Manganese in Plants: From Acquisition to Subcellular Allocation

Manganese (Mn) is an important micronutrient for plant growth and development and sustains metabolic roles within different plant cell compartments. The metal is an essential cofactor for the oxygen-evolving complex (OEC) of the photosynthetic machinery, catalyzing the water-splitting reaction in ph...

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Vydáno v:Frontiers in plant science Ročník 11; s. 300
Hlavní autoři: Alejandro, Santiago, Höller, Stefanie, Meier, Bastian, Peiter, Edgar
Médium: Journal Article
Jazyk:angličtina
Vydáno: Switzerland Frontiers Media SA 26.03.2020
Frontiers Media S.A
Témata:
Acidic soils
Aeration
Arabidopsis
Bioavailability
Calcareous soils
Flowers & plants
Gene families
Glycosylation
Homeostasis
intracellular distribution
Leaves
Manganese
manganese deficiency
manganese toxicity
manganese transport
manganese uptake
Organic matter
Photosynthesis
Photosystem II
Plant growth
Plant Science
Plasma
Protein transport
Regulatory mechanisms (biology)
Scavenging
Seeds
Toxicity
Water splitting
manganese uptake
Arabidopsis
intracellular distribution
barley
manganese transport
rice
manganese deficiency
manganese toxicity
ISSN:1664-462X, 1664-462X
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Shrnutí:Manganese (Mn) is an important micronutrient for plant growth and development and sustains metabolic roles within different plant cell compartments. The metal is an essential cofactor for the oxygen-evolving complex (OEC) of the photosynthetic machinery, catalyzing the water-splitting reaction in photosystem II (PSII). Despite the importance of Mn for photosynthesis and other processes, the physiological relevance of Mn uptake and compartmentation in plants has been underrated. The subcellular Mn homeostasis to maintain compartmented Mn-dependent metabolic processes like glycosylation, ROS scavenging, and photosynthesis is mediated by a multitude of transport proteins from diverse gene families. However, Mn homeostasis may be disturbed under suboptimal or excessive Mn availability. Mn deficiency is a serious, widespread plant nutritional disorder in dry, well-aerated and calcareous soils, as well as in soils containing high amounts of organic matter, where bio-availability of Mn can decrease far below the level that is required for normal plant growth. By contrast, Mn toxicity occurs on poorly drained and acidic soils in which high amounts of Mn are rendered available. Consequently, plants have evolved mechanisms to tightly regulate Mn uptake, trafficking, and storage. This review provides a comprehensive overview, with a focus on recent advances, on the multiple functions of transporters involved in Mn homeostasis, as well as their regulatory mechanisms in the plant's response to different conditions of Mn availability.
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This article was submitted to Plant Nutrition, a section of the journal Frontiers in Plant Science
Edited by: Manuel Nieves-Cordones, Center for Edaphology and Applied Biology of Segura, Spanish National Research Council, Spain
Reviewed by: Sebastien Thomine, UMR 9198 Institut de Biologie Intégrative de la Cellule (I2BC), France; Mathieu Pottier, University of Liège, Belgium
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2020.00300