provide mechanisms for compensating, adapting, and repairing biological individuals. Two different mating type strains of Cordyceps militaris, strain CmFRQ-454 (mating type MAT1-1–1 and MAT1-1–2) and strain TN (mating type MAT1-1–1, MAT1-1–2 and MAT1-2–1), were used in the study of hypertonic solution treatment. The results showed that the ability of strain CmFRQ-454 to tolerate D-mannitol and D-sorbitol hyperosmotic solution was lower than that of strain TN. After the treatment with the hypertonic solution of D-mannitol and D-sorbitol, the fruiting bodies of C. militaris strain CmFRQ-454 could be rejuvenated, and the fruiting bodies undergone degeneration only when the concentration of D-mannitol reached the critical value of conidial germination. After the treatment with the hypertonic solution of D-mannitol and D-sorbitol, the expression of CmFRQ (C. militaris FREQUENCY) in the mycelium of C. militaris strain CmFRQ-454 was significantly increased. However, after the treatment with the hypertonic solution of D-mannitol and D-sorbitol, the fruit bodies of C. militaris strain TN were less affected or slightly degenerated. After hypertonic solution treatment, the expression of CmFRQ in the mycelium of C. militaris TN had little change. These results reflect the compensation, adaptation and repair mechanisms of C. militaris strain CmFRQ-454 after hypertonic stress. But the C. militaris strain TN lacks this mechanism.