They are resistant, in various degrees, to heat, desiccation, freezing, toxic chemicals, and radiation. These properties are due, in part, to the presence of a thick endospore wall containing calcium dipicolinate and to an extremely low water content within the spore .
Bacterial endospores are among the most resistant form of spores and can survive intense heat and desiccation. They are also known to have an intrinsic ... |
Proper cortex formation is needed for dehydration of the spore core, which aids in resistance to high temperature. A germ cell wall resides under the cortex ... |
26 авг. 2017 г. · Thus, the endospore is a quiescent structure that is impervious to dessication, heat and many chemicals. It shelters the genome until conditions ... |
However, sporulation at an elevated temperature invariably results in spores with increased heat resistance. This effect is mediated at least in part by a ... |
31 авг. 2023 г. · The impermeability of the spore coat is thought to be responsible for the endospore's resistance to chemicals. The heat resistance of endospores ... |
Dipicolinic acid is a chemical that helps to sustain dormancy and resistance for endospores. 5 to 15 percent of the dry weight of bacterial spores is composed ... |
2 сент. 2023 г. · Typical bacterial spores are resistant to approximately 40–45°C higher temperatures than their corresponding vegetative cells. |
Spores are highly resistant to a wide variety of physical stresses such as: wet and dry heat, UV and gamma radiation, oxidizing agents, chemicals, and extremes. |
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