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dc.contributor.authorSILVA, T. L. C. da
dc.contributor.authorBRAGA, Í. de O.
dc.contributor.authorBARBOSA, L. F.
dc.contributor.authorLEAO, A. P.
dc.contributor.authorSANTOS, W. R. dos
dc.contributor.authorTOGAWA, R. C.
dc.contributor.authorMARTINS, N. F.
dc.contributor.authorSOUSA, C. A. F. de
dc.contributor.authorSOUZA JUNIOR, M. T.
dc.date.accessioned2026-08-04T12:48:54Z-
dc.date.available2026-08-04T12:48:54Z-
dc.date.created2026-08-04
dc.date.issued2026
dc.identifier.citationPlant Science, v. 372, 113347, 2026.
dc.identifier.issn0168-9452
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1188882-
dc.descriptionAbstract: Soil salinization severely threatens global food security, necessitating systematic investigations of halophytes like Portulaca oleracea to decode the molecular mechanisms of environmental resilience. Utilizing an integrated framework of deep learning-based genome annotation (58,817 predicted genes; 96.5% BUSCO completeness), multi-tissue RNA-Seq, phylogenomics, and gene regulatory network (GRN) inference, the synergistic orchestration of 78 aquaporins (AQPs), 525 heat shock proteins (HSPs), and 119 late embryogenesis abundant (LEA) proteins was elucidated. The active transcriptome, encompassing 39,065 expressed loci, revealed a systemic growth-defense trade-off. Tissues displayed distinct adaptive mechanisms: leaves modulated intracellular water balance via specialized AQPs, whereas adult roots maintained proteostasis through robust HSP20/HSP70 induction. Phylogenomic clustering across 154 species demonstrated that salinity tolerance constitutes an evolutionary mosaic, identifying 81 halophyte-exclusive orthogroups and 1129 species-specific clusters. Comparative topology across six independent GRNs (4.2M–5.3 M edges) unmasked a highly modular transcriptional reprogramming strategy governed by a core apparatus of 22 stress-exclusive regulators, with functional enrichment heavily prioritizing protein dimerization and chromatin remodeling. Theoretically, the distinct convergence of Trihelix transcription factors with guard cell differentiation pathways offers a candidate transcriptomic framework to explain the plant's characteristic C4–CAM photosynthetic plasticity under severe osmotic pressure. Practically, these evolutionary blueprints and specific master switches transcend single-gene transgenic limitations. Utilizing these root-sustained and stress-inducible targets under localized promoters provides a naturally optimized, network-level precision engineering roadmap to transfer robust, compartmentalized halotolerance to sensitive glycophytic crops.
dc.language.isoeng
dc.rightsopenAccess
dc.titleComparative phylogenomics and transcriptional regulatory networks of AQPs, HSPs, and LEA proteins in salt-stressed Portulaca oleracea.
dc.typeArtigo de periódico
dc.subject.thesagroPortulaca Oleracea
dc.subject.thesagroBeldroega
dc.subject.nalthesaurusAbiotic stress
dc.subject.nalthesaurusTranscriptomics
dc.subject.nalthesaurusGene regulatory networks
riaa.ainfo.id1188882
riaa.ainfo.lastupdate2026-08-04
dc.identifier.doihttps://doi.org/10.1016/j.plantsci.2026.113347
dc.contributor.institutionTHALLITON LUIZ CARVALHO DA SILVA, UNIVERSIDADE FEDERAL DE LAVRAS; ÍTALO DE OLIVEIRA BRAGA, UNIVERSIDADE FEDERAL DE LAVRAS; LETÍCIA FONSECA BARBOSA, UNIVERSIDADE DE BRASÍLIA; ANDRE PEREIRA LEAO, CNPAE; WELLINGTON RANGEL DOS SANTOS, CNPAE; ROBERTO COITI TOGAWA, CENARGEN; NATALIA FLORENCIO MARTINS, CNPAT; CARLOS ANTONIO FERREIRA DE SOUSA, CPAMN; MANOEL TEIXEIRA SOUZA JUNIOR, CNPAE.
Aparece en las colecciones:Artigo em periódico indexado (CNPAE)

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