Biomolecules, Volume 11, Issue 1 (January 2021) – 128 articles
Cover Story (view full-size image): Bioactive cytokinins (CKs) can be metabolized in plants by the N-glucosyltransferase pathway to CK N7- and N9-glucosides. Both these forms were in the past considered irreversible and inactive CK products lacking any relevant physiological impact. We report (1) widespread distribution of CK N-glucosides across the plant kingdom with distinct representation in the total CK pool, (2) their changing profiles and expression of UGT76C1 and UGT76C2 genes during Arabidopsis ontogenesis, (3) obvious physiological activities in selected CK bioassays, (4) noticeable effects on expression of CK-related genes in maize and activation of TCSv2::3XVENUS signal in tomato, and (5) their role in inducing CKX activity in oats. View this paper.
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