If costs of plasticity are significant,selection should drive the loss of sporulation ability; alternatively,sporulation ability could be lost via mutational degradation. Maselet al.(2007) showed that, in general, mutational degradation is a moreimportant limit for rarely used plasticity whenever the functionalmutation rate is greater than the selective coefficient
I think that this is a very interesting point. I don't think that I had ever thought that the costs of plasticity would ever be so significant that they would be lost through selection. This is an important point to show the limit for rarely used plasticity. This makes me want to understand more about how/why these types of species were originally plastic at all.