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Showing 1 to 20 of 70 for “"cytokinin"”.
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Mechanisms of cytokinin action
… Chinese cabbage leaf tissue. 3. The synthetic cytokinins kinetin and 6-benzylaminopurine bind reversibly to purifies Chinese cabbage leaf ribosomes. At 4°C, 0.8 molecules of kinetin and 1.08 molecules of 6BA are bound per ribosome. Adenine and adenine derivatives that are inactive as cytokinins …
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The Basis and Scope of Cytokinin Activity
Made available in DSpace on 2014-12-10T23:00:59Z (GMT). No. of bitstreams: 1 7114788.pdf: 3691568 bytes, checksum: 5834010d6dd62e5af8140ad8d770f1f8 (MD5) Previous issue date: 1970
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The Synthesis of Cytokinins and Cytokinin Analogs
Made available in DSpace on 2014-12-10T23:01:33Z (GMT). No. of bitstreams: 1 7317363.pdf: 2816632 bytes, checksum: dee8c38eaf8f625452f0d796c0c9096d (MD5) Previous issue date: 1972
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Cytokinin interconversion by StCKP1 controls potato tuber dormancy
… Union due to their impact upon the environment. Cytokinins, a group of plant growth regulators, are known to play a central role in tuber bud sprouting and tuber initiation from stolon tips in Solanum tuberosum L. although it is unclear when and how cytokinins act to regulate dormancy. The …
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GENETIC MANIPULATION OF CYTOKININ LEVELS IN NEW PLANT TYPE RICE
… in chlorophyll content, rate of senescence and cytokinin (CK) levels in the top three leaves of field-grown New Plant Type (NPT) rice were determined during the grain filling period. The chlorophyll content in the leaves decreased from flowering to maturity. Fast-senescing and slow-senescing NPT …
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Influence of iron and cytokinin on Cynodon spp. cultured at chilling temperatures
… to investigate the influence of foliar iron and cytokinin applications on bermudagrass growth during fall and spring. The relationship of photosynthesis, respiration, and nonstructural carbohydrate composition to chilling temperatures was also studied. Foliar applications of Fe in late-summer and …
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Cytokinin-mediated processes promote heat-induced disease susceptibility of plants to bacterial pathogens
… disease susceptibility. The plant growth hormone cytokinin is known to regulate responses to both biotic and abiotic pressures, making it an ideal target to study heat-induced disease susceptibility. The overarching goal of this dissertation was to understand the role of cytokinin in heat-induced …
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Characterization and insights into the molecular mechanism of cytokinin-induced priming of plant defenses
… research has demonstrated that the plant hormone cytokinin (CK) has a priming effect against biotrophic pathogens, a phenomenon referred to here as cytokinin-induced priming (CIP). This dissertation aims to gain further understanding of CIP against the hemibiotrophic bacterial pathogens …
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Effects of Nitrate and Cytokinin on Nitrogen Metabolism and Heat Stress Tolerance of Creeping Bentgrass
… fluctuation of N metabolism and effects of cytokinin (CK) and nitrate; 2) to characterize the impacts of N and CK on creeping bentgrass under heat stress; 3) to investigate the simultaneous effects of CK and N on the antioxidant responses of heat stressed creeping bentgrass; and 4) to …
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REGULATING CYTOKININ METABOLISM DURING INFLORESCENCE MERISTEM DEVELOPMENT TO PROMOTE HIGHER RICE PRODUCTIVITY THROUGH CHANGES ON PLANT ARCHITECTURE
… of grains per panicle, and grain weight. The cytokinin group of phytohormones positively regulates plant yield through the simultaneous regulation of source capacity (leaf senescence) and sink strength (grain number and size). It is hypothesized that directly modulating endogenous cytokinin …
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How the fas locus contributes to Rhodococcus fascians cytokinin production: an in-depth molecular and biochemical analysis
… plasmid of R. fascians D188, the role for cytokinins in the pathology had been anticipated for a long time. Subsequent studies identified and characterized the fas operon as a key genetic determinant of virulence and likely cytokinin biosynthesis. Nevertheless, many aspects concerning …
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Regulation of Glucanohydrolases in Nicotiana Tabacum on the Messenger-Rnalevel (beta-1,3-Glucanase, Chitinase, Cytokinin, Auxin, Complementary-Dna Clone)
… tissues is inhibited by the hormones auxin and cytokinin. As judged by immunosorption and partial proteolysis of the in vitro translation products, poly(A)+ RNA from tobacco tissues grown on hormone-free medium contains mRNA for a ca. 37kd precursor of the mature 33-34kd (beta)-1,3-glucanase and …
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Roles and Interplay of Flavonoids, Reactive Oxygen Species, and Cytokinin in the Early Infection of Medicago truncatula by Sinorhizobium meliloti
… an aberrant infection phenotype in the Medicago cytokinin perception mutant cre1-1, where the nodulation-specific cytokinin receptor CRE1 is mutated. Through this, I have developed a new model for cytokinin activity in infection, whereby cytokinin signalling via CRE1 is required to control cell …
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Morphological and physiological growth responses of Kentucky bluegrass to foliar applications of iron, a cytokinin, and growth regulator- like chemicals
… iron phosphate citrate (Fe), the synthetic cytokinin benzyladenine (BA), the systemic triazole fungicides propiconazole and triadimefon, and MZ63 cold water seaweed extract. Applications of Fe at 112 mg m⁻², BA at 6 mg m⁻², propiconazole and triadimefon at 42 and 150 mg m⁻², respectively, …
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Activity Enhancement and the Mechanism of Glyphosate Action in Common Cocklebur
… into RNA and DNA fraction by 8 h. The endogenous cytokinin content was measured in root tips at 4 and 12 h after glyphosate application. Glyphosate does not alter cytokinin accumulation by 12 h. Our results indicate that glyphosate may rapidly inhibit protein synthesis. Successive application of …
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Morphogenesis in the moss physcomitrella patens
… which was upset by high concentrations of cytokinin and lanthanum. The response of caulonema apical cells to polarotropic light was recorded and compared to the gravitropic response. The time-lapse studies provided the basis for the further development of the quantitative analysis of …
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Identification of soybean, Glycine max (L.) Merr., cytokinins
… 10-25 mm long contained nine fractions having cytokinin-like activity detectable by the Amaranthus bioassay. These fractions were derived from purification of extracts from 15 g of immature fruits. The fractions were purified by polyvinylpyrrolidone (PVP), paper, Sephadex LH-20 and high …
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The role of CLE peptides during nodulation
… produced Nod factors and downstream of it, cytokinin signaling. As nodulation is an energy-consuming process, legumes developed long distance mechanisms to control nodule number, amongst which autoregulation of nodulation (AON), involving reciprocal signal exchange between the root system …
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