Cytokinins Stimulate Plasmodesmatal Transport in Leaves
نویسندگان
چکیده
منابع مشابه
Cytokinins in the Leaves of Ginkgo biloba: I. The Complex in Mature Leaves.
Cytokinin conjugates of zeatin, ribosylzeatin, and their respective dihydro derivatives tentatively have been identified as the major cytokinins present in mature Ginkgo biloba L. leaves. Ribosylzeatin was present in higher levels than zeatin and dihydrozeatin. No evidence could be found that 6-(2,3,4-trihydroxy-3-methylbutylamino)purine occurs as a metabolite in the mature leaves. From the ava...
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Lysosomal cystine transport is a carrier-dependent process that, in isolated lysosomes, is stimulated by proton gradients, membrane potential, and millimolar concentrations of divalent cations. The importance of these regulatory factors in vivo is not well established. Polyamines were found to stimulate cystine transport in Percoll gradient purified rat liver lysosomes with spermidine greater t...
متن کاملSubcellular localization determines the availability of non-targeted proteins to plasmodesmatal transport
BACKGROUND Individual plant cells are encased in a cell wall. To enable cell-to-cell communication, plants have evolved channels, termed plasmodesmata, to span thick walls and interconnect the cytoplasm between adjacent cells. How macromolecules pass through these channels is now beginning to be understood. RESULTS Using two green fluorescent protein (GFP) reporters and a non-invasive transfe...
متن کاملShort - tenn effects of cytokinins on the lipid fatty acids of green leaves
Isolated shoots of Cotrur btumei and isolated leaves from this species and from Impaliens Jut/ani were fed zeatin for different periods. High doses of the bonnone (100 ~g/rnJ ) caused a measurable effect on lipid fatty acid composition after a two-hour feeding period in uolated leaves of <AInu. The maximum effects were at 20-30 }Jg zeatin taken up per g fresh weight. With the leaves of Impatimr...
متن کاملCytokinins inhibit epiphyllous plantlet development on leaves of Bryophyllum (Kalanchoë) marnierianum.
When leaves of Bryophyllum marnierianum are detached from the plant, plantlets develop from primordia located at their margins. Leaves excised with a piece of stem attached do not produce plantlets. Severing the major leaf veins overcomes the inhibitory effect of the attached stem, indicating that the control agent is transmitted through the vascular system. A possible mechanism is that an inhi...
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ژورنال
عنوان ژورنال: Frontiers in Plant Science
سال: 2021
ISSN: 1664-462X
DOI: 10.3389/fpls.2021.674128