title: Manganese Deficiency in Plants: The Impact on Photosystem II.
abstract: Manganese (Mn) is an essential plant micronutrient with an indispensable function as a catalyst in the oxygen-evolving complex (OEC) of photosystem II (PSII). Even so, Mn deficiency frequently occurs without visual leaf symptoms, thereby masking the distribution and dimension of the problem restricting crop productivity in many places of the world. Hence, timely alleviation of latent Mn deficiency is a challenge in promoting plant growth and quality. We describe here the key mechanisms of Mn deficiency in plants by focusing on the impact of Mn on PSII stability and functionality. We also address the mechanisms underlying the differential tolerance towards Mn deficiency observed among plant genotypes, which enable Mn-efficient plants to grow on marginal land with poor Mn availability.
authors.affiliation: Plant and Soil Science Section, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark.
authors.forename: Sidsel Birkelund
authors.initials: SB
authors.lastname: Schmidt
authors.affiliation: Molecular Plant Biology Section, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark.
authors.forename: Poul Erik
authors.initials: PE
authors.lastname: Jensen
authors.affiliation: Plant and Soil Science Section, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark. Electronic address: shu@plen.ku.dk.
authors.forename: Søren
authors.initials: S
authors.lastname: Husted
mesh_terms: D002734:Chlorophyll / Q000378:metabolism; D008345:Manganese / Q000172:deficiency / Q000378:metabolism*; D045332:Photosystem II Protein Complex / Q000235:genetics / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D010944:Plants / Q000378:metabolism*
chemical_list: D045332:Photosystem II Protein Complex; D010940:Plant Proteins; D002734:Chlorophyll; D008345:Manganese
keywords: chlorophyll a fluorescence; deficiency; extrinsic proteins; manganese; photosystem II