Cytokinin inhibition of leaf senescence

Author: fygg

August undefined, 2024

WebMay 8, 2013 · Cytokinins play a significant role in plant growth promotion in different mechanistic ways, such as cell division, chlorophyll … WebApr 25, 2024 · However, it is still unclear how the delayed leaf senescence phenotype is associated with the enhanced cytokinin responses. In this study, we introduced a cytokinin receptor AHK3 knockout into the ...

Plant senescence - Wikipedia

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. WebCarabelli et al. (2007) showed that CKX6, a cytokinin oxidase/hydrolase, was induced in the simulated shade and promoted cytokinin depletion specifically in pre-procambial cells of developing leaf primordial, … how does a supreme court justice get elected

Inhibition of leaf senescence by autoregulated …

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: … 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 … WebThree approaches have been used to investigate the inhibitory role of the cytokinin class of phytohormones in plant senescence: external application of cytokinins, measurement of … phosphine ghost

Leaf senescence: progression, regulation, and application

Silicon delays salt stress-induced senescence by increasing cytokinin ...

WebSep 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 … WebTaylor & Francis Online: Peer-reviewed Journals how does a surrogate pregnancy workWebDec 14, 2024 · Cytokinins modulate a number of important developmental processes, including the last phase of leaf development, known as senescence, which is … phosphine gas pesticide

"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. " - Cytokinin inhibition of leaf senescence

Cytokinin inhibition of leaf senescence

The diverse roles of cytokinins in regulating leaf …

WebCytokinins 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 … WebOct 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 …

Did you know?

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 … WebOct 13, 2024 · AtCKX3 modulates the cytokinin contents during leaf senescence. CKs have been shown to retard leaf senescence (Gan and Amasino 1995). We …

WebMay 1, 2011 · inhibition of senescence by cytokinin is mediated by induced. ... (1998) Regulation of leaf senescence by cytokinin, sugars, and. light. Effects on NADH-dependent hydroxypyruvate reductase. http://webhome.auburn.edu/~amr0008/Zwack%20and%20Rashotte%202413.pdf

WebNov 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. WebThe SAG12 promoter (P SAG12 ) was fused to IPT to form an autoregulatory senescence inhibition system ( Gan and Amasino, 1995). As shown in Fig. 1A, at the onset of leaf senescence, the senescence ...

WebDec 22, 1995 · Senescence-retarded leaves exhibit a prolonged, photosynthetically active life-span. This result demonstrates that endogenously produced cytokinin can …

WebThree approaches have been used to investigate the inhibitory role of the cytokinin class of phytohormones in plant senescence: external application of cytokinins, … how does a surfboard workWebApr 14, 2024 · Leaf senescence reduces the photosynthetic capacity of leaves, thus significantly affecting the growth, development, and yield formation of cotton. Melatonin (MT) is a multipotent substance proven to delay leaf senescence. However, its potential mechanism in delaying leaf senescence induced by abiotic stress remains unclear. This … phosphine idlhWebMay 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 … how does a sustain pedal workWebApr 14, 2024 · Leaf senescence reduces the photosynthetic capacity of leaves, thus significantly affecting the growth, development, and yield formation of cotton. Melatonin … phosphine ir spectrumWebJan 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 … phosphine is not evolved whenWebInhibition of Leaf Senescence by Autoregulated Production of Cytokinin Susheng Gan and Richard M. Amasino* Controlling expression of IPT, a gene encoding isopentenyl … how does a swagelok fitting workWebJun 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 … how does a susu work