Cytokinin inhibition of leaf senescence
WebDec 22, 1995 · Inhibition of leaf senescence by autoregulated production of cytokinin Controlling expression of IPT, a gene encoding isopentenyltransferase (the enzyme that … WebThe cytokinin zeatin is named after the genus of corn, Zea. Cytokinins ( CK) are a class of plant hormones that promote cell division, or cytokinesis, in plant roots and shoots. They are involved primarily in cell growth and differentiation, but also affect apical dominance, axillary bud growth, and leaf senescence.
Cytokinin inhibition of leaf senescence
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WebNov 25, 2024 · Gan, S. & Amasino, R. M. Inhibition of leaf senescence by autoregulated production of cytokinin. Science 270 , 1986–1988 (1995). Article ADS CAS PubMed Google Scholar http://webhome.auburn.edu/~amr0008/Zwack%20and%20Rashotte%202413.pdf
WebNov 15, 2024 · Inhibition of leaf senescence by cytokinin had been discovered for decades. After application of exogenous cytokinins, endogenous cytokinins content changed and the components of cytokinin signaling pathway altered, which all affected the leaf senescence process (Gan and Amasino, 1995). WebMay 8, 2013 · Cytokinins play a significant role in plant growth promotion in different mechanistic ways, such as cell division, chlorophyll …
WebAt the mechanistic end of this process, it was found that increased cell-wall invertase activity which occurs in response to cytokinin is both necessary and sufficient for … WebFeb 1, 2001 · Cytokinins modulate a number of important developmental processes, including the last phase of leaf development, known as senescence, which is associated with chlorophyll breakdown, photosynthetic apparatus disintegration and oxidative damage. There is ample evidence that cytokinins can slow down all these senescence …
WebMay 3, 2024 · One of the first symptoms of leaf senescence is the increase in protease activity (Thimann 1980). However, there is not much information about the self-regulation of proteolysis during leaf senescence. ... Zwack PJ, Rashotte AM (2013) Cytokinin inhibition of leaf senescence. Plant Signal Behav 8(7):e24737. CrossRef Google Scholar …
WebThey are involved primarily in cell growth and differentiation, but also affect apical dominance, axillary bud growth, and leaf senescence. There are two types of cytokinins: … citi foundation portalWebOct 13, 2024 · Cytokinins retard leaf senescence and must be degraded at the onset of and during leaf senescence. A mechanism is revealed, in which the senescence-specific transcription factor, AtNAP, physically binds to the promoter of AtCKX3 to activate cytokinin oxidase expression and catabolizing cytokinins and thereby facilitating senescence … diary\u0027s o3WebDec 22, 1995 · Senescence-retarded leaves exhibit a prolonged, photosynthetically active life-span. This result demonstrates that endogenously produced cytokinin can … diary\u0027s o5Webing senescence, while transcripts of cytokinin degrading enzymes become more abundant.14,15 This suggests that cytokinin may delay leaf senescence not only as a … diary\\u0027s o5WebJul 1, 2013 · Moreover when a CWINV inhibitor protein was expressed under a cytokinin inducible promoter, treatment with the hormone no longer resulted in delayed … cit ifpWebJan 9, 2006 · Cytokinins are plant hormones with profound roles in growth and development, including control of leaf longevity. Although the cytokinin signal is known to be perceived by histidine kinase receptors, the underlying molecular mechanism and specificity of the receptors leading to delayed leaf senescence have not yet been elucidated. diary\\u0027s o6WebCytokinins help to maintain the plant cell and expression of cytokinin biosynthesis genes late in development prevents leaf senescence. [3] A withdrawal of or inability of the cell to perceive cytokinin may cause it to … diary\u0027s o6