Cytokinin inhibition of leaf senescence
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. WebJun 16, 2024 · Leaf senescence is a genetically controlled developmental process (Gan and Amasino 1997; Lim et al. 2007; Kim et al. 2009 ). However, the initiation of leaf senescence is regulated by an array of external and internal signals that are integrated …
Cytokinin inhibition of leaf senescence
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WebOct 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 … 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 …
WebApr 14, 2024 · Leaf senescence reduces the photosynthetic capacity of leaves, thus significantly affecting the growth, development, and yield formation of cotton. Melatonin … 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 …
WebJul 6, 2024 · Cytokinins (CKs) regulate numerous plant developmental processes, including photosynthesis and leaf senescence. Isopentenyltransferase (IPT) is a rate-limiting enzyme in the CK-biosynthesis pathway. We overexpressed ipt under tissue-specific promoters to study the long-range effect of CK on the functioning of tomato source leaves. WebJan 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.
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 … bison meat shippingWebMar 30, 2015 · Cytokinins also play a role in stress response and delaying leaf senescence [ 15 ]. Both exogenous applications of cytokinins, as well as genetic transformation to increase endogenous cytokinins levels have been shown to delay senescence and increase abiotic stress tolerance in creeping bentgrass [ 2, 16 – 18 ]. bison meat price per poundbison meat vs ground beefWebJan 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 … bison mechanical stony mountainWebSep 3, 2024 · Furthermore, genetic manipulation of cytokinin production in transgenic plants has provided very solid evidence for the inhibition role of cytokinins in leaf senescence [7, 51,52,53]. In this study, the content of cytokinins in senescing leaves was far above that of non-senescing leaves, and genes related to various aspects of CK … darren and anjie galsworthyWebNov 1, 2003 · Cytokinin has been reported to delay leaf senescence ( Gan and Amasino, 1996 ), so it was predicted that cytokinin deficiency might promote senescence. Instead, chlorophyll was retained in cytokinin-deficient leaves longer than in wild-type leaves, particularly in regions adjacent to major veins. bison mechanical winnipegWebOct 10, 2024 · The dark-detached leaves are widely used as a model to investigate senescence-delaying mechanisms of cytokinin (CК). The role of CK during … bison meat whole foods