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Nitrogen assimilation is the formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds present in the environment. Organisms like plants, fungi and certain bacteria that can fix nitrogen gas (N 2) depend on the ability to assimilate nitrate or ammonia for their needs.
Due to their lower cost compared to plant and animal proteins, their inclusion in a diet can result in economic gain, but at too high levels cause a depression in growth and possible ammonia toxicity, as microbes convert NPN to ammonia first before using that to make protein. [6] NPN can also be used to artificially raise crude protein values ...
Plants are commonly classified as ammonium or nitrate plants according to their preferential nitrogen nutrition. [38] Usually, most of the nitrogen in soil is bound within organic compounds that make up the soil organic matter , and must be mineralized to the ammonium or nitrate form before it can be taken up by most plants.
Plants that contribute to nitrogen fixation include those of the legume family—Fabaceae— with taxa such as kudzu, clover, soybean, alfalfa, lupin, peanut and rooibos. [45] They contain symbiotic rhizobia bacteria within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. [64]
Nitrate reductase can be used to test nitrate concentrations in biofluids. [18] Nitrate reductase promotes amino acid production in tea leaves. [19] Under south Indian conditions, it is reported that tea plants sprayed with various micronutrients (like Zn, Mn and B) along with Mo enhanced the amino acid content of tea shoots and also the crop ...
Nitrates affect the nitrate‐nitrite‐nitric oxide pathway, in which nitrates are recycled in blood and tissue to produce nitric oxide — an important molecule for vascular health and blood flow.
Nitrate levels above 10 mg/L (10 ppm) in groundwater can cause 'blue baby syndrome' (acquired methemoglobinemia). [84] The nutrients, especially nitrates, in fertilizers can cause problems for natural habitats and for human health if they are washed off soil into watercourses or leached through soil into groundwater. [85]
Beets. Wong also suggests beets to lower blood pressure, explaining that they are rich in inorganic nitrate, which converts to nitric oxide. As a vasodilator, nitric oxide widens and relaxes blood ...