Note 248

By contrast, the production of germ cells doesn't belong to the phenomenon of dissolution of bonds, because here it is about a consequent unicellular "life" in which a dissolution of bonds only takes place in subsequent cell division (mitosis).

[Further] characteristic examples [of dissolution of bonds] we find in plant parts that locally are affected by fungi, plant parts, that is, that can react with necrose. They, together with the fungi die, and in this way protecting the rest of the plant (= necrogeneous abortion. Such plants are called immune). Another defence mechanism, in the end also connected with ligating, is the formation of demarcation tissue (histogeneous demarcation) by a ring of cell divisions. Later, often ejection, living behind a wound (scrap ejection in leaves).

The play between bonding and dissolution is also to be seen in the following :  Removing the nucleus from a proteus amoeba quickly results in the death of the remaining cytoplasm. Renucleating this cell with another nucleus allows it to normally live on. In the same way, enucleated unfertilized frog eggs could be set into normal development [again] by implantation of a nucleus from a just fertilized egg or from an early state of division of it.

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