Manganese in Plants: From Acquisition to Subcellular Allocation

Frontiers in Plant Science, Journal Year: 2020, Volume and Issue: 11

Published: March 26, 2020

Manganese (Mn) is an important micronutrient for plant growth and development sustains metabolic roles within different cell compartments. The metal essential cofactor the oxygen-evolving complex of photosynthetic machinery, catalyzing water-splitting reaction in photosystem II (PSII). Despite importance Mn photosynthesis other processes, physiological relevance uptake compartmentation plants has been underrated. subcellular homeostasis to maintain compartmented Mn-dependent processes like glycosylation, ROS scavenging, mediated by a multitude transport proteins from diverse gene families. However, may be disturbed under suboptimal or excessive availability. deficiency serious, widespread nutritional disorder dry, well-aerated calcareous soils, as well soils containing high amounts organic matter, where bio-availability can decrease far below level that required normal growth. By contrast, toxicity occurs on poorly drained acidic which are rendered available. Consequently, have evolved mechanisms tightly regulate uptake, trafficking, storage. This review provides comprehensive overview, with focus recent advances, multiple functions transporters involved homeostasis, their regulatory plant's response conditions

Language: Английский

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Trace metal metabolism in plants

Journal of Experimental Botany, Journal Year: 2017, Volume and Issue: 69(5), P. 909 - 954

Published: Dec. 13, 2017

Many trace metals are essential micronutrients, but also potent toxins. Due to natural and anthropogenic causes, vastly different metal concentrations occur in various habitats, ranging from deficient toxic levels. Therefore, one focus of plant research is on the response terms uptake, transport, sequestration, speciation, physiological use, deficiency, toxicity, detoxification. In this review, we cover most these aspects for micronutrients copper, iron, manganese, molybdenum, nickel, zinc provide a broader overview than found other recent reviews, cross-link knowledge very active field that often seen separated way. For example, individual processes usage, or toxicity were not mechanistically interconnected. review aims stimulate communication researchers following approaches, such as gene expression analysis, biochemistry, biophysics metalloproteins. Furthermore, highlight insights, emphasizing data obtained under physiologically environmentally relevant conditions.

Language: Английский

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Manganese Deficiency in Plants: The Impact on Photosystem II

Trends in Plant Science, Journal Year: 2016, Volume and Issue: 21(7), P. 622 - 632

Published: April 15, 2016

Language: Английский

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Iron homeostasis in plants and its crosstalk with copper, zinc, and manganese

Plant Stress, Journal Year: 2021, Volume and Issue: 1, P. 100008 - 100008

Published: Jan. 1, 2021

Micronutrients like copper (Cu), manganese (Mn), Iron (Fe), and Zinc (Zn) are essential for plants, their functions tightly linked vital metabolism. The normal concentration range each of these metals in the plant is narrow, with both deficiencies excesses causing severe physiological implications. Maintaining an optimum level redox-active requires balanced activities transporters that mediate import into cell, proper distribution to where it needed storage, use metalloproteins metalloenzymes within cell. Understanding complexities interaction between Fe other micronutrients how defines health plants would facilitate improved growth strategies on soils low/high levels metals, implications agriculture phytoremediation. review briefly discusses role expands iron homeostasis its crosstalk Cu, Zn, Mn.

Language: Английский

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Zinc Hyperaccumulation in Plants: A Review

Plants, Journal Year: 2020, Volume and Issue: 9(5), P. 562 - 562

Published: April 29, 2020

Zinc is an essential microelement involved in many aspects of plant growth and development. Abnormal zinc amounts, mostly due to human activities, can be toxic flora, fauna, humans. In plants, excess causes morphological, biochemical, physiological disorders. Some plants have the ability resist even accumulate their tissues. To date, 28 species been described as hyperaccumulators. These display several physiological, biochemical adaptations resulting from activation molecular Zn hyperaccumulation mechanisms. varied between within populations. this review, we describe well mechanisms plants.

Language: Английский

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Manganese phytotoxicity: new light on an old problem

Annals of Botany, Journal Year: 2015, Volume and Issue: 116(3), P. 313 - 319

Published: Aug. 26, 2015

Background Manganese (Mn) is an essential micronutrient that phytotoxic under certain edaphic and climatic conditions. Multiple factors regulate Mn redox status therefore its phytoavailability, multiple environmental including light intensity temperature interact with phytotoxicity. The complexity of these interactions coupled substantial genetic variation in tolerance have hampered the recognition toxcity as important stress many natural agricultural systems. Scope Conflicting theories been advanced regarding mechanism phytotoxicity tolerance. One line evidence suggests toxicity ocurs leaf apoplast, while another occurs by disruption photosynthetic electron flow chloroplasts. These conflicting results may at least part be attributed to regimes employed, studies conducted intensities approximating sunlight showing photo-oxidative a toxicity. Excessive competes transport metabolism other cationic metals, causing range induced nutrient deficiencies. Compartmentation, exclusion detoxification mechanisms all involved excess Mn. strong effects light, temperature, precipitation climate variables on phytoavailability suggest global change likely exacerbate future, which has largely escaped scientific attention. Conclusions Given terrestrially ubiquitous, it imperative heightened risk both managed plant ecosystems factored into evaluation potential impacts vegetation. Large inter- intraspecific increased drive changes community composition, but agroecosystems crops developed greater topics deserve research

Language: Английский

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The Biochemical Properties of Manganese in Plants

Plants, Journal Year: 2019, Volume and Issue: 8(10), P. 381 - 381

Published: Sept. 27, 2019

Manganese (Mn) is an essential micronutrient with many functional roles in plant metabolism. acts as activator and co-factor of hundreds metalloenzymes plants. Because its ability to readily change oxidation state biological systems, Mn plays important role a broad range enzyme-catalyzed reactions, including redox phosphorylation, decarboxylation, hydrolysis. Manganese(II) the prevalent plants exhibits fast ligand exchange kinetics, which means that can often be substituted by other metal ions, such Mg(II), has similar ion characteristics requirements environment binding sites. Knowledge molecular mechanisms catalyzed regulation insertion into active site Mn-dependent enzymes, presence metals, gradually evolving. This review presents overview chemistry biochemistry plants, updated list known together enzymes where been shown ions. Furthermore, current knowledge structure three most well characterized Mn-containing plants; oxygen evolving complex photosystem II, superoxide dismutase, oxalate oxidase summarized.

Language: Английский

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Advances in the Mechanisms of Plant Tolerance to Manganese Toxicity

International Journal of Molecular Sciences, Journal Year: 2019, Volume and Issue: 20(20), P. 5096 - 5096

Published: Oct. 14, 2019

Manganese (Mn) is an essential element for plant growth due to its participation in a series of physiological and metabolic processes. Mn also considered heavy metal that causes phytotoxicity when present excess, disrupting photosynthesis enzyme activity plants. Thus, toxicity major constraint limiting production, especially acid soils. To cope with toxicity, plants have evolved wide range adaptive strategies improve their under this stress. tolerance mechanisms include activation the antioxidant system, regulation uptake homeostasis, compartmentalization into subcellular compartments (e.g., vacuoles, endoplasmic reticulum, Golgi apparatus, cell walls). In regard, numerous genes are involved specific pathways controlling detoxification. Here, we summarize recent advances highlight roles responsible uptake, translocation, distribution, contributing We hope review will provide comprehensive understanding through gene regulation, which aid breeding crop varieties via genetic improvement approaches, enhancing yield quality crops.

Language: Английский

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Essential and Beneficial Trace Elements in Plants, and Their Transport in Roots: a Review

Applied Biochemistry and Biotechnology, Journal Year: 2016, Volume and Issue: 181(1), P. 464 - 482

Published: Sept. 29, 2016

Language: Английский

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Molecular mechanisms underlying heavy metal uptake, translocation and tolerance in hyperaccumulators-an analysis

Environmental Challenges, Journal Year: 2021, Volume and Issue: 4, P. 100197 - 100197

Published: July 3, 2021

Phytoremediation is an economically viable green technology that utilizes hyperaccumulator plants to remove heavy metals (HM) from the soil. Hyperaccumulators are adept at sequestering high concentrations of HM in aerial parts and intracellular detoxification through cell wall binding, organic acids, chelation sequestration. Excess activate oxidative stress defense mechanisms initiate synthesis stress-related proteins plants. Plethora studies have assessed feasibility phytoextraction demonstrated biomass metal hyperaccumulation two basic requirements for making process efficient. However, biochemical pathways involved uptake, translocation sequestration these not fully understood. Thus, more fundamental understanding traits needed optimize phytoextraction. In this review, we aim focus on transport, accumulation common such as mercury (Hg), lead (Pb), cadmium (Cd), chromium (Cr), zinc (Zn), copper (Cu) Arsenic (As) We will also discuss prominent metallophytes their phytoremediation strategies. This study be helpful uptake by hyperaccumulators. It would assist gaining knowledge about adaptation strategy used achieve homeostasis.

Language: Английский

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