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  • Receptors
  • 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. (biologists.org)
  • zeatin
  • cis-Zeatin-riboside- O -glucoside, N 6 -(Δ 2 -isopentenyl)adenosine-5′-monophosphate (iPRMP), and trans-zeatin-riboside- O -glucoside were the most abundant intracellular cytokinins. (plantphysiol.org)
  • The levels of zeatin-type and isopentenyladenosine-type cytokinins were determined in bleeding sap and in extracts of the lowermost centimeter of the stem base with an enzyme-linked immunosorbent assay (ELISA). (naver.com)
  • 1955 ), and subsequent studies identified the cytokinin zeatin as an endogenous plant growth regulator ( Letham, 1973 ). (biologists.org)
  • pathogen
  • The pathogen hijacks host vascular cambium development, and cytokinins are implicated in this process. (springer.com)
  • Cytokinin production can support pathogen growth through the development of structures such as tumors or galls or by altering patterns of nutrient transport, but can also enhance the host's susceptibility to invasion. (plantae.org)
  • derivatives
  • For example, the use of HPLC for the analysis of cytokinins and their derivatives is superior to the classical technique of gas chromatography, since the liquid mobile phase allows the separation and recovery of cytokinins and their derivatives which are not readily volatilized. (springer.com)
  • Cytokinins and their derivatives purified by HPLC are often sufficiently pure for immunoassay or direct introduction into the mass spectrometer as trimethylsilated or permethylated derivatives, since the step using gas chromatography is unnecessary. (springer.com)
  • vegetative
  • Oligogalacturonides support root elongation growth of lettuce [ 11 ] and were shown to promote cytokinin-induced vegetative shoot formation from tobacco leaf explants [ 12 ]. (hindawi.com)
  • characterization
  • Entsch B, Letham DS, Parker CW, Summons RE (1979) Preparation and characterization, using high-performance liquid chromatography, of an enzyme forming glucosides of cytokinins. (springer.com)
  • isomers
  • Anderson RA, Kemp JR (1979) Reversed-phase high-performance liquid chromatography of several plant cell division factors (cytokinins) and their cis and trans isomers. (springer.com)
  • perturbations
  • Furthermore, our results demonstrate that young LRP are more sensitive to perturbations in the cytokinin activity than are developmentally more advanced primordia. (plantcell.org)
  • ribosides
  • The elevated auxin level in tubers of the transformants was accompanied with a decrease in content of cytokinin bases and their ribosides in tubers and most shoots. (springer.com)
  • but cytokinins can also exist in inactive forms as ribosides (in which a ribose sugar is attached to the N 9 nitrogen of the purine ring) and as ribotides (in which the ribose moiety contains a phosphate group). (biologists.org)
  • Compounds
  • Many pathogens produce virulence factors that improve their pathogenicity, including in some cases compounds produced by the host, such as the hormone cytokinin. (plantae.org)
  • Protein
  • Chamrád I , Simerský R , Bérešová L, Strnad M , Šebela M , Lenobel R (2014) Proteomic identification of a candidate sequence of wheat cytokinin-binding protein 1. (cr-hana.eu)
  • Cells
  • books.google.co.uk - Cytokinins are hormones involved in all aspects of plant growth and development and are essential for in vitro manipulation of plant cells and tissues. (google.co.uk)
  • Cytokinins were discovered in a search for factors that promote cell proliferation in cultured plant cells in concert with a second phytohormone, auxin. (biologists.org)
  • initiation
  • Here, we show that the early phases of lateral root organogenesis, including priming and initiation, take place in root zones with a repressed cytokinin response. (plantcell.org)