Cuticular wax profiling of Populus trichocarpa and P. balsamifera reveals surface similarities with underlying differences
Rattachement africain : ca, nz. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Cuticular waxes are a mixture of hydrophobic components protecting plant tissues from the environment. Populus trichocarpa and P. balsamifera are closely-related tree species with broad North American distribution; however, variation in their cuticular wax composition across their range remained poorly understood. To address this gap, stem and leaf waxes from both species across three developmental stages were profiled by gas chromatography-mass spectrometry. A core set of compounds shared across tissues, accessions, and developmental stages was detected, as well as tissue- or species-specific constituents such as phenolics and alkenes. Phenolic-derived compounds were more prevalent at early stages of development compared to the predominantly aliphatic composition of mature tissues. Moreover, early stage leaves also showed enhanced protection from desiccation and oxidative stress in a subset of accessions. Alkenes, found exclusively in leaves, segregated the poplar accessions into alkene-producing and alkene-lacking phenotypes. GWAS analysis of 174 P . trichocarpa accessions identified a region on chromosome 10 containing a tandem cluster of ketoacyl CoA synthases associated with alkene accumulation in P. trichocarpa , which was not significantly associated in 133 P. balsamifera individuals examined. These findings reveal dynamic, developmentally regulated, and species-specific variation in poplar wax profiles. Understanding these chemical traits offers new opportunities to develop Populus varieties with enhanced environmental resilience and adaptive potential.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Cuticular wax profiling of Populus trichocarpa and P. balsamifera reveals surface similarities with underlying differences
- Date Crossref
- 11/06/2026
- Éditeur
- Frontiers Media SA
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Toronto Department of Biological Sciences pays non établi dans la noticeUniversité ou école supérieure
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University of Toronto Scarborough pays non établi dans la noticeUniversité ou école supérieure
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University of British Columbia Department of Zoology pays non établi dans la noticeUniversité ou école supérieure
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AgResearch pays non établi dans la noticeOrganisme public
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Bioeconomy Science Institute Analytics and Modeling pays non établi dans la noticeOrganisme public
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Agriculture and Agri-Food Canada pays non établi dans la noticeOrganisme public
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Faculty of Forestry Department of Wood Science pays non établi dans la noticeUniversité ou école supérieure
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Indian Head Research Farm pays non établi dans la noticeInstitution
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Faculty of Science Department of Botany pays non établi dans la noticeUniversité ou école supérieure
Department of Biological Sciences — University of Toronto, University of Toronto Scarborough et Department of Zoology — University of British Columbia, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.