Search results: Found 3

Listing 1 - 3 of 3
Sort by
From soil to seed: micronutrient movement into and within the plant

Authors: --- --- --- --- et al.
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889193516 Year: Pages: 193 DOI: 10.3389/978-2-88919-351-6 Language: English
Publisher: Frontiers Media SA
Subject: Nutrition and Food Sciences --- Medicine (General) --- Botany --- Science (General)
Added to DOAB on : 2016-03-10 08:14:32
License:

Loading...
Export citation

Choose an application

Abstract

In all living organisms, essential micronutrients are cofactors of many ubiquitous proteins that participate in crucial metabolic pathways, but can also be toxic when present in excessive concentrations. In order to achieve correct homeostasis, plants need to control uptake of metals from the environment, their distribution to organs and tissues, and their subcellular compartmentalization. They also have to avoid deleterious accumulation of metals and metalloids such as Cd, As and Al. These multiple steps are controlled by their transport across various membrane structures and their storage in different organelles. Thus, integration of these transport systems required for micronutrient trafficking within the plant is necessary for physiological processes to work efficiently. To cope with the variable availability of micronutrients, plants have evolved an intricate collection of physiological and developmental processes, which are under tight control of short- and long-range signaling pathways. Understanding how plants perceive and deal with different micronutrient concentrations, from regulation to active transport, is important to completing the puzzle of plant metal homeostasis. This is an essential area of research, with several implications for plant biology, agriculture and human nutrition. There is a rising interest in developing plants that efficiently mobilize specific metals and prosper in soils with limited micronutrient availability, as well as those that can selectively accumulate beneficial micronutrients in the edible parts while avoiding contaminants such as Cd and As. However, there is still an important gap in our understanding of how nutrients reach the seeds and the relative contribution of each step in the long pathway from the rhizosphere to the seed. Possible rate-limiting steps for micronutrient accumulation in grains should be the primary targets of biotechnological interventions aiming at biofortification. Over the last 10 years, many micronutrient uptake- and transport-related processes have been identified at the molecular and physiological level. The systematic search for mutants and transcriptional responses has allowed analysis of micronutrient-signaling pathways at the cellular level, whereas physiological approaches have been particularly useful in describing micronutrient-signaling processes at the organ and whole-plant level. Large-scale elemental profiling using high-throughput analytical methodologies and their integration with both bioinformatics and genetic tools, along with metal speciation, have been used to decipher the functions of genes that control micronutrients homeostasis. In this research topic, we will follow the pathway of metal movement from the soil to the seed and describe the suggested roles of identified gene products in an effort to understand how plants acquire micronutrients from the soil, how they partition among different tissues and subcellular organelles, and how they regulate their deficiency and overload responses. We also highlight the current work on heavy metals and metalloids uptake and accumulation, the studies on metal selectivity in transporters and the cross-talk between micro and macronutrients. Thus, we believe a continued dialogue and sharing of ideas amongst plant scientists is critical to a better understanding of metal movement into and within the plant.

Dietary Trace Minerals

Author:
ISBN: 9783039283248 / 9783039283255 Year: Pages: 208 DOI: 10.3390/books978-3-03928-325-5 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Nutrition and Food Sciences
Added to DOAB on : 2020-04-07 23:07:08
License:

Loading...
Export citation

Choose an application

Abstract

Dietary trace minerals are pivotal and hold a key role in numerous metabolic processes. Trace mineral deficiencies (except for iodine, iron, and zinc) do not often develop spontaneously in adults on ordinary diets; infants are more vulnerable because their growth is rapid and their intake varies. Trace mineral imbalances can result from hereditary disorders (e.g., hemochromatosis, Wilson disease), kidney dialysis, parenteral nutrition, restrictive diets prescribed for people with inborn errors of metabolism, or various popular diet plans. The Special Issue “Dietary Trace Minerals” comprised 13 peer-reviewed papers on the most recent evidence regarding the dietary intake of trace minerals, as well as their effect on the prevention and treatment of non-communicable diseases. Original contributions and literature reviews further demonstrated the crucial and central part that dietary trace minerals play in human health and development. This editorial provides a brief and concise overview of the content of the Dietary Trace Minerals Special Issue.

Molecular Advances in Wheat and Barley

Author:
ISBN: 9783039213719 / 9783039213726 Year: Pages: 290 DOI: 10.3390/books978-3-03921-372-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-12-09 11:49:15
License:

Loading...
Export citation

Choose an application

Abstract

Allohexaploid bread wheat and diploid barley are two of the most cultivated crops in the world. This book reports novel research and reviews concerning the use of modern technologies to understand the molecular bases for wheat and barley improvement. The contributions published in this book illustrate research advances in wheat and barley knowledge using modern molecular techniques. These molecular approaches cover genomic, transcriptomic, proteomic, and phenomic levels, together with new tools for gene identification and the development of novel molecular markers. Overall, the contributions for this book lead to a further understanding of regulatory systems in order to improve wheat and barley performance.

Keywords

Triticum durum --- Aegilops tauschii --- Triticum aestivum --- marker-trait associations --- genes --- bread wheat --- genetic biofortification --- favorable alleles --- allohexaploid --- homoeolog --- hybrid necrosis --- molecular marker --- wheat --- wheat --- rye --- 6R --- small segment translocation --- powdery mildew --- transgenic wheat --- 12-oxophytodienoate reductase --- jasmonates --- freezing tolerance --- HIGS --- transgene --- wheat --- barley --- cereal cyst nematodes --- wheat --- barely --- breeding --- biotechnology --- resistance --- Triticum aestivum --- Landrace --- Powdery mildew --- Bulked segregant analysis-RNA-Seq (BSR-Seq) --- Single nucleotide polymorphism (SNP) --- Kompetitive Allele Specific PCR (KASP) --- Blumeria graminis f. sp. tritici --- protein two-dimensional electrophoresis --- mass spectrometry --- Pm40 --- Barley --- Grain development --- Transcriptional dynamics --- RNA editing --- RNA-seq --- durum wheat --- Tunisian landraces --- center of diversity --- genetic diversity --- population structure --- DArTseq technology --- chromatin --- 3D-FISH --- nucleus --- introgression --- rye --- hybrid --- wheat --- genome stability --- wheat --- Thinopyrum --- chromosome --- ND-FISH --- oligo probe --- barley --- wheat --- protease --- germination --- grain --- abiotic stress --- antioxidant enzymes --- aquaporin --- TdPIP2 --- 1 --- histochemical analysis --- transgenic wheat --- transpiration --- wheat --- Aegilops tauschii --- Lr42 --- disease resistance --- molecular mapping --- KASP markers --- marker-assisted selection --- phytase --- wheat --- barley --- purple acid phosphatase phytase --- PAPhy --- mature grain phytase activity (MGPA) --- genome assembly --- bread wheat --- barley --- optical mapping --- BAC --- ribosomal DNA --- cereals --- CRISPR --- crops --- genetic engineering --- genome editing --- plant --- Triticeae --- n/a

Listing 1 - 3 of 3
Sort by
Narrow your search
-->