Cytokinin signaling in plant development.
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TLDR
The current understanding of cytokinin metabolism, transport and signaling is summarized, and how this phytohormone regulates changes in gene expression to mediate its pleiotropic effects is discussed.Abstract:
The phytohormone cytokinin plays diverse roles in plant development, influencing many agriculturally important processes, including growth, nutrient responses and the response to biotic and abiotic stresses. Cytokinin levels in plants are regulated by biosynthesis and inactivation pathways. Cytokinins are perceived by membrane-localized histidine-kinase receptors and are transduced through a His-Asp phosphorelay to activate a family of transcription factors in the nucleus. Here, and in the accompanying poster, we summarize the current understanding of cytokinin metabolism, transport and signaling, and discuss how this phytohormone regulates changes in gene expression to mediate its pleiotropic effects.read more
Citations
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Cytokinin action in response to abiotic and biotic stresses in plants.
Anne Cortleven,Jan Erik Leuendorf,Manuel Frank,Daniela Pezzetta,Sylvia Bolt,Thomas Schmülling +5 more
TL;DR: The phytohormone cytokinin was originally discovered as a regulator of cell division and later was described to be involved in regulating numerous processes in plant growth and development including meristem activity, tissue patterning, and organ size.
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Ethylene signaling in plants
TL;DR: Although this canonical pathway is the predominant signaling cascade, alternative pathways also affect ethylene responses, and this review summarizes the current understanding of ethylene signaling, including these alternative pathways, and discusses how Ethylene signaling has been manipulated for agricultural and horticultural applications.
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The Sugar-Signaling Hub: Overview of Regulators and Interaction with the Hormonal and Metabolic Network.
Soulaiman Sakr,Ming Wang,Fabienne Dédaldéchamp,Maria-Dolores Perez-Garcia,Laurent Ogé,Latifa Hamama,Rossitza Atanassova +6 more
TL;DR: The present review emphasizes the diversity of sugar signaling integrators, the main molecular and biochemical mechanisms related to the sugar-signaling dependent regulations, and to the regulatory hubs acting in the interplay of the Sugar-hormone and sugar-nitrogen networks.
Journal ArticleDOI
Cytokinin : a developing story
Brecht Wybouw,Bert De Rybel +1 more
TL;DR: A comprehensive overview of recent findings on how cytokinin influences growth and development in plants is given, and areas for future research are highlighted.
Journal ArticleDOI
Cytokinin at the Crossroads of Abiotic Stress Signalling Pathways
Jaroslav Pavlů,Jaroslav Pavlů,Jan Novák,Vladěna Koukalová,Markéta Luklová,Markéta Luklová,Břetislav Brzobohatý,Břetislav Brzobohatý,Martin Černý +8 more
TL;DR: Information is summarized on cytokinin’s effects on plants’ xenobiotic resistance, and its interactions with light, temperature, drought, and salinity signals, and a list of abiotic stress-related genes are compiled and demonstrated that their expression patterns overlap with those of cytokinIn metabolism and signalling genes.
References
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Journal ArticleDOI
Two-component signal transduction
TL;DR: Detailed analyses of a relatively small number of representative proteins provide a foundation for understanding this large family of signaling proteins, which consists of two conserved components, a histidine protein kinase and a response regulator protein.
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Cytokinin Oxidase Regulates Rice Grain Production
Motoyuki Ashikari,Hitoshi Sakakibara,Shaoyang Lin,Toshio Yamamoto,Tomonori Takashi,Asuka Nishimura,Enrique R. Angeles,Qian Qian,Hidemi Kitano,Makoto Matsuoka +9 more
TL;DR: It is shown that a QTL that increases grain productivity in rice, Gn1a, is a gene for cytokinin oxidase/dehydrogenase (OsCKX2), an enzyme that degrades the phytohormone cytokinIn.
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Cytokinin-Deficient Transgenic Arabidopsis Plants Show Multiple Developmental Alterations Indicating Opposite Functions of Cytokinins in the Regulation of Shoot and Root Meristem Activity
TL;DR: The results are consistent with the hypothesis that cytokinins have central, but opposite, regulatory functions in root and shoot meristems and indicate that a fine-tuned control of catabolism plays an important role in ensuring the proper regulation of cytokinin functions.
Journal ArticleDOI
Integration of spatial and temporal information during floral induction in Arabidopsis.
Philip A. Wigge,Philip A. Wigge,Min Chul Kim,Katja E. Jaeger,Wolfgang Busch,Markus Schmid,Jan U. Lohmann,Detlef Weigel,Detlef Weigel +8 more
TL;DR: Data suggest that FT primarily controls the timing of flowering of Arabidopsis, and that integration of temporal and spatial information is mediated in part by the bZIP transcription factor FD, which is already expressed at the shoot apex before floral induction.
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CYTOKININS: Activity, Biosynthesis, and Translocation
TL;DR: Recent findings on the relationship between CK structural variation and activity, distinct features in CK biosynthesis between higher plants and Agrobacterium infected plants, CK translocation at whole-plant and cellular levels, and CKs as signaling molecules for nutrient status via root-shoot communication are summarized.