Are calcium oxalate crystals a dynamic calcium store in plants?

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dc.creatorElder Antônio Sousa e Paiva
dc.date.accessioned2021-08-02T22:51:15Z
dc.date.accessioned2025-09-08T23:51:34Z
dc.date.available2021-08-02T22:51:15Z
dc.date.issued2019
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1111/nph.15912
dc.identifier.issn14698137
dc.identifier.urihttps://hdl.handle.net/1843/37197
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofNew phytologist
dc.rightsAcesso Aberto
dc.subjectOxalato de cálcio
dc.subjectFloema
dc.subjectMagnoliopsida
dc.subject.otherCalcium oxalate
dc.subject.otherCalcium reserve
dc.subject.otherExcretion in plants
dc.subject.otherCalcium transport
dc.subject.otherPhloem
dc.subject.otherPlant crystals
dc.titleAre calcium oxalate crystals a dynamic calcium store in plants?
dc.typeArtigo de periódico
local.citation.epage1711
local.citation.issue4
local.citation.spage1707
local.citation.volume223
local.description.resumoCalcium oxalate (CaOx) crystals occur as intravacuolar deposits in most angiosperm species. Different functions have been attributed to these crystals, some of which are very speculative, until now. Calcium regulation and homeostasis seem to be the most widespread function of CaOx crystals. Being rich in calcium, these crystals constitute a reserve of calcium for plants. However, despite being bioavailable, this reserve is functional in just a few situations due to the low mobility of calcium for phloem translocation. Therefore,CaOxcrystals as a calcium reserve is a paradox because in most cases the reserve cannot be used. However, in most plants, these crystals occur in organs or tissues that will be discarded, which allows the elimination of excess calcium. This suggests that CaOx crystals have a functional role in excess calcium excretion. There is some evidence that, for calcium, this excretory function is relevant for plants since they lack an excretory system dedicated to discarding solid wastes, such as calcium salts.
local.identifier.orcidhttps://orcid.org/0000-0002-1440-4810
local.publisher.countryBrasil
local.publisher.departmentICB - DEPARTAMENTO DE BOTÂNICA
local.publisher.initialsUFMG

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