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The impact of drought on phellem development

2024-08Artigo científico Acesso aberto
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dc.contributor.authorBarros, Pedro M.
dc.contributor.authorSapeta, Helena
dc.contributor.authorLucas, Diogo A.
dc.contributor.authorOliveira, M. Margarida
dc.contributor.institutionInstituto de Tecnologia Química e Biológica António Xavier (ITQB)
dc.contributor.pblElsevier Science B.V., Amsterdam.
dc.date.accessioned2025-05-07T21:19:58Z
dc.date.available2025-05-07T21:19:58Z
dc.date.issued2024-08
dc.descriptionFunding Information: This work was supported by FCT - Funda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia, I.P., through GREEN-IT Bioresources for Sustainability R&D Unit base (DOI: 10.54499/UIDB/04551/2020) and programmatic (DOI: 10.54499/UIDP/04551/2020) funding, LS4FUTURE Associated Laboratory (DOI: 10.54499/LA/P/0087/2020); through the Post-Doc contract awarded to P.M.B. (DOI: 10.54499/DL57/2016/CP1369/CT0029); and the projects CorkREMODEL (DOI: 10.54499/EXPL/ASP-SIL/1190/2021) and SuberInStress (PTDC/BIA-FBT/29704/2017), funded by FCT/MCTES and co-financed by FEDER in the scope of POR Lisboa 2020. This work also was partially supported by PPBI-Portuguese Platform of BioImaging (PPBI-POCI-01-0145-FEDER-022122) co-funded by national funds from OE - \u2018Or\u00E7amento de Estado\u2019 and by European funds from FEDER - \u2018Fundo Europeu de Desenvolvimento Regional\u2019. Publisher Copyright: © 2024 Elsevier B.V.
dc.description.abstractQuercus suber (cork oak) is a sustainably exploited forest resource, producing a unique renewable raw material known as cork. With drought events imposing a negative impact on tree vitality, further research is needed to enhance our understanding of the genetic and environmental factors regulating cork development, to foster the resilience of cork oak ecosystems. We focused on characterizing long-term drought-induced molecular adaptations occurring in stems, and identifying key genetic pathways regulating phellem development. One-year-old cork oak plants were grown for 6 months under well-watered, or water-deficit (WD) conditions and main stems were targeted for histological characterization and transcriptomic analysis. WD treatment reduced meristem activity at both vascular cambium and phellogen, impairing secondary growth. Transcriptional analysis revealed a global downregulation of genes related to cell division, differentiation, and cell wall biogenesis in phellem, inner bark, and xylem under WD conditions. Phellem and inner bark showed upregulation of photosynthesis-related genes, highlighting a determinant role of stem photosynthesis in the adaptation to long-term drought. We show that developing phellem cells contain chloroplasts and their abundance increases under WD. Lastly, we propose new candidate regulatory genes involved in regulating phellogen activity and demonstrate the role of phellem in drought-induced bark photosynthesis in young plants.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent11172447
dc.identifier.doi10.1016/j.envexpbot.2024.105785
dc.identifier.issn0098-8472
dc.identifier.otherPURE: 99961505
dc.identifier.otherPURE UUID: 40e75a5f-d4ce-4093-a40c-29dbed30d6d7
dc.identifier.otherScopus: 85192099653
dc.identifier.otherORCID: /0000-0001-5626-0619/work/183499314
dc.identifier.urihttp://hdl.handle.net/10362/182754
dc.identifier.urlhttps://www.scopus.com/pages/publications/85192099653
dc.language.isoeng
dc.peerreviewedyes
dc.subjectBark
dc.subjectDrought
dc.subjectPeriderm
dc.subjectPhellogen
dc.subjectPhotosynthesis
dc.subjectVascular cambium
dc.subjectEcology, Evolution, Behavior and Systematics
dc.subjectAgronomy and Crop Science
dc.subjectPlant Science
dc.subjectSDG 7 - Affordable and Clean Energy
dc.titleThe impact of drought on phellem developmenten
dc.title.subtitleIdentification of novel gene regulators and evidence of photosynthetic activity in cork oak stemsen
dc.typejournal article
degois.publication.titleEnvironmental and Experimental Botany
degois.publication.volume224
dspace.entity.typePublication
rcaap.rightsopenAccess

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