scholarly journals The Uptake of Orthophosphate and Its Incorporation into Organic Phosphates Along Roots of Pinus Radiata

1969 ◽  
Vol 22 (5) ◽  
pp. 1125 ◽  
Author(s):  
GD Bowen
Keyword(s):  
Nucleic Acid ◽  
Nutrient Uptake ◽  
Pinus Radiata ◽  
Phosphate Uptake ◽  
Soluble Fraction ◽  
Acid Fraction ◽  
Erroneous Interpretation ◽  
Automatic Scanning ◽  
Different Parts ◽  
High Phosphate

An automatic scanning-recording method showed that relative incorporation of [32P]orthophosphate along sterile pine roots into both the nucleic acid fraction and the phospholipid-phosphoprotein fraction was usually much greater in the apical 1-and 2-cm segments than in the remainder of the root. Relative incorporation into phosphate fractions was modified considerably by the phosphate uptake and phosphate status at different parts of the root_ Relative incorporation into the readily acid-soluble fraction was greatest at sites of greatest phosphate uptake along the root, and was less with phosphate-deficient plants than with high-phosphate plants. Description of root behaviour as an average of the entire root is inadequate and is likely to lead to erroneous interpretation of nutrient uptake and use by roots_

Calcium stimulation of phosphate absorption by annual legumes

1970 ◽  
Vol 21 (4) ◽  
pp. 601 ◽  
Author(s):  
AD Robson ◽  
DG Edwards ◽  
JF Loneragan
Keyword(s):  
Phosphate Uptake ◽  
Trifolium Subterraneum ◽  
Partial Explanation ◽  
Phosphate Absorption ◽  
Annual Legumes ◽  
Soil Solutions ◽  
Calcium Stimulation ◽  
Medicago Species ◽  
Absorption Sites ◽  
High Phosphate

At calcium and phosphate concentrations within ranges commonly encountered in soil solutions, increasing calcium concentration in flowing culture solutions markedly increased phosphate absorption by several annual legumes. Calcium increased phosphate uptake relatively more at low than at high phosphate concentration. The effect of calcium was greater for two Medicago species than for two cultivars of Trifolium subterraneum and is suggested as at least a partial explanation for the greater sensitivity of Medicago to soil acidity and its greater tolerance to soil alkalinity than Trifolium subterraneum. Pretreatment at different calcium levels had no effect on phosphate absorption, while transfer to solutions of different calcium levels caused an immediate response in phosphate uptake. These results indicate that calcium had a direct effect on phosphate absorption, rather than an indirect effect through root morphology or anatomy. It is suggested that calcium increased phosphate absorption by screening electronegative charges on the roots, thus increasing the accessibility of absorption sites to phosphate.

Insulin and incorporation of radioactivity into nucleic acid fraction of isolated diaphragm

1960 ◽  
Vol 199 (4) ◽  
pp. 719-721 ◽  
Author(s):  
Ira G. Wool
Keyword(s):  
Nucleic Acid ◽  
Nucleic Acids ◽  
Glucose Concentration ◽  
Orotic Acid ◽  
Acid Fraction ◽  
Rat Diaphragm ◽  
Isolated Rat

Insulin in vitro stimulated the incorporation into the nucleic acid fraction of isolated rat diaphragm of radioactivity from d-glucose-U-C14, adenine-8-C14 and orotic acid-6-C14; insulin had no effect on the incorporation of thymine-2-C14 into muscle nucleic acids. Insulin enhanced the incorporation into nucleic acids of C14 from adenine and orotic acid in the absence of added glucose, and incorporation of adenine-8-C14 was not influenced by glucose concentration over the range 0–600 mg %.

High phosphate uptake requirements of the scleractinian coral Stylophora pistillata

2011 ◽  
Vol 214 (16) ◽  
pp. 2749-2754 ◽  
Author(s):  
C. Godinot ◽  
R. Grover ◽  
D. Allemand ◽  
C. Ferrier-Pages
Keyword(s):  
Scleractinian Coral ◽  
Phosphate Uptake ◽  
Stylophora Pistillata ◽  
High Phosphate

scholarly journals Aplikasi Mikoriza Arbuskula Untuk Meningkatkan Serapan Fosfat, Pertumbuhan Dan Produksi Tanaman Bawang Merah (Allium ascalonicum L.)

2019 ◽  
Vol 15 (1) ◽  
pp. 59
Author(s):  
Muhammad Mujibur Rahman ◽  
Akhmad Rizalli Saidy ◽  
Chatimatun Nisa
Keyword(s):  
Arbuscular Mycorrhiza ◽  
Nutrient Uptake ◽  
Quartz Sand ◽  
Phosphate Uptake ◽  
Growth Yield ◽  
Dry Weight ◽  
Efficient Treatment ◽  
P Fertilizer ◽  
Nutrient Fertilization ◽  
The University

One of the problems in phosphate nutrient fertilization is a low level of efficiency, so the application of arbuscular mycorrhiza is often done to increase phosphate uptake. In this study mycorrhizal was applied to shallots which were given P fertilizer to assess the effect of mycorrhizal applications on growth, yield, and phosphate uptake. This research was carried out at the Faculty of Agriculture's Greenhouse of the University of Lambung Mangkurat Banjarbaru from March to May 2016. The seed of shallot was grown on 5 kg of soil and quartz sand (3:1) fertilized by P (0, 50, 100, 150, 200 and 250 kg SP-36 ha-1) and applied with mycorrhiza (without and with 10 g of plant-1 mycorrhizal inoculum) at planting. The observations made after 75 days after planting showed that the application of arbuscular mycorrhiza was effected to improve several observation variables, namely plant dry weight, bulb dry weight, phosphate nutrient uptake, and phosphate efficiency. The application of mycorrhiza at phosphate doses of 250 kg SP-36 ha-1 can increase plant dry weight by 97% and bulb dry weight by 203% compared to without mycorrhiza. Whereas the application of mycorrhiza at a phosphate dose of 100 kg SP-36 ha-1 is the best and most efficient treatment to increase phosphate nutrient uptake and phosphate efficiency. The results of this study show that the application of mycorrhizal can increase nutrient uptake of phosphate which ultimately increases the growth and production of shallot plants. 

BIOSYNTHESIS OF NUCLEOTIDES IN WHEAT: III. PURINE AND PYRIMIDINE NUCLEOTIDES FROM P32-LABELLED PHOSPHATE

1965 ◽  
Vol 43 (2) ◽  
pp. 245-250 ◽  
Author(s):  
H. Robern ◽  
D. Wang ◽  
E. R. Waygood
Keyword(s):  
Perchloric Acid ◽  
Chromatographic Analysis ◽  
Soluble Fraction ◽  
Acid Fraction ◽  
Pyrimidine Nucleotides ◽  
Free Nucleotides ◽  
Wheat Embryos ◽  
Purine And Pyrimidine Nucleotides

Phosphate labelled with P32 was fed to viable wheat embryos with and without 5-amino-4-imidazole carboxamide (AICA). The cold perchloric acid fraction was treated with Norit A; the adsorbed nucleotides were eluted by pyridine–alcohol and subjected to chromatographic analysis for identification. Approximately 30% of the label in the soluble fraction was incorporated into identifiable purine and pyrimidine nucleotides. AICA had no effect on the amount of incorporation. This study shows the existence of a pool of free nucleotides in wheat embryos.

Changes of host cell infiltration into meth a fibrosarcoma tumor during the course of regression induced by injections of a BCG nucleic acid fraction

1992 ◽  
Vol 14 (5) ◽  
pp. 773-782 ◽  
Author(s):  
Etsuro Kuramoto ◽  
Norimitsu Watanabe ◽  
Daiji Iwata ◽  
Osamu Yano ◽  
Shizuo Shimada ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Host Cell ◽  
Cell Infiltration ◽  
Acid Fraction

scholarly journals In SituInfiltration of Natural Killer-Like Cells Induced by Intradermal Injection of the Nucleic Acid Fraction from BCG

1989 ◽  
Vol 33 (11) ◽  
pp. 929-940 ◽  
Author(s):  
Etsuro Kuramoto ◽  
Shin-Ichi Toizumi ◽  
Shizuo Shimada ◽  
Tohru Tokunaga
Keyword(s):  
Nucleic Acid ◽  
Natural Killer ◽  
Intradermal Injection ◽  
Acid Fraction
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