Tomáš Hluska

TL;DR: This review summarizes present knowledge on the enzymes that synthesize cytokinins, form cytokinin conjugates, and carry out irreversible elimination of the hormones, including their phylogenetic analysis and possible variations in different organisms.

TL;DR: Levels of this zeatin isomer are significantly enhanced during early stress response and it is demonstrated that it originates independently from de novo biosynthesis in stressed tissues, possibly by elevated specific RNA degradation.

TL;DR: The purification and characterization of non-secreted CKX enzymes and substrate specificities are discussed, and vacuolar AtCKX enzymes in certain conditions degraded N(6)-(2-isopentenyl)adenine di- and triphosphates two to five times more effectively than its monophosphate.

TL;DR: This study shows that CKX1 is a type II single-pass membrane protein that localizes predominantly to the endoplasmic reticulum (ER) in Arabidopsis and indicates that this CKX isoform is a bona fide ER protein directly controlling the cytokinin, which triggers the signaling from the ER.

TL;DR: In this paper, the authors compare different cytokinin metabolites, and their biosynthesis, translocation, and sensing to illustrate the different mechanisms behind the two CK strategies, and apply this comparison to a plant developmental scale and, beyond plants, to interactions with organisms of other kingdoms.