Calcium and the Control of Lignification in Tissue Cultures

Lipetz, Jacques

doi:10.1002/j.1537-2197.1962.tb14965.x

Cited by 28 publications

(3 citation statements)

References 25 publications

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“…It has been suggested that high calcium levels reduce lignification in tissue cultures by releasing peroxidase from the cell wall (Lipetz 1962;Lipetz and Garro 1965). In all low calcium treatments in the present work there was a significantly higher percentage of total peroxidase activity loosely bound to the internode cell wall than in other treatments.…”

Section: (E) Effects Of Calcium and Phosphate Levels On Wall-bound Prsupporting

confidence: 37%

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The Uptake and Effects of Calcium and Phosphate on Maturity, Lignification, and Peroxidase Activity of Wheat Internodes

Parish¹,

Miller²

1969

Aust. Jnl. Of Bio. Sci.

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Wheat (cv. Gabo) was grown in a controlled environment and supplied with various levels of calcium and phosphate. Low levels of phosphate accelerated maturity irrespective of calcium concentrations, while high phosphate levels delayed maturity. The converse applied to calcium concentrations, and phosphate effects tended to dominate those of calcium. The maturity effects partly explain the lower lignin content of plants grown with high levels of phosphate observed by other workers.Plants were harvested at the same level of maturity, viz. when the top inter· node had completed elongating. The top three internodes were analysed for calcium, phosphorus, lignin, and peroxidase.The internodes of plants grown with higher levels of phosphate contained greater amounts of phosphorus. Internode calcium, however, did not increase above a certain value irrespective of nutrient concentration. Unlike phosphorus, internode calcium was relatively immobile.Low·calcium plants contained the most lignin, but only with low phosphate treatments. The lignin content of medium and high calcium treatments was not significantly different. Increasing the phosphate level with medium and high calcium levels reduced lignification. Peroxidase specific activity was lower in low and high calcium and phosphate treatments than in controls, but there was no correlation between this activity and lignin content.Plants grown with low calcium levels had a significantly higher percentage of total peroxidase attached to the internode cell walls than other treatments. Phosphate levels did not affect the amount of wall-bound peroxidase. The percentage of soluble protein loosely bound to cell walls did not differ significantly between treatments.Phosphate apparently modifies lignification by affecting maturity, but also by some other means. Increasing the levels of calcium probably reduces lignification by releasing peroxidase from the cell wall. Phosphate effects again dominated those of calcium.

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Section: (E) Effects Of Calcium and Phosphate Levels On Wall-bound Prsupporting

confidence: 37%

“…Lipetz (1962) found that high levels of calcium reduced lignification in tissue cultures. Lipetz and Garro (1965) showed that high concentrations of calcium release peroxidase from cell walls, and they reconciled this with the effects of calcium on lignification.…”

Section: Introductionmentioning

confidence: 99%

The Uptake and Effects of Calcium and Phosphate on Maturity, Lignification, and Peroxidase Activity of Wheat Internodes

Parish¹,

Miller²

1969

Aust. Jnl. Of Bio. Sci.

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“…Mg 2+ and Mn 2+ ions ensure the functioning of PAL, of CoA-ligases, and of methyltransferases [ 100 – 103 ]. Ca 2+ -deficiency induced anthocyanin accumulation in cabbage [ 104 ] and could promote lignification [ 105 ]. The metabolism of Prunus callus tissues in vivo was affected by Ca 2+ deficiency and responded with an accumulation of phenolic stress metabolites [ 106 ].…”

Section: Environmental Nutritional Agronomic and Developmental Cluementioning

confidence: 99%

Managing Phenol Contents in Crop Plants by Phytochemical Farming and Breeding—Visions and Constraints

Treutter

2010

IJMS

187

135

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Two main fields of interest form the background of actual demand for optimized levels of phenolic compounds in crop plants. These are human health and plant resistance to pathogens and to biotic and abiotic stress factors. A survey of agricultural technologies influencing the biosynthesis and accumulation of phenolic compounds in crop plants is presented, including observations on the effects of light, temperature, mineral nutrition, water management, grafting, elevated atmospheric CO2, growth and differentiation of the plant and application of elicitors, stimulating agents and plant activators. The underlying mechanisms are discussed with respect to carbohydrate availability, trade-offs to competing demands as well as to regulatory elements. Outlines are given for genetic engineering and plant breeding. Constraints and possible physiological feedbacks are considered for successful and sustainable application of agricultural techniques with respect to management of plant phenol profiles and concentrations.

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Some Aspects of Differentiation in Cells of Picea Glauca Cultivated in Vitro

White

1967

American J of Botany

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Microscopic observation of cells of Picea glauca, grown in tissue culture under a variety of cultural conditions, reveals a series of phenomena which are believed to be associated with the development of specific types of cells recognizable in intact plants. Characteristically patterned deposits of resin drops, and strands, furrows, and channels in the cytoplasm appear to be capable of serving as templates around which cellulose and lignin may later be deposited. The cytoplasm is extruded into characteristic papillae, and cell content may be extruded slowly or ejected with force through the cell walls, through multiple pores of characteristic distribution. Material ejected from such cells condenses in characteristic extracellular patterns. All of these processes may contribute to the differentiation of recognizable distinct cell types.

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Calcium and the Control of Lignification in Tissue Cultures

Cited by 28 publications

References 25 publications

The Uptake and Effects of Calcium and Phosphate on Maturity, Lignification, and Peroxidase Activity of Wheat Internodes

The Uptake and Effects of Calcium and Phosphate on Maturity, Lignification, and Peroxidase Activity of Wheat Internodes

Managing Phenol Contents in Crop Plants by Phytochemical Farming and Breeding—Visions and Constraints

Some Aspects of Differentiation in Cells of Picea Glauca Cultivated in Vitro

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