p-Carotene (pro-vitamin A) is a lipid-soluble antioxidant capable of quenching singlet oxygen and scavenging free-radical species [ 1-31, Epidemiological studies have established a correlation between p-carotene dietary supplementation with a reduced risk of cancer and heart disease thus providing a basis for clinical investigation [4, 51. The antioxidant properties of pcarotene, perhaps in com...

Watermelon (Citrullus lanatus) is a globally important crop belonging to the family Cucurbitaceae. The grafting technique is commonly used to improve its tolerance to stress, as well as to enhance its nutrient uptake and utilization. It is believed that miRNA is most likely involved in its nutrient-starvation response as a graft-transportable signal. The quantitative real-time reverse transcrip...

BACKGROUND Chlorella is one of the few microalgae employed for human consumption. It typically has a high protein content, but it can also accumulate high amounts of lipids or carbohydrates under stress conditions and, for this reason, it is of interest in the production of biofuels. High production costs and energy consumption are associated with its cultivation. This work describes a strategy...

The enucleation technique has been applied to Amoeba proteus by several laboratories in attempts to determine whether the cytoplasm is capable of nucleus-independent ribonucleic acid synthesis. This cell is very convenient for micrurgy, but its use requires a thorough starvation period to eliminate the possibility of metabolic influence by food vacuoles and frequent washings and medium renewal ...

Every living cell is composed of macromolecules such as proteins, DNA, RNA, and pigments. The ratio between these macromolecular pools depends on the allocation resources within organism to different physiological requirements, in turn affects biogeochemical cycles elements carbon, nitrogen, phosphorus. Here, we present detailed measurements composition Prochlorococcus MIT9312, a representative...

I n the newborn baby starvation implies the failure to consume and absorb enough calories and other materials to satisfy fully the requirements for growth as well as maintenance. If surgical treatment is necessary, involving the infliction of injury, these basic requirements are increased in order to provide for the resulting larger energy consumption and for the inflammatory response. Although...

Interactions between different axes of an organism's niche determine the evolutionary trajectory of a population. An extreme case of these interactions is predicted from ecological theory in Liebig's law of the minimum. This law states that in environments where multiple nutrients are in relatively low concentrations, only one nutrient will affect the growth of the organism. This implies that t...

Previous studies have shown that the blast fungus, Magnaporthe oryzae, may experience nitrogen starvation during infection of its plant host (rice,Oryza sativa). Here, we studied the expression of seven genes encoding cysteine-rich proteins with N-terminal signal peptides during nitrogen limitation and throughout the infection process. Some genes were upregulated to a greater extent in weak pat...

The effects of starvation and subsequent re-feeding on compensatory growth performance, blood serum metabolites and IGF-ImRNA expression in liver and muscle were investigated in juvenile Persian sturgeon. Growth indices including body weight, SGR, CF, and HSI significantly decreased after starvation. However, after re-feeding sturgeons that were starved for 1 week reached the same weight as the...