Stimulace růstu rostlin změnou teplotních podmínek

Ambient temperature is the key factor that may positively or negatively regulate the growth and development of land plants. For instance, the change in temperature conditions determines the leaf development, flowering period and the fruit ripening. In this thesis, we investigate the role of cytokinin (CK) in the response of plants to higher soil temperature. Using genetic and transcriptomic analysis, we have identified several components of CK signaling pathway that orchestrate the increase growth rate of plants growing in the warm (35 °C) soil. The cellular analysis of epidermal leaf cells showed that this higher growth rate is caused by 2-fold higher cell expansion. This pattern of changing cell morphogenesis correlates with decreased levels of active forms of CK that act as a key factor in the maintenance of cell proliferation phase in the leaf