Cytokinin inhibition of leaf 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. 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 …
Cytokinin inhibition of leaf senescence
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WebOct 13, 2024 · AtCKX3 modulates the cytokinin contents during leaf senescence. CKs have been shown to retard leaf senescence (Gan and Amasino 1995). We … 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 …
WebJun 16, 2024 · Elevated CO 2 usually leads to the accumulation of sugars and the decrease of nitrogen content in plant leaves, resulting in the imbalance of C/N ratio in mature leaves, which is also one of the main factors causing premature leaf senescence (Wingler et al. 2004; Agüera and De la Haba 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.
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 … WebFeb 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 …
WebJan 20, 2015 · Plant growth hormones such as cytokinin regulate and delay leaf senescence. Here, the structural gene ( IPT) encoding the cytokinin biosynthetic …
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 … daniel goldsmith associates first novel prizeWebCarabelli 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, … birth certificate mandatory for passportWebNov 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. birth certificate maryland pg countyWebOct 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 … birth certificate markham illinoisWebDec 22, 1995 · Senescence-retarded leaves exhibit a prolonged, photosynthetically active life-span. This result demonstrates that endogenously produced cytokinin can … birth certificate massachusetts onlineWebJun 1, 2024 · Cytokinins promote cell division and increase cell expansion during the proliferation and expansion stages of leaf cell development, respectively. During leaf … daniel goleman democratic leadership styleWebThe 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. daniel goleman is associated with