Cytokinin inhibition of leaf senescence

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August undefined, 2024

WebFeb 5, 2024 · Inhibition of cytokinin synthesis abolished the effect of Si in delaying senescence. Keywords Tomato Salt stress Senescence Silicon Cytokinin 1. Introduction Silicon (Si) is the most abundant mineral element in the earth crust ( Ma et al., 2001 ). Due to its ubiquity, Si exists in any plants grown in the natural soil. 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 …

AHK3-Mediated Cytokinin Signaling Is Required for the Delayed Leaf …

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 ... WebMay 8, 2013 · Cytokinins play a significant role in plant growth promotion in different mechanistic ways, such as cell division, chlorophyll … diatomaceous earth pill bugs

Delayed Leaf Senescence by Upregulation of Cytokinin

WebPremature leaf senescence significantly reduces the photosynthetic rate and severely lowers crop yield. Cytokinins play important roles in leaf senescence and determine grain number. Here, we characterized the roles of the rice ( Oryza sativa L.) cytokinin oxidase/dehydrogenase OsCKX11 in delaying leaf senescence, increasing grain … 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 … 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). diatomaceous earth philippines

Metabolite Responses to Exogenous Application of Nitrogen, Cytokinin …

WebOct 1, 2015 · Transcriptional networks in leaf senescence. Plant senescence is a natural phenomenon known for the appearance of beautiful autumn colors and the ripening of cereals in the field. Senescence is a controlled process that plants utilize to remobilize nutrients from source leaves to developing tissues. While during the past decades, … WebJun 1, 2024 · Cytokinins promote cell division and increase cell expansion during the proliferation and expansion stages of leaf cell development, respectively. During leaf … citing comic booksWebFeb 17, 2024 · Heat-induced leaf senescence may be related to protein hydrolysis into amino acids due to increased protease enzyme activities. Protease inhibitors may delay heat-induced leaf senescence and improve stay-green qualities in cool-season, perennial plants that are sensitive to high temperatures. The objectives of this study included … diatomaceous earth phylum

"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 … " - Cytokinin inhibition of leaf senescence

Cytokinin inhibition of leaf senescence

Leaf senescence: progression, regulation, and application

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 … WebApr 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 …

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WebJul 1, 2013 · 2024. TLDR. Functional characterization of two aromatic cytokinin derivatives, 6-benzylaminopurine-9-arabinosides (BAPAs), 3-methoxy-BAPA and 3-hydroxy- BAPA, … 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 ...

WebApr 14, 2024 · Leaf senescence reduces the photosynthetic capacity of leaves, thus significantly affecting the growth, development, and yield formation of cotton. Melatonin … 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

WebJan 1, 1998 · Inhibition of the Decline in HPR and Other Enzymes by Autoregulated Production of Cytokinin. Senescence can be retarded considerably by the … WebDec 22, 1995 · Inhibition of leaf senescence by autoregulated production of cytokinin Controlling expression of IPT, a gene encoding isopentenyltransferase (the enzyme that …

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.

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 … citing code of ethics social workWebTaylor & Francis Online: Peer-reviewed Journals citing college websitesWebThe 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. diatomaceous earth ph levelWebMar 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 ]. diatomaceous earth powder dispenserWebJul 6, 2024 · Cytokinins (CKs) regulate numerous plant developmental processes, including photosynthesis and leaf senescence. Isopentenyltransferase (IPT) is a rate-limiting … diatomaceous earth pills for humansWebDec 14, 2024 · Cytokinins modulate a number of important developmental processes, including the last phase of leaf development, known as senescence, which is … citing code of federal regulationsWebOct 6, 2016 · Inhibition of leaf senescence by autoregulated production of cytokinin. Science. 1995 Dec 22; 270 (5244):1986–1988. [Google Scholar ... [PMC free article] [Google Scholar] Hanfrey C, Fife M, Buchanan-Wollaston V. Leaf senescence in Brassica napus: expression of genes encoding pathogenesis-related proteins. Plant Mol Biol. 1996 ... diatomaceous earth pinworms