Structural and physiological responses to water availability provide insights into the maintenance of Mauritia flexuosa (Arecaceae) seedling banks

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dc.creatorTarcísiada Silva Almeida
dc.creatorLeonardo Monteiro Ribeiro
dc.creatorCristina de Paula Santos Martins
dc.creatorThays Lima Barbosa
dc.creatorMaria Olívia Mercadante-simões
dc.creatorEdson de Oliveira Vieira
dc.creatorYule Roberta Ferreira Nunes
dc.creatorPaulo Sergio Nascimento Lopes
dc.date.accessioned2025-07-17T15:40:30Z
dc.date.accessioned2025-09-08T23:27:31Z
dc.date.available2025-07-17T15:40:30Z
dc.date.issued2024
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.identifier.doihttps://doi.org/10.1016/j.foreco.2024.121881
dc.identifier.issn0378-1127
dc.identifier.urihttps://hdl.handle.net/1843/83613
dc.languagepor
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofForest Ecology and Management
dc.rightsAcesso Restrito
dc.subjectAcido abscisico
dc.subjectProteinas
dc.subjectFotossíntese
dc.subjectCerrados
dc.subject.otherAcido abscisico
dc.subject.otherProteinas
dc.subject.otherFotossíntese
dc.subject.otherCerrados
dc.titleStructural and physiological responses to water availability provide insights into the maintenance of Mauritia flexuosa (Arecaceae) seedling banks
dc.typeArtigo de periódico
local.citation.epage12
local.citation.spage1
local.citation.volume561
local.description.resumoMauritia flexuosa is an ecologically and economically important Amazonian palm. It has an expanded distribution to flooded ecosystems (“veredas”) in the markedly seasonal Cerrado biome. The species’ seeds are sensitive to desiccation, which limits the formation of soil seed banks, although there are indications that M. flexuosa can form seedling banks in microenvironments subject to water stress conditions. We evaluated this issue considering both morphological and physiological seedling responses to water availability. Mauritia flexuosa seedlings were grown in soils taken from the bottom (organosol) and the edge (gleisol) of a seasonally flooded vereda ecosystem with 0, 40, 60, 80 and 100% available water contents, and their survival and morphologies were evaluated for eight months. At the end of this period, dry mass, photosynthetic parameters, ABA content, leaf ultrastructure, and gene expression associated with aquaporins (MIP family) were evaluated. The seedlings showed phenotypic plasticity, with positive responses to water availability (growth and photosynthetic parameters) as well as the notable ability to survive under water stress in both of the soil types examined. Their responses to water stress were related to ABA accumulation and the maintenance of water homeostasis – with modulation of stomatal control, water use efficiency, and MIP gene expression. Mauritia flexuosa can form seedling banks in both flooded and water-stressed environments, which contributes to its reproductive success and wide distribution. The introduction of seedlings produced ex situ could be a viable alternative for the recovery of degraded areas.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0378112724001932

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