Influence of fertilizer treatment on apple fruit composition and physiology.  II. Influence on respiration rate and contents of nitrogen, phosphorus, and titratable acidity

Letham, DS

doi:10.1071/ar9691073

Cited by 24 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(v) Phosphorus and phospholipids. Total phosphorus was estimated by two methods: (i) colorimetric estimation of the phosphate after acid digestion (19) and (ii) uniformly labeling rodlets with 32P by incorporating 32Pi (specific activity, ca. 200,000 cpm/4mol) into the initial growth medium.…”

Section: Methodsmentioning

confidence: 99%

Purification and chemical characterization of the rodlet layer of Neurospora crassa conidia

Beever¹,

Redgwell²,

Dempsey³

1979

J Bacteriol

View full text Add to dashboard Cite

The rodlet layer of Neurospora crassa macroconidia has been purified and chemically characterized. Sheets of rodlets were released from the conidial surface by vigorously shaking conidia in water. Conidia were removed by filtration and low-speed centrifugation, and the rodlets were recovered from the supernatant by high-speed centrifugation. The rodlet pellet comprised 1.9% of the initial dry weight. Chemical analysis was hampered by the insolubility of the rodlets. They were not solubilized by heating in various protein-denaturing buffers and were only partially dissolved by heating in 1 M NaOH at 100°C for 5 min. Nevertheless, they were found to be largely composed of protein (91%, based on total nitrogen). The major amino acids in acid hydrolysates were aspartic acid, glycine, serine, alanine, half-cystine, and valine. Glucosamine was not detected in acid hydrolysates. The sulfur content was 2.5%, and this could be accounted for in half-cystine and methionine. Carbohydrate comprised just over 2%. The phosphorus content was 0.21%, of which less than one-third was accounted for in phospholipid. The total fatty acid content was 1.0%, most of which could be accounted for by the fatty acids of the phospholipids. 1063 on August 2, 2020 by guest

show abstract

Section: Methodsmentioning

confidence: 99%

Purification and chemical characterization of the rodlet layer of Neurospora crassa conidia

Beever¹,

Redgwell²,

Dempsey³

1979

J Bacteriol

View full text Add to dashboard Cite

show abstract

“…All extracts (inorganic phosphorus, ester phosphorus, EDTA phosphorus, nucleic acid phosphorus, and lipid phosphorus) and the residue were digested first in nitric then in sulphuric acid, diluted and analysed colorimetrically in comparison with KH2PO4 standards that were similarly digested (Letham 1969). The inorganic-phosphorus and EDTA-phosphorus values were added together in calculations to give the inorganic-phosphorus values presented in the results.…”

Section: Fractionation Of Compounds Ofphosphorusmentioning

confidence: 99%

Growth, Phosphate Absorption, and Phosphorus Chemical Fractions in Two Chionochloa Species

Chapin¹,

FOLLETTt²,

O'CONNORt³

1982

The Journal of Ecology

View full text Add to dashboard Cite

“…Caradus and Dunlop 1978, Evans fertilizer requirements (Wright 1976, Jung 1978 has 1980), despite the relatively high heritability (30^0%) led to a search for varieties that are productive on infer-of nutritional characteristics such as nutrient absorption tile soils due to either (a) high nutrient absorption rates rate (Vose 1963). Ecological studies indicate that at low soil concentrations (Lindgren et al 1977, Nielsen non-agricultural species typical of infertile soils generand Barber 1978) or (b) more efficient use of nutrients ally have slow growth rates, moderately low rates of (i.e. produce tnore biomass per unit nutrient; White nutrient absorption, and higher nutrient concentrations 1972, Gerloff 1976).…”

mentioning

confidence: 99%

Mild phosphorus stress in barley and a related low‐phosphorus‐adapted barleygrass: Phosphorus fractions and phosphate absorption in relation to growth

Chapin

Bieleski²

1982

Physiologia Plantarum

114

View full text Add to dashboard Cite

Barleygrass (Hordeum leporinum) from Australian low‐P (phosphorus) soils and commercial barley (H. vulgare) with high fertilizer requirements were grown in solution culture at 3 levels of P supply. The high‐P‐adapted barley produced more biomass at all levels of P supply and was more responsive to added P in terms of rate of tillering, rate of leaf production, final leaf size, and therefore total shoot weight compared to barleygrass. In both species root: shoot ratio decreased in response to improved tissue P status, even at P levels where total biomass did not respond to P supply. Removal of endosperm reserves of barley reduced total biomass to a greater extent than it altered phosphate absorption rate, thus increasing tissue P status and making plants less responsive to added P. Similarly, barleygrass had a slower growth rate but a comparable P absorption rate to that of barley. Thus barleygrass also accumulated tissue P and was unresponsive to added P. All phosphorus chemical fractions increased in response to improved tissue P status, but to differing extents (inorganic‐P > nucleic acid‐P > lipid‐P > ester‐P), suggesting that all P fractions (particularly inorganic P) serve, in part, a storage function. Both barleygrass and barley without endosperm had higher concentrations of all P fractions (particularly inorganic P) than did unaltered barley, but this was due entirely to their higher P status (due to slow growth) rather than to any major difference in P metabolism between species. We conclude that slow growth is more important than interspecific differences in P metabolism, P absorption, or efficiency of P utilization in explaining the success of barleygrass and other low‐P‐adapted species on infertile soils.

show abstract

Influence of fertilizer treatment on apple fruit composition and physiology. II. Influence on respiration rate and contents of nitrogen, phosphorus, and titratable acidity

Cited by 24 publications

References 0 publications

Purification and chemical characterization of the rodlet layer of Neurospora crassa conidia

Purification and chemical characterization of the rodlet layer of Neurospora crassa conidia

Growth, Phosphate Absorption, and Phosphorus Chemical Fractions in Two Chionochloa Species

Mild phosphorus stress in barley and a related low‐phosphorus‐adapted barleygrass: Phosphorus fractions and phosphate absorption in relation to growth

Contact Info

Product

Resources

About