Effect of the phenylurea cytokinin 4-PU-30 on the growth and protein composition of maize seedlings

Stefanov, B.; Iliev, L.; Popova, N. N.

doi:10.1007/bf00226042

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…Probably nevertheless of high concentration of 4PU-30 used for preliminary soaking of seeds before germination, some of protease inhibitors are blockaded, their action is detained, and this leads to enlargement of seedlings growth at this important initial period of plant development. Until now it is unsolved problem how many types of proteolytic enzymes are involved in degradation of storage proteins, what is the temporal and spatial relationship between the appearance of enzyme activities and the degradation of storage proteins (23,26). What kind of proteases are present in resting seeds and in germinating seeds and how is the expression of these enzymes controled is also unclear (14,23).…”

Section: Resultsmentioning

confidence: 99%

“…Until now it is unsolved problem how many types of proteolytic enzymes are involved in degradation of storage proteins, what is the temporal and spatial relationship between the appearance of enzyme activities and the degradation of storage proteins (23,26). What kind of proteases are present in resting seeds and in germinating seeds and how is the expression of these enzymes controled is also unclear (14,23). We hope that our results supplement the characterization of germination processes, especially these connecting with different types of proteolytic activity and nitrogen degradation and transportation.…”

Section: Resultsmentioning

confidence: 99%

“…BAP and 4PU-30 have been implicated in the regulation of many physiological and biochemical processes including seed germination, protein synthesis, stomatal function, dormancy ect (14,23). As antagonists in many metabolic events have been indicated ABA and BAP (13,25).…”

Section: Inhibitory Effect Of Some Plant Introductionmentioning

confidence: 99%

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Inhibitory Effect of Some Plant Growth Regulators and Chlorsulfuron on Growth, Protein Composition and Proteolytic Activity of Maize Seedlings

Petkova

Popova

Angelova

et al. 2003

Biotechnology & Biotechnological Equipment

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The well known inhibitory effect of abscisic acid (ABA) on growth and protein mobilization was confirmed. In general benzylaminopurine (BAP) is known as a stimulator of plant growth. However in very high concentration BAP provoked a little suppression of plant growth and of activity of some proteolytic enzymes. Irrespective of this a faster hydrolysis of storage proteins in BAP treated seeds was detected. Similar results to BAP action after N 1 -(2-chloro-4-pyridyl)-N 2 phenylurea (4PU-30) treatment were obtained. Data for growth, proteolytic activity and protein content of maize seedlings treated with in an identical high concentration enlarged our knowledge for their relationship and supported the assumption for antagonistic action of these agents with very strong structural similarity. As CS is newly developed and widely used herbicide these results have not only theoretical but also practical significance. Abbreviations:ABA

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Inhibitory Effect of Some Plant Growth Regulators and Chlorsulfuron on Growth, Protein Composition and Proteolytic Activity of Maize Seedlings

Petkova

Popova

Angelova

et al. 2003

Biotechnology & Biotechnological Equipment

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“…1 and 2). Stefanov et al (1994) also reported a shift in the DW and a drop in the FW of maize seedlings after the application of 4-PU-30. Zheleva et al (1994) observed a stimulating effect of putrescine (1 mM) on the FW, DW, and leaf area of pea (Pisum sativum L.) seedlings, grown hydroponically.…”

Section: Discussionmentioning

confidence: 99%

“…A lack of effect of putrescine on the chlorophyll content was observed by Zheleva et al (1994) using pea seedlings, and by Alexieva (1996) in experiments with wheat seedlings. 4-PU-30 elevated chlorophyll and total nitrogen content in maize leaves (Stefanov et al 1994). However, the close relation between lipid peroxidation and chlorophyll level is well known (Dhindsa et al 1981).…”

Section: Discussionmentioning

confidence: 99%

Effect of Putrescine, 4-PU-30, and Abscisic Acid on Maize Plants Grown under Normal, Drought, and Rewatering Conditions

Todorov

Alexieva

Karanov

1998

J Plant Growth Regul

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The experiments were carried out with maize (Zea mays L.) seedlings, hybrid Kneja 530, grown hydroponically in a growth chamber. Twelve-day-old plants were foliar treated with putrescine, N1-(2-chloro-4-pyridyl)-N2-phenylurea (4-PU-30), and abscisic acid (ABA) at concentrations of 10(-5) m. Twenty-four hours later the plants were subjected to a water deficit program, induced by 15% polyethylene glycol (PEG; molecular weight, 6,000). Three days after drought stress half of the plants were transferred to nutrient solution for the next 3 days. The effects of the water shortage, rewatering, and plant growth regulator (PGR) treatment on the fresh and dry weights, leaf pigment content, proline level, relative water content (RWC), transpiration rate, activities of catalase and guaiacol peroxidase, hydrogen peroxide content, and level of the products of lipid peroxidation were studied. It was established that the application of PGRs alleviated to some extent the plant damage provoked by PEG stress. At the end of the water shortage program the plants treated with these PGRs possessed higher fresh weight than drought-subjected control seedlings. It was found also that putrescine increased the dry weight of plants. Under drought, the RWC and transpiration rate of seedlings declined, but PGR treatment reduced these effects. The accumulation of free proline, malondialdehyde, and hydrogen peroxide was prevented in PGR-treated plants compared with the water stress control. The results provided further information about the influence of putrescine, 4-PU-30, and ABA on maize plants grown under normal, drought, and rewatering conditions. Key Words. Maize-Putrescine-4-PU-30-ABA-Drought

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Influence of GA3 and 4-PU-30 on Leaf Protein Composition, Photosynthetic Activity, and Growth of Maize Seedlings

Stefanov¹,

Iliev²,

Popova³

1998

Biologia plant.

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Effect of the phenylurea cytokinin 4-PU-30 on the growth and protein composition of maize seedlings

Cited by 7 publications

References 21 publications

Inhibitory Effect of Some Plant Growth Regulators and Chlorsulfuron on Growth, Protein Composition and Proteolytic Activity of Maize Seedlings

Inhibitory Effect of Some Plant Growth Regulators and Chlorsulfuron on Growth, Protein Composition and Proteolytic Activity of Maize Seedlings

Effect of Putrescine, 4-PU-30, and Abscisic Acid on Maize Plants Grown under Normal, Drought, and Rewatering Conditions

Influence of GA3 and 4-PU-30 on Leaf Protein Composition, Photosynthetic Activity, and Growth of Maize Seedlings

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