The biochemical process in plants (German respiration, also dissimilation), which supplies the energy absolutely necessary for growth, also in the case of Rebstock, This can also be used as a counterpart to photosynthesis can be called, because the reverse of this (as in humans and animals) oxygen consumed and carbon dioxide released, as well as no sunlight is needed directly. However, the process is also indirectly dependent on sunlight, because it requires or consumes some substances generated during photosynthesis for breathing. In contrast to photosynthesis at night, among other things amino acids. acids. Strength and sugar split for energy. Among other things, the malic acid decomposed. High temperature can heat stress cause, which increases the respiration rate enormously by an increase of 10 ° Celsius. This results in the phenomenon of low-acid wines in very hot wine-growing regions.