Sentence examples for essential nitrogen from inspiring English sources
An unpredictable food supply, scant access to soil and the essential nitrogen it holds: no wonder young roaches must know how to scam.
In contrast, traditional small coffee farmers grow their beans under a canopy of tropical trees, which provide shade and essential nitrogen, and fertilize their soil naturally with leaf litter.
Reef building corals have essential nitrogen needs and, thriving in nutrient-poor tropical waters16 where nitrogen is a major limiting nutrient for primary productivity17, they have developed specific adaptations for conserving this element.
The use of protein hydrolysates in these products is based on the premise that predigested proteins, when fed as amino acids and peptides, provide essential nitrogen in a non-antigenic, easily absorbed form.
Their enzymes for taking up essential nitrogen in the form of nitrate are built around an iron atom and a molybdenum atom.
The availability of nitrogen is one of the most limiting factors for plant growth and fixed nitrogen from the legume/rhizobial symbiosis provides an essential nitrogen source for agriculture and natural ecosystems.
Also in Mesorhizobium loti, the rpoN2 gene located on the symbiosis island has been shown to be essential for nitrogen fixation, whereas the chromosomally located rpoN1 gene is dispensable for nitrogen fixation [ 11].
The co-occurrence of these six nif genes, known to be essential for nitrogen fixation in characterized systems, has led us to propose a requirement for a minimum gene set for nitrogen fixation that can be used as an in silico search tool for the identification of additional diazotrophs.
The protozoans are a fundamental component in recycling essential nutrients (nitrogen and phosphorus) to the phytoplankton.
Just a few trowels full of compost can do wonders because it adds an essential nutrient: nitrogen.
In addition there is evidence that amino acid cycling is essential for nitrogen fixation at least in some rhizobial strains13,14.
