this study was conducted to choose the best species for plantation on a poor drainage soil in southern coast of caspian sea, iran. nutrient concentrations in live and senescent leaves and soil properties were compared among alnus subcordata c.a.mey (n-fixing tree), populus deltoides­ marsh. (non n-fixing tree)and taxodium distichum (l.) rich. (coniferous tree) plantations. in each of these plan...

Generalized malnutrition results in inhibition of tumorigenesis and tumor growth in experimental animal models. Neither the specific nutrient deficiency nor the mechanism has been definitely elucidated. We have shown previously that dietary sodium deprivation in rapidly growing rats retards protoplasmic growth. This effect was correlated to the extracellular fluid (ECF) volume expansion which i...

Grafting is a centuries-old technique used in plants to obtain economic benefits. Grafting increases nutrient uptake and utilization efficiency in a number of plant species, including fruits, vegetables, and ornamentals. Selected rootstocks of the same species or close relatives are utilized in grafting. Rootstocks absorb more water and ions than self-rooted plants and transport these water and...

Reduced blood flow contributes to tumour hypoxia and nutrient deprivation forcing cancer cells to adapt to ensure survival. In this issue of The EMBO Journal, Ye et al show that a stress response pathway including the eIF2 kinase GCN2 and its downstream target, the transcriptional activator ATF4, is critical for proliferation and survival of tumour cells after starvation for amino acids or gluc...

Seventy-four Angus and Angus × Hereford heifers were used in 2 successive years (yr 1, n = 43; yr 2, n = 31) to determine if luteal function of heifers during acute submaintenance feeding is related to variation in utilization of feed as determined by residual feed intake (RFI). Residual feed intake was determined for heifers beginning at 12.3 ± 0.1 mo of age in yr 1 and at 9.1 ± 0.1 mo of age ...

Considerable interest has been shown in the ability of caloric restriction (CR) to improve multiple parameters of health and to extend lifespan. CR is the reduction of caloric intake - typically by 20 - 40% of ad libitum consumption - while maintaining adequate nutrient intake. Several alternatives to CR exist. CR combined with exercise (CE) consists of both decreased caloric intake and increas...

This study aimed to assess the growth performance and nutritional status of sheep under intermittent water supply by means performance, intake, apparent digestibility nutrients, balance nitrogen. Thirty-two intact male (20.7 ± 2.63 kg, 8 months age) were distributed in a completely randomized design with 4 intervals via drinking trough (0h00, 24h00, 48h00, 72h00), replicates. The extension rest...

Certain types of foods are common trigger for bowel symptoms such as abdominal discomfort or pain in patients with inflammatory bowel disease (IBD). But indiscriminate food exclusions from their diet can lead extensive nutritional deficiencies. The aim of this study was to investigate nutritional status, food restriction and nutrient intake status in IBD patients. A total 104 patients (food exc...

There is a connection between nutrient inputs, energy-sensing pathways, lifespan variation and aging. Despite the role of metabolic enzymes in energy homeostasis and their metabolites as nutrient signals, little is known about how their gene expression impacts lifespan. In this report, we use P-element mutagenesis in Drosophila to study the effect on lifespan of reductions in expression of seve...