Symbioses between sponges and algae are abundant in the nutrient-poor waters of tropical reefs, yet very little is known of the nutritional interactions that may promote this abundance. We measured nitrogen flux between the sponge Haliclona cymiformis and its symbiotic partner, the rhodophyte Ceratodictyon spongiosum, and assessed the potential importance of this flux to the symbiosis. While th...

We investigated the distributions of genetic and phenotypic variation for two Yellowstone National Park populations of the heterocyst-forming cyanobacterium Mastigocladus (Fischerella) laminosus that exhibit dramatic phenotypic differences as a result of environmental differences in nitrogen availability. One population develops heterocysts and fixes nitrogen in situ in response to a deficiency...

The expression of ferredoxin-NADP+ reductase (FNR) from Anabaena sp. PCC 7119 in heterocysts and vegetative cells has been quantified. Specific reductase activity in heterocysts was approximately 10 times higher than in vegetative cells, corresponding to the increased FNR protein content. This was confirmed by immunoquantification of the FNR protein from whole filaments of Anabaena sp. PCC 7120...

The potato is the third largest food crop, and nitrogen fertilizer important for increasing yields; however, shallow root system of potatoes causes utilization rate to be low, which results in waste environmental pollution, meaning that high efficiency breeding highly significant potatoes. In potatoes, genes with a nitrogen-deficient response should first identified, RNA-seq an efficient method...

In the course of investigating the effects of alcoholt on the liver of the rat it was found that alcohol increased the choline requirement, an effect that was independent of changes in food consumption or caloric intake.1" To explore the possibility that alcohol induced a relative deficiency of choline by altering some aspect of protein metabolism, an investigation of the effects of alcohol on ...

An increased awareness of environmental protection and sustainable production raise the necessity incorporating selection low nitrogen-tolerant winter wheat cultivars for high yield quality in breeding process. This can be assisted by using stress screening indices. Our study aimed to evaluate compare a number indices determine select most nitrogen deficiency-tolerant further breeding. The expe...