Cytokinin inhibition of leaf senescence
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 …
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 … 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 …
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 … WebMay 8, 2013 · Cytokinins play a significant role in plant growth promotion in different mechanistic ways, such as cell division, chlorophyll …
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). WebDec 22, 1995 · Senescence-retarded leaves exhibit a prolonged, photosynthetically active life-span. This result demonstrates that endogenously produced cytokinin can …
WebInhibition of Leaf Senescence by Autoregulated Production of Cytokinin Susheng Gan and Richard M. Amasino* Controlling expression of IPT, a gene encoding isopentenyl …
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. cycloplegic mechanism of actionWebApr 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 … cyclophyllidean tapewormsWebFeb 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 … cycloplegic refraction slideshareWebMay 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 … cyclophyllum coprosmoidesWebThe 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 ... cyclopiteWebSep 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 … cyclop junctionsWebThree approaches have been used to investigate the inhibitory role of the cytokinin class of phytohormones in plant senescence: external application of cytokinins, measurement of … cycloplegic mydriatics