scholarly journals Correcting Micronutrient Deficiency Using Metal Hyperaccumulators: Alyssum Biomass as a Natural Product for Nickel Deficiency Correction

HortScience ◽  
2006 ◽  
Vol 41 (5) ◽  
pp. 1231-1234 ◽  
Author(s):  
Bruce W. Wood ◽  
Rufus Chaney ◽  
Mark Crawford
Keyword(s):  
Carya Illinoinensis ◽  
Micronutrient Deficiencies ◽  
Spray Application ◽  
Sulfate Salt ◽  
Alyssum Murale ◽  
Horticultural Crops ◽  
Deficiency Symptoms ◽  
Nutritional Needs ◽  
Biomass Extract ◽  
Nickel Deficiency

The existence of nickel (Ni) deficiency in certain horticultural crops merits development of fertilizer products suitable for specific niche uses and for correcting or preventing deficiency problems before marketability and yields are affected. The efficacy of satisfying plant nutritional needs for Ni using biomass of Ni hyperaccumulator species was assessed. Aqueous extraction of Alyssum murale (Waldst. & Kit.) biomass yielded a Ni-enriched extract that, upon spray application, corrects and prevents Ni deficiency in pecan [Carya illinoinensis (Wangenh.) K. Koch]. The Ni-Alyssum biomass extract was as effective at correcting or preventing Ni deficiency as was a commercial Ni-sulfate salt. Foliar treatment of pecan with either source at ≥10 mg·L–1 Ni, regardless of source, prevented deficiency symptoms whereas treatment at less than 10 mg·L–1 Ni was only partially effective. Autumn application of Ni to foliage at 100 mg·L–1 Ni during leaf senescence resulted in enough remobilized Ni to prevent expression of morphologically based Ni deficiency symptoms the following spring. The study demonstrates that micronutrient deficiencies are potentially correctable using extracts of metal-accumulating plants.

The Role of Animal-Source Foods in Sustainable, Ethical, and Optimal Human Diets

2020 ◽  
pp. 344-364
Author(s):  
Julia de Bruyn ◽  
Brigitte Bagnol ◽  
Hilary H. Chan ◽  
Delia Grace ◽  
Marisa E. V. Mitchell ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Natural Resources ◽  
Food Systems ◽  
Human Growth ◽  
Micronutrient Deficiencies ◽  
Healthy Human ◽  
The Sustainable Development ◽  
Animal Source Foods ◽  
Animal Source ◽  
Nutritional Needs

Achieving sustainable, ethical food systems in support of human and planetary health is among the greatest challenges facing the global community. Globally, 815 million people are chronically undernourished, 108 million children and 604 million adults are obese, and more than two billion people are at risk of micronutrient deficiencies. Animal-source foods (ASFs), including milk, meat, fish, and eggs, provide high-quality protein and a variety of micronutrients in forms readily absorbed and used by the human body. Current research continues to explore the nutritional contributions of ASFs, their interactions with other dietary components, and their role in healthy human growth and development. This chapter uses the framework of the sustainable development goals (SDGs) to consider the value of ASFs in human diets across a range of settings. It discusses opportunities for multidisciplinary efforts that harness science, technology, and innovation (STI) to mitigate risks of foodborne disease, to promote the efficient management of natural resources, to reduce nutrient losses within livestock value chains, and to support gender- and culturally sensitive communication around livestock management and human nutrition. In support of the economic, social, and environmental dimensions of sustainable development, this chapter proposes opportunities to meet the nutritional needs of current and future populations while supporting biodiversity and conserving scarce natural resources.

scholarly journals Threshold Leaf Levels of Zinc that Influence Nut Yield and Vegetative Growth in Pecan

HortScience ◽  
1993 ◽  
Vol 28 (11) ◽  
pp. 1100-1102 ◽  
Author(s):  
Darrell Sparks
Keyword(s):  
Mathematical Modeling ◽  
Vegetative Growth ◽  
Threshold Value ◽  
Carya Illinoinensis ◽  
Performance Indices ◽  
Concentration Data ◽  
Deficiency Symptoms ◽  
Zn Concentration ◽  
Plant Growth Model ◽  
Tree Performance

The modified Mitscherlich plant growth model was used to quantify the threshold leaf Zn level influencing nut yield and vegetative growth, on an orchard basis, for pecan [Carya illinoinensis (Wangenh.) C. Koch]. Four indices of tree performance, including percentage of trees without deficiency symptoms, vegetative growth, nut yield, and trees without deficiency symptoms plus nut yield, were analyzed with regard to leaf Zn concentration. Data available from published and unpublished sources on any single performance index were combined for mathematical modeling. The threshold value for leaf Zn was determined to be ≈50 μg·g-1 for these tree performance indices. Thus, nut yield and vegetative growth in an orchard will be reduced with a leaf Zn concentration below ≈50 μg·g-1, but will not be affected above this value.

scholarly journals Nickel Deficiency Affects Nitrogenous Forms and Urease Activity in Spring Xylem Sap of Pecan

2007 ◽  
Vol 132 (3) ◽  
pp. 302-309 ◽  
Author(s):  
Cheng Bai ◽  
Charles C. Reilly ◽  
Bruce W. Wood
Keyword(s):  
High Performance ◽  
Urea Cycle ◽  
Specific Activity ◽  
Xylem Sap ◽  
Early Spring ◽  
Carya Illinoinensis ◽  
Catabolic Pathway ◽  
Primary Amide ◽  
Physiological Processes ◽  
Nickel Deficiency

While nickel (Ni) deficiency occurs in certain agricultural crops, little is known regarding the influence of deficiency on metabolic or physiological processes. We studied the influence of Ni deficiency on the reduced-nitrogen (N) composition of early spring xylem sap of pecan [Carya illinoinensis (Wangenh.) C. Koch]. High-performance liquid chromatography (HPLC) analysis of sap composition found the presence of ureido-, amide-, and amino-N substances and that they are quantitatively influenced by tree Ni nutritional status. Ureido-N forms quantitatively dominated amide-N forms with respect to both molar concentration and the forms in which reduced N atoms are present; thus, pecan appears to be predominately a ureide-transporting species. The primary ureido-N substances in sap of Ni-sufficient trees are citrulline ≈ asparagine ≈ xanthine > ureidoglycolate > allantoic acid > allantoin ≈ uric acid ≈ urea. Asparagine is the primary amide-N form, while only traces of amino-N forms (e.g., tryptamine and β-phenylethylamine) are found in xylem sap. Nickel deficiency substantially increased citrulline and allantoic acid in xylem sap while decreasing the asparagine, xanthine, and β-phenylethylamine concentrations. These Ni-linked quantitative shifts in reduced-N forms indicate that Ni nutrition potentially affects intermediates of both the ureide catabolic pathway and the urea cycle as well as the nitrogen/carbon (N/C) economy of the tree. Xylem sap-associated urease-specific activity was also reduced as a consequence of Ni deficiency. These results indicate that Ni deficiency potentially disrupts normal N-cycling via disruption of ureide metabolism.

scholarly journals Health Promotion with Counseling on Fulfilling Balanced Nutritional Needs for Community Groups in Pandemic Covid 19 Outbreak

2022 ◽  
Vol 4 (2) ◽  
pp. 853-860
Author(s):  
Nurhidayat Nurhidayat ◽  
Suhanda Suhanda ◽  
Doni Setiawan ◽  
Heri Ariyanto ◽  
Henri Setiawan
Keyword(s):  
Fruits And Vegetables ◽  
Antioxidant Compounds ◽  
Micronutrient Deficiencies ◽  
Community Groups ◽  
Job Description ◽  
Planning Stage ◽  
Five Dimensions ◽  
Service Activity ◽  
Nutritional Needs ◽  
Evaluation Sheet

Covid-19 pandemic could increase forms of malnutrition such as overweight and micronutrient deficiencies. Fruits and vegetables are the best sources of vitamins and minerals. The content of vitamins and minerals can act as antioxidant compounds. The method used in this service activity consists of the planning stage, the implementation of the activity, and ends with an evaluation as a measure of the level of success. Health education is carried out by means of lectures and question and answer sessions, educational media using leaflets and PowerPoint Presentations. Results: the evaluation shows that the activities have been carried out well in accordance with the results indicators and criteria on the Evaluation Sheet instrument. The sheet is based on five dimensions, namely Punctuality and Duration, Participation, Knowledge, Job Description and Problem Solving. The content of the evaluation is carried out by two independent observers.

scholarly journals Micronutrient supplementation in pregnancy: Who, what and how much?

2018 ◽  
Vol 12 (1) ◽  
pp. 5-13 ◽  
Author(s):  
F Parisi ◽  
I di Bartolo ◽  
VM Savasi ◽  
I Cetin
Keyword(s):  
Low Income ◽  
Maternal Nutrition ◽  
Nutritional Assessment ◽  
Obstetric Care ◽  
Cost Effective ◽  
Low Income Countries ◽  
Micronutrient Deficiencies ◽  
Nutrient Deficiencies ◽  
Nutritional Needs ◽  
In Pregnancy

Pregnancy represents a period of major physiological and metabolic change, aiming to ensure proper fetal growth and development, as well as maternal preservation. This review focuses on maternal nutrition, and particularly on micronutrient deficiencies and supplementation during pregnancy. Nutrient deficiencies and consequences in pregnant women are presented, with an overview of current recommendations for dietary supplementation in pregnancy, even considering the risk of micronutrient overload. Appropriate universal supplementation and prophylaxis/treatment of nutritional needs currently appear to be the most cost-effective goal in low-income countries, thus ensuring adequate intake of key elements including folate, iron, calcium, vitamin D and A. In high-income countries, a proper nutritional assessment and counselling should be mandatory in obstetric care in order to normalize pregestational body mass index, choose a healthy dietary pattern and evaluate the risk of deficiencies.

scholarly journals Micronutrient deficiencies in the elderly – could ready meals be part of the solution?

2017 ◽  
Vol 6 ◽  
Author(s):  
Richard Hoffman
Keyword(s):  
Nutritional Quality ◽  
Nutritional Value ◽  
The Elderly ◽  
Significant Part ◽  
Micronutrient Deficiencies ◽  
Age Related ◽  
Nutritional Needs ◽  
New Policies ◽  
Poor Nutrition

AbstractMicronutrient deficiencies contribute to many age-related disorders. One group at particular risk of micronutrient deficiencies is the elderly. Many elderly, such as the frail and those living in institutions, rely on ready meals of variable, often poor, nutritional quality for a significant part of their daily nutritional needs. New policies are needed to ensure that micronutrients (vitamins and minerals) and phytochemicals of known nutritional value are retained during the manufacture of ready meals. This together with increased awareness of the importance of micronutrients for health, and simple, clear labelling of the micronutrient content of ready meals would help in the choice of healthier products. Professionally prepared ready meals monitored by nutritionists and dietitians can help achieve these goals so that ready meals become part of the solution to poor nutrition in the elderly, rather than being viewed as part of the problem.

scholarly journals Association of Meloidogyne partityla with Nickel Deficiency and Mouse-ear of Pecan

HortScience ◽  
2006 ◽  
Vol 41 (2) ◽  
pp. 402-404 ◽  
Author(s):  
A.P. Nyczepir ◽  
B.W. Wood ◽  
C.C. Reilly
Keyword(s):  
Dry Weight ◽  
Carya Illinoinensis ◽  
Contributing Factors ◽  
Mouse Ear ◽  
Nematode Parasitism ◽  
Ear Symptoms ◽  
Nickel Deficiency

Pecan [Carya illinoinensis (Wangenh.) K. Koch] trees exhibit nickel (Ni) deficiency in certain orchard situations. The symptoms are manifest as either mouse-ear or replant disorder and in certain situations are associated with nematode parasitism. A field microplot study of pecan seedlings treated with either Meloidogyne partityla or Criconemoides xenoplax or both found that parasitism by M. partityla can result in enhancement in the severity of mouse-ear symptoms and a reduction in foliar Ni concentration. The Ni threshold for triggering morphological symptoms in young developing foliage was between 0.265 and 0.862 μg·g–1 dry weight, while the threshold for rosetting was between 0.007 and 0.064 μg·g–1 dw. Results indicate that parasitism by M. partityla is a contributing factor to the induction of Ni deficiency in pecan and raises the possibility that nematode parasitism and Ni nutrition can be contributing factors to many plant maladies.

Emerging Nutrition Gaps in a World of Affluence - Micronutrient Intake and Status Globally

2011 ◽  
Vol 81 (4) ◽  
pp. 238-239 ◽  
Author(s):  
Manfred Eggersdorfer ◽  
Paul Walter
Keyword(s):  
Developing Countries ◽  
Human Health ◽  
Old Age ◽  
Molecular Basis ◽  
Health Benefit ◽  
Developed Countries ◽  
Micronutrient Deficiencies ◽  
New Science ◽  
Health And Nutrition ◽  
Micronutrient Intake

Nutrition is important for human health in all stages of life - from conception to old age. Today we know much more about the molecular basis of nutrition. Most importantly, we have learnt that micronutrients, among other factors, interact with genes, and new science is increasingly providing more tools to clarify this interrelation between health and nutrition. Sufficient intake of vitamins is essential to achieve maximum health benefit. It is well established that in developing countries, millions of people still suffer from micronutrient deficiencies. However, it is far less recognized that we face micronutrient insufficiencies also in developed countries.

Sign in / Sign up

Export Citation Format

Share Document