Cytokinin apical dominance
WebMar 23, 2024 · The regulation of apical dominance and axillary bud outgrowth is the result of a complex physiological network of signals, in which significant roles are … WebMay 4, 2024 · Apical dominance —the inhibition of axillary bud (lateral bud) formation—is triggered by downward transport of auxins produced in the apical meristem. Many plants …
Cytokinin apical dominance
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WebThe term apical dominance refers to the inhibition of growth of subtending lateral (axillary) buds by a growing shoot apex. Some degree of apical dominance is found in all seed plants, and the phenomenon obviously is … WebApical dominance is suppressed under the effect of high cytokinin concentration and permits the development of axillary buds. If a number of side shoots or axillary shoots have been formed on the shoot tip then their inoculation may be done on the fresh medium containing cytokinin.
WebApr 22, 2015 · Here we use Arabidopsis thaliana cytokinin (CK) biosynthetic and signalling mutants to probe the role of CK in this process. It is well established that bud outgrowth is promoted by CK, and that CK … WebAug 24, 2016 · Genotype C17 showed a release from apical dominance after floral transition coinciding with decreased auxin and increased cytokinin levels in the …
WebNov 8, 2006 · Apical dominance is the term used to describe the control of the shoot tip over axillary bud outgrowth (e.g. Cline, 1997). It is best demonstrated via shoot tip removal (decapitation), which leads to apical dominance. ... Effect of apex excision and replacement by 1-naphthylacetic acid on cytokinin concentration and apical … WebOnce apical:dominance was overcome the cytokinin levels in the lateral buds and the tissue adjacent to them were similar to the levels in the apical regions. The present evidence suggests that cytokinin glucosides áre transported to the meristematic regions of the tubers where they are hydrolysed to
WebApical dominance means that the growing apex of a plant controls the quiescence of buds sitting in lower positions along a shoot. This kind of bud inhibition is termed …
WebAs cytokinins override apical dominance, they are antagonists of the auxin IAA. Cytokinins retard senescence and thus counteract the phytohormone ethylene (Section 19.7). The larvae of some butterflies (e.g., Stigmella, which invade beech trees) use this principle for their nutrition. They excrete cytokinin with their saliva and thus prevent ... lentohintojen vertailuWebAug 14, 2001 · Numerous reports ascribe a stimulatory or inhibitory function to cytokinins in different developmental processes such as root growth and branching, control of apical dominance in the shoot, chloroplast development, and leaf senescence ().Conclusions about the biological functions of cytokinins have mainly been derived from studies on the … avia tankstelle kalbachWebJan 26, 2024 · Apical dominance is the control exerted by the apical bud over the outgrowth of the lateral buds (Thimann and Skoo g 1933 ; Sachs 1991), which is most easily lentokapteeni toivalaWebJun 1, 2024 · Cytokinins play two roles in this process: (1) promoting the growth of meristems to provide a source of stem cells as a prerequisite for leaf initiation and … avia tankstelle kröpelinWebThis downward translocation controls apical dominance, where growth of axillary buds is suppressed. Removal (pinching) of the shoot tip where auxin is being produced, as shown in the three photos of mint below, releases the axillary … lentokapteeni eläkeikäWebApical dominance is suppressed under the effect of high cytokinin concentration and permits the development of axillary buds. If a number of side shoots or axillary shoots have been formed on the shoot tip then their inoculation may be done on the fresh medium containing cytokinin. avia tankstelle mettenWebLa dominance apicale est le contrôle exercé par les portions apicales de la pousse sur la croissance des bourgeons latéraux. Les explications classiques jusque là invoquées … lentokenttäbussi helsinki