Helping plant nurseries reduce runoff

You may have heard how excess nutrients, such as phosphorus, can run off of crop fields. This can cause harm when the nutrients end up in rivers and lakes. However, there are other sources of excess nutrients you might not ...

Coated seeds may enable agriculture on marginal lands

Providing seeds with a protective coating that also supplies essential nutrients to the germinating plant could make it possible to grow crops in otherwise unproductive soils, according to new research at MIT.

Shark skin microbiome resists infection

A survey of the shark skin microbiome provides the first step toward understanding the remarkable resilience of shark wounds to infection.

Imaging host-pathogen battle for metal

Bacterial pathogens require nutrient metals to survive and cause disease, and hosts try to protect themselves by hiding metals away—a process called "nutritional immunity." Bacteria have evolved multiple strategies for ...

How Antarctic krill fertilize the oceans and even store carbon

Krill are best known as whale food. But few people realize that these small, shrimp-like creatures are also important to the health of the ocean and the atmosphere. In fact, Antarctic krill can fertilize the oceans, ultimately ...

The structure of master growth regulator

A team of Whitehead Institute scientists has for the first time revealed the molecular structure of a critical growth regulator bound to its partner proteins, creating a fine-grained view of how they interact to sense nutrient ...

Earthworm population triples with use of cover crops

Research from Cranfield University has found that using cover crops to protect soil and introduce organic matter increases earthworm numbers and provides financial savings for farmers.

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Nutrient

A nutrient is a chemical that an organism needs to live and grow or a substance used in an organism's metabolism which must be taken in from its environment. They are used to build and repair tissues, regulate body processes and are converted to and used as energy. Methods for nutrient intake vary, with animals and protists consuming foods that are digested by an internal digestive system, but most plants ingest nutrients directly from the soil through their roots or from the atmosphere.

Organic nutrients include carbohydrates, fats, proteins (or their building blocks, amino acids), and vitamins. Inorganic chemical compounds such as dietary minerals, water, and oxygen may also be considered nutrients. A nutrient is said to be "essential" if it must be obtained from an external source, either because the organism cannot synthesize it or produces insufficient quantities. Nutrients needed in very small amounts are micronutrients and those that are needed in larger quantities are called macronutrients. The effects of nutrients are dose-dependent and shortages are called deficiencies.

See healthy diet for more information on the role of nutrients in human nutrition.

This text uses material from Wikipedia, licensed under CC BY-SA