Cytokinin inhibition of leaf senescence
Webing senescence, while transcripts of cytokinin degrading enzymes become more abundant.14,15 This suggests that cytokinin may delay leaf senescence not only as a …
Cytokinin inhibition of leaf senescence
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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 senescence of detached Arabidopsis leaves in the light is less examined, although they provide unique opportunities for the study of the interaction of CK and the photosynthetic apparatus. … 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 …
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. WebDec 22, 1995 · Inhibition of leaf senescence by autoregulated production of cytokinin Controlling expression of IPT, a gene encoding isopentenyltransferase (the enzyme that …
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 … WebApr 14, 2024 · Leaf senescence reduces the photosynthetic capacity of leaves, thus significantly affecting the growth, development, and yield formation of cotton. Melatonin …
WebOct 13, 2024 · AtCKX3 modulates the cytokinin contents during leaf senescence. CKs have been shown to retard leaf senescence (Gan and Amasino 1995). We …
WebJul 1, 2013 · Moreover when a CWINV inhibitor protein was expressed under a cytokinin inducible promoter, treatment with the hormone no longer resulted in delayed … série coréenne en stream gratuiteWebJan 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. série coréenne en streamingWebThree approaches have been used to investigate the inhibitory role of the cytokinin class of phytohormones in plant senescence: external application of cytokinins, … série conversations with friendsWebThey 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: … série coréenne streaming vfWebAt 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 … série coroner saison 1WebNov 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. palmares voiture citadineWebMar 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 ]. palmares ville ou il fait bon vivre