hellooo first of all thank you for this vidéo it's very helpfull and simple. Cracks in the coat of the endospore can be caused by alternation between cold and heat.
Thank you for your comment and your request! In the next few months I will be posting some videos about plants and animals, but I won't have time to make a video on fungi. Here is a video that covers what I think you are asking for: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-gIEm3QV58Dw.html Happy studying!