Deficiency phosphorus

J. F. Johnson, D. L. Allan, C. P. Vance, and G. Weiblen, Root carbon dioxide fixation by phosphorus-deficient Lupinus albus. Plant Physiol. 7/2 19 (1996). 

J. Wasaki, M. Ando, K. Ozawa, M. Omura, M. Osaki, H. Ito, H. Matsui, and T. Tadano, Properties of secretory acid phosphatase from lupin roots under phosphorus-deficient conditions, Plant Nutrition for Sustainable Food Production and Environment (T, Ando, K. Fujita, T. Mae, H. Matsumoto, S. Mori, and J. Sekiya, eds), Kluwer Academic Publishers, Dordrecht, 1997, p. 295. 

F. S. Zhang, J. Ma, and Y. P, Cao, Phosphorus deficiency enhances root exudation of low-molecular weight organic acids and utilization of sparingly soluble inorganic phosphates by radish (Raphanus. sativus L.) and rape Bra.ssica napus L.) plants. 

Phosphorus (P) is one of the major limiting factors for plant growth in many soils. Plant availability of inorganic phosphorus (Pi) can be limited by formation of sparingly soluble Ca phosphates, particularly in alkaline and calcareous soils by adsorption to Fe- and Al-oxide surfaces in acid soils and by formation of Fe/ Al-P complexes with humic acids (94). Phosphorus deficiency can significantly alter the composition of root exudates in a way that is, at least in some plant species, related to an increased ability for mobilization of sparingly soluble P sources (29,31,71). 

G. Neumann, A. Massonneau, E. Martinoia, and V. Romheld, Physiological adaptations to phosphorus deficiency during proteoid root development in white lupin. Planta 208 313 (1999). 

M. Li, T. Shinano, and T. Tadano, Distribution of exudates of lupin roots in the rhizosphere under phosphorus deficient conditions. Soil Sci. Plant Nutr. 43 237 (1997). 

G. Neumann and V. Romheld, Root excretion of carboxylic acids and protons in phosphorus-deficient plants. Plant Soil 2// 121 (1999). 

H. Heuwinkel, E. A. Kirkby, J. Le Bot, and H. Marschner, Phosphorus deficiency enhances molybdenum uptake by tomato plants. J. Plant Niitr. 15 549 (1992). 

Purchase (153, 154), using root washings of H. filipendula, found no evidence of toxicity to Nitrobacter and Nitrosomonas. Since Nitrobacter is more sensitive to phosphorus deficiency than Nitrosomonas, and because phosphorus deficiency is sufficiently severe in some soils to restrict growth, its ability to compete for nitrogen is diminished. Inhibition was found in the root extract... 

Miiller R, Morant M, Jarmer H, Nilsson L, Nielsen TH (2007) Genome-wide analysis of the ara-bidopsis leaf transcriptome reveals interaction of phosphate and sugar metabolism. Plant Physiol 143 156-171. doi http //www.plantphysiol.org/cgi/content/abstract/143/l/156 Neumann G, Romheld V (1999) Root exudation of carboxylic acids and protons in phosphorus-deficient plants. Plant Soil 211 121-130... 

Neumann G, Massonneau A, Langlade N, Dinkelaker B, Hengeler C, Romheld V, Martinoia E (2000) Physiological aspects of cluster root function and development in phosphorus-deficient white lupin (Lupinus albus L.). Ann Bot 85 909-919. doi http //aob.oxfordjournals.org/cgi/ content/abstract/85/6/909... 

Composition of calcium and phosphorus deficient mineral mix from TEKLAD ( 170913) is given in Table III. 

Brandon AM, Mikkelsen DS. 1979. Phosphorus transformations in alternately flooded California soils. I. Cause of plant phosphorus deficiency in rice rotation crops and correction methods. Soil Science Society of America Journal 43 989-994. 

Kirk GJD, Le van Du. 1997. Changes in rice root architecture, porosity, and oxygen and proton release under phosphorus deficiency. New Phytologist 135 191-200. 

Phosphorus deficiency (on tomato leaves), often seen in acidic soil. 

Dry environmental quality PetroKlenz must be reconstituted with water and made into a slurry. The organisms will be ineffective if they are applied as dry cultures over the oil. The effective use of PetroKlenz in a biotreatment program is dependent upon the environmental conditions present at the site. Adverse conditions such as cold temperatures, oxygen, nitrogen, or phosphorus-deficient water, chemical toxic load, highly acidic or alkaline conditions, or excessive dilution of biomass by tides and currents, may retard or prevent biodegradation. 

The potential for N deposition to contribute to the eutrophication of freshwater lakes is probably quite limited. Eutrophication by atmospheric inputs of N is a concern only in lakes that are chronically N-limited. This condition occurs in some lakes that receive substantial inputs of anthropogenic P and in many lakes where both P and N are found in low concentrations (e.g., Table III). In the former case the primary dysfunction of the lakes is an excess supply of P, and controlling N deposition would be an ineffective method of water-quality improvement. In the latter case the potential for eutrophication by N addition (e.g., from deposition) is limited by low P concentrations additions of N to these systems would soon lead to N-sufficient, and phosphorus-deficient, conditions. The results of the NSWS shown in Table III, for example, can be used to calculate the increase in N concentration that would be required to push N-limited lakes into P limitation (assuming total P concentrations do not change). An increase of only... 

Deficiencies of available phosphorus in soils are a major cause of limited crop production. Phosphorus deficiency is regarded by some authorities as the most critical mineral deficiency in grazing livestock. 

PHOSPHORUS (In Biological Systems). Phosphorus is required by every living plant and animal cell. Deficiencies of available phosphorus in soils are a major cause of limited crop production, Phosphorus deficiency is probably the most critical mineral deficiency in grazing livestock. Phosphorus, as orthophosphate or as the phosphoric acid ester of organic compounds, has many functions in the animal body. As such, phosphorus is an essential dietary nutrient. 

Phosphorus deficiencies are not common in humans and most other species, but they have been observed in ruminants, Symptoms of the deficiency are loss of appetite and a depraved appetite (termed pica )... 

Cereals and meats are the major sources of phosphorus in human diets. Phosphorus deficiencies in most regions have not been a serious problem in human nutrition. Insofar as food is concerned, the primary value of phosphorus fertilizers is that they generally increase the total food production not die content of phosphorus in the food per se,... 

When phosphorus fertilizers are added to soils deficient in available forms of the element, increased crop and pasture yields ordinarily follow. Sometimes the phosphorus concentration in the crop is increased, and this increase may help to prevent phosphorus deficiency in the animals consuming the crop, but this is not always so. Some soils convert phosphorus added in fertilizers to forms that are not available to plants. On these soils, very heavy applications of phosphorus fertilizer may be required. Some plants always contain low concentrations of phosphorus even though phosphorus availability from the soil may be good. See also Fertilizer. 

Stewart AJ, Chapman W, Jenkins GI, Graham I, Martin T, Crozier A. 2001. The effect of nitrogen and phosphorus deficiency on flavonol accumulation in plant tissues. Plant Cell Env 24 1189-1197. 

Zakhleniuk OV, Raines CA, Lloyd JC. 2001. Pho3 A phosphorus deficient mutant of Arabidopsis thaliana (L.) Heynh. Planta 212 529-534. 

Bieleski, R.L. Johnson, P.N. (1972). The external location of phosphatase activity in phosphorus-deficient Spirodela oligorrhiza. Australian Journal of Biological Sciences 25, 707-20. 

Kummerova, M. (1986). Localization of acid phosphatase in maize root under phosphorus deficiency. Biologia Plantarum (Praha) 28, 270-4. 

Reid, M.S. Bieleski, R.L. (1970). Changes in phosphatase activity in phosphorus-deficient spirodela. Planta 94, 273-81. 

Titanium Phosphides. The titanium phosphides (154) include Ti3P [12037-66-0], Ti5P3, and TiP (163). Titanium monophosphide [12037-65-9], TiP, can be prepared by heating phosphine with titanium tetrachloride or titanium sponge. Alternatively, titanium metal may be heated with ph osphorus in a sealed tube. The gray metallic TiP is slighdy phosphorus-deficient (TiP095), has a density of 408(0) kg/m3, and displays considerable... 

After 3 months, the plants grown under phosphorus-deficient conditions were evaluated. 

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