Topic
Essential nutrient
About: Essential nutrient is a research topic. Over the lifetime, 508 publications have been published within this topic receiving 18745 citations.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: In this paper, the authors proposed a method to select plants that are efficient in absorption and utilization of nutrients, which greatly enhance the efficiency of applied fertilizers, reducing cost of inputs, and preventing losses of nutrients to ecosystems.
Abstract: Invariably, many agricultural soils of the world are deficient in one or more of the essential nutrients needed to support healthy plants. Acidity, alkalinity, salinity, anthropogenic processes, nature of farming, and erosion can lead to soil degradation. Additions of fertilizers and/or amendments are essential for a proper nutrient supply and maximum yields. Estimates of overall efficiency of applied fertilizer have been reported to be about or lower than 50% for N, less than 10% for P, and about 40% for K. Plants that are efficient in absorption and utilization of nutrients greatly enhance the efficiency of applied fertilizers, reducing cost of inputs, and preventing losses of nutrients to ecosystems. Inter- and intra-specific variation for plant growth and mineral nutrient use efficiency(NUE) are known to be under genetic and physiological control and are modified by plant interactions with environmental variables. There is need for breeding programs to focus on developing cultivars with high NUE. Iden...
1,144 citations
TL;DR: Given the importance of choline in a wide range of critical functions in the human body, coupled with less-than-optimal intakes among the population, dietary guidance should be developed to encourage the intake of ch Caroline-rich foods.
Abstract: Choline was officially recognized as an essential nutrient by the Institute of Medicine (IOM) in 1998. There is significant variation in the dietary requirement for choline that can be explained by common genetic polymorphisms. Because of its wide-ranging roles in human metabolism, from cell structure to neurotransmitter synthesis, choline-deficiency is now thought to have an impact on diseases such as liver disease, atherosclerosis, and, possibly, neurological disorders. Choline is found in a wide variety of foods. Eggs and meats are rich sources of choline in the North American diet, providing up to 430 milligrams per 100 grams. Mean choline intakes for older children, men, women, and pregnant women are far below the adequate intake level established by the IOM. Given the importance of choline in a wide range of critical functions in the human body, coupled with less-than-optimal intakes among the population, dietary guidance should be developed to encourage the intake of choline-rich foods.
932 citations
TL;DR: The current advances in research on the complex network of plant responses to low-phosphorus stress are outlined and some strategies used to manipulate genes involved in phosphate uptake, remobilization, and metabolism to develop low-Phosphate-tolerant crops are discussed, which could help in designing more efficient crops.
Abstract: Phosphorus is an essential nutrient that is required for all major developmental processes and reproduction in plants. It is also a major constituent of the fertilizers required to sustain high-yield agriculture. Levels of phosphate—the only form of phosphorus that can be assimilated by plants—are suboptimal in most natural and agricultural ecosystems, and when phosphate is applied as fertilizer in soils, it is rapidly immobilized owing to fixation and microbial activity. Thus, cultivated plants use only approximately 20–30% of the applied phosphate, and the rest is lost, eventually causing water eutrophication. Recent advances in the understanding of mechanisms by which wild and cultivated species adapt to low-phosphate stress and the implementation of alternative bacterial pathways for phosphorus metabolism have started to allow the design of more effective breeding and genetic engineering strategies to produce highly phosphate-efficient crops, optimize fertilizer use, and reach agricultural sustainabil...
796 citations
Book•
1 Dec 1980
TL;DR: In this article, the biochemical, nutritional, physiological and pharmacological effects of the essential nutrient, Vitamin E, are presented in a comprehensive reference, including the history, nutrient functions, food sources, and metabolic and clinical roles of Vitamin E and its tocopherol and tocotrienol derivatives.
Abstract: Information on the biochemical, nutritional, physiological and pharmacological effects of the essential nutrient, Vitamin E, are presented in this comprehensive reference. The history, nutrient functions, food sources, and metabolic and clinical roles of Vitamin E and its tocopherol and tocotrienol derivatives are described. Assay methods for identifying tocopherols in foods and body tissues are reviewed. Other chapters discuss the absorption, transport, metabolism, biosynthesis and nutrient interrelationships of tocopherols. Vitamin E plays an important biochemical role as an antioxidant, in cell membranes, and in nucleic acid, protein and mitochondrial metabolism. It also acts in the immune response, protects against environmental toxicants and affects the storage and flavor properties of foods. Human requirements for Vitamin E and the pathology of Vitamin E deficiency are also examined
727 citations
TL;DR: Better understanding of nutrient interactions may be useful in understanding importance of balanced supply of nutrients and consequently improvement in plant growth or yields.
Abstract: Balanced supply of of essential nutrients is one of the most important factors in increasing crop yields. The objective of this review is to discuss interactions among major and minor nutrients in crop plants. In crop plants, the nutrient interactions are generaly measured in terms of growth response and change in concentration of nutrients. Upon addition of two nutrients, a increase in crop yield that is more than adding only one, the interaction is positive (synergistic). Similarly, if adding the two nutrients together produced less yield as compared to individual ones, the interactions is negative (antagonistic).When there is no change, there is no interaction. All the three interactions among essential plant nutrients have been reported. However, most interactions are complex. A nutrient interacting simultaneously with more than one nutrients. This may induced deficiencies, toxicities, modified growth responses, and/or modified nutrient composition. Better understanding of nutrient interactions may be...
702 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 4 |
| 2024 | 10 |
| 2023 | 39 |
| 2022 | 42 |
| 2021 | 31 |
| 2020 | 32 |