Observations on the Fat Metabolism of Leaves II. Fats and Phosphatides of the Runner Bean (Phaseolus multiflorus)

Jordan, Ruth; Chibnall, Albert Charles

doi:10.1093/oxfordjournals.aob.a090372

Cited by 18 publications

(8 citation statements)

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“…However, in the most mature leaves the degree of unsatura- tiona rapidly decreased in S. halepense and increased rapidly in P. dactylifera. The increase with age of unsaturation of the fatty constituents is in agreement with previous work (8,13), but the significance of the rapid decrease of the iodine number with age of S. halepense is not known. It may be that as the old plant parts become desiccated, the unsaturated lipid compounds of this species are oxidized more rapidly by atmospheric oxygen.…”

Section: Introductionsupporting

confidence: 90%

“…DAHLGREN (3) studied the yield of carnauba wax from unexpanded and expanded leaves and concluded that under some conditions expanded or old leaves yield more wax per leaf than unexpanded or young leaves. Studies by SAHAi and CHIBNALL (13) on the wax of Brussels sprout, and JORDAN and CHIBNALL (8) (12), with the exception of a few cases in which the capillary rod drop melting point (9) was determined because only minute quantities of the wax samples were available. Relative hardnless, color, and odor of the waxes were also noted.…”

Section: Introductionmentioning

confidence: 99%

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The Relation of the Characteristics and Yield of Wax to Plant Age

1950

Plant Physiol.

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Section: Introductionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

The Relation of the Characteristics and Yield of Wax to Plant Age

1950

Plant Physiol.

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“…Wax components applied to leaf surfaces undergo metabolic interconversions (Kolattukudy and Liu, 1970;Cassagne and Lessire, 1975). From measurements of the amount of wax present on brussels sprout and bean plants during their growth period, Chibnall and co-workers concluded that weathering was probably the only significant reason for loss of cuticular waxes (Sahai and Chibnall, 1932;Jordan and Chibnall, 1933;Chibnall and Piper, 1934), and to date little evidence to the contrary is avail able. From measurements of the amount of wax present on brussels sprout and bean plants during their growth period, Chibnall and co-workers concluded that weathering was probably the only significant reason for loss of cuticular waxes (Sahai and Chibnall, 1932;Jordan and Chibnall, 1933;Chibnall and Piper, 1934), and to date little evidence to the contrary is avail able.…”

Section: A Degradation Of Waxesmentioning

confidence: 99%

Cutin, Suberin, and Waxes

Kolattukudy¹

1980

Lipids: Structure and Function

160

130

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“…As a measure of phosphatide phosphorus, this latter is admittedly crude, for it has been shown by Jordan and Chibnall (1933) that considerable quantities of non-phosphatide phosphorus may be extracted by this solvent. More recent work by Rewald (1936Rewald ( , 1937aRewald ( , 1937b points to the inadequacy of anyone solvent or solvent mixture for the extraction of phosphatides, and his work on "free" and "bound" phosphatides offers new opportunities in the study of phosphorus metabolism.…”

Section: Introductionmentioning

confidence: 99%

“…cit.). Jordan and Chibnall (1933) used ether alone for extracting phosphatides; thus a comparison of the alcohol-and ether-soluble phosphorus of 6 samples of leaf material from the present oat experiment is of interest (see Table 1). The extraction period was the same for each solvent.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Phosphorus Supply on The Rates of Intake of Phosphorus and Nitrogen and Upon Certain Aspects of Phosphorus Metabolism in Gramineous Plants

Williams¹

1948

Aust. Jnl. Of Bio. Sci.

194

117

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SummaryFor experiments previously described, new data are presented relating to the intake of phosphorus by gramineous plants, its distribution within the plant, and its partition in the leaves between alcohol-soluble, nucleic-acid, and "residual" phosphorus.Major determinants of the rate of intake of phosphorus by the plant are: ( a) the demand set up by the growth and normal functioning of various plant parts, and (b) the concentration of the nutrient in the medium.It is considered that the indirect effect of phosphorus treatment on growth, and hence on demand, is more important than the direct effects of external concentration of phosphorus on the rates of intake of that nutrient.Even when growth is not limited by the supply of phosphorus, the rate of intake is limited by the maximal capacity of successive plant parts for accumulation.For the oat experiment, rates of intake of phosphorus and nitrogen are expressed per unit weight of root system. With nitrogen, the supply of which was the same for all treatments, large initial effects of phosphorus treatment on the rates of intake are accounted for in terms of differences in the ratios of roots to shoots.Phosphorus-deficient oat plants derived only 30 per cent. of their inflorescence phosphorus from other plant parts; those with an excessive supply derived no less than 93 per cent. of their inflorescence phosphorus from these sources.The percentage phosphorus contents of the stems, leaves, and roots fell ultimately to lower values with a moderate supply of phosphorus than they did with the deficient supply. A more efficient re-utilization of phosphorus in the plants receiving the greater supply is favoured as an interpretation of this "dilution" effect.From an examination of the data for protein-nitrogen and nucleic-acid phosphorus in the leaves of young plants, it is concluded that the effects of phosphorus treatment on protein-nitrogen content at this stage are due primarily to variation in nucleoprotein content.With phosphorus deficiency, oat seedlings soon exhausted their seed reserves of phosphorus, and this was followed by a drastic change in the partitioning of leaf phosphorus, such that absolute nucleic-acid phosphorus was reduced to one-fifth of the value obtaining eleven days earlier, alcohol-soluble phosphorus decreased slightly, and the water-soluble fractions represented by "residual" phosphorus increased by 30 per cent. Total phosphorus was virtually unchanged in amount. During this same period of eleven days, the whole of the phosphorus intake from the medium was retained by the roots, and there was a stimulation of root growth relative to leaf growth. These facts suggest that the high root weight ratios found with phosphorus deficiency may be due to the fixation in organic forms of a greater proportion of the absorbed phosphorus, so that relatively little is available for shoot growth. The literature relating to the partitioning of phosphorus within plant tissues is discussed and, where comparisons are relevant, this is in substantial agreemen...

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Observations on the Fat Metabolism of Leaves II. Fats and Phosphatides of the Runner Bean (Phaseolus multiflorus)

Cited by 18 publications

References 0 publications

The Relation of the Characteristics and Yield of Wax to Plant Age

The Relation of the Characteristics and Yield of Wax to Plant Age

Cutin, Suberin, and Waxes

The Effects of Phosphorus Supply on The Rates of Intake of Phosphorus and Nitrogen and Upon Certain Aspects of Phosphorus Metabolism in Gramineous Plants

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