Kinetin

About: Kinetin is a research topic. Over the lifetime, 7856 publications have been published within this topic receiving 135550 citations. The topic is also known as: Kinetin.

Stimulatory effect of kinetin, ascorbic acid and glutamic acid on growth and chemical constituents of Codiaeum variegatum L. plants.

Abstract: 2 Abstract: Two pot experiments were conducted during two successive seasons (2009 and 2010) in the nursery of the National Research Center. The aim of this work is to study the stimulatory effect of kinetin (20 and 40 ppm), ascorbic acid (100 and 200 ppm) and glutamic acid (100 and 200 ppm) on growth and chemical constituents of Codiaeum variegatum L. Results showed that, increasing concentration of the three foliar applications gradually increased all growth parameters (plant height, number of branches, number of leaves, stem diameter, root length as well as fresh and dry weights of all plant organs) and also the content of the total carbohydrates, nitrogen, phosphorus and potassium percentages. The effect of glutamic acid was superior to that of kinetin, ascorbic acid on increasing plant growth at vegetative growth especially when plants were sprayed with glutamic acid at 200 ppm.

In vitro screening of rice (oryza sativa l.) callus for drought tolerance

Abstract: While drought resistance is become of increasing importance in rice (Oryza sativa L.), selection under actual field conditions is tedious due to low heritability and time required. Selection in tissue culture is thought to be one way to improve selection efficiency, but this requires standardized protocols. Rice cultivars PAU 201 and PR 116 showed significant callus induction, but the capacity for callus induction and regeneration decreased under polyethylene glycol (PEG) (6000) stress in both cultivars. Calli were induced on semisolid Murahige and Skoog (MS) medium supplemented with 2.5 mg l-1 2, 4-dichlorophenoxy acetic acid (2,4-D) + 0.5 mg l-1 kinetin (kin) + 560 mg l-1 proline + 30 g l-1 sucrose + 8 g l agar-1. Embryogenic calli showed shoot regeneration on MS medium supplemented with 2.0 mg l-1 benzyl aminopurine (BAP) + 0.5 mg l-1 kinetin + 0.5 mg l-1 napthalene acetic acid (NAA) + 30 g l-1 sucrose + 8 g l-1 agar. Increased levels of PEG (6000) (0, 0.5, 1.0, 1.5, 2.0 %) were used to create water stress. There was reduction in callus induction ability and plant regeneration efficiency with increasing levels of PEG (6000) stress. These results indicated that PEG (6000) can be used as water stress creating agent under in vitro conditions and rice variety PR 116 was relatively tolerant to drought stress as compared to PAU 201. This study will serve as a base line for in vitro screening of drought tolerant transgenic rice.

Occurrence, biosynthesis and properties of kinetin (N6-furfuryladenine)

Abstract: In this paper we review the data on the structure and properties of N6-furfuryladenine (kinetin, K) accumulated during the last forty years. In 1955, kinetin was isolated from DNA as an artifactual rearrangement product of the autoclaving process. Subsequently, its cytokinin activity has been established, demonstrating a wide variety of biological effects, including those on gene expression, inhibition of auxin action, stimulation of calcium flux, the cell cycle, and as an anti-stress and anti-ageing compound. Recently, our views on this very well known plant hormone have changed. There are new data, which show that it occurs in cellular DNA as the product of oxidative, secondary modification and a secondary reaction of DNA. Also new results on the biological function of kinetin have been reported. Various biological effects produced by this hormone in vitro and in vivo have made kinetin even more scientifically interesting and commercially attractive as an ingredient of many beauty cosmetics.