Results 41 to 50 of about 694 (120)

Flora das cangas da Serra dos Carajás, Pará, Brasil: Selaginellaceae

open access: yesRodriguésia
Resumo Este estudo trata as espécies de Selaginellaceae registradas nas cangas da Serra dos Carajás, estado do Pará, trazendo descrições, ilustrações, distribuição geográfica e comentários sobre estas.
Luiz Armando de Araújo Góes-Neto   +2 more
doaj   +1 more source

Selaginella P. Beauv. from Minas Gerais, Brazil

open access: yesActa Botânica Brasílica, 2016
Selaginella P. Beauv. is the only genus in the family Selaginellaceae Willk. The genus is monophyletic, has a cosmopolitan distribution, contains about 750 species and can be characterized by the presence of rhizophores, leaves, a ligule, heterospory and
Gustavo Heringer   +2 more
doaj   +1 more source

Estudio palinológico de las Licofitas (Lycopodiopsida) de las Sierras Pampeanas centrales de Argentina

open access: yesBoletín de la Sociedad Argentina de Botánica
Introducción y objetivos: Las Sierras Pampeanas Centrales de Argentina constituyen el cuarto centro de diversidad de licofitas y helechos del Cono Sur, donde habitan representantes de cuatro familias de Licofitas: Huperziaceae, Lycopodiaceae, Isoetaceae
C. Cecilia Macluf   +3 more
doaj   +1 more source

Physiological roles of lignins – tuning cell wall hygroscopy and biomechanics

open access: yesNew Phytologist, Volume 248, Issue 6, Page 2674-2706, December 2025.
Summary Lignins constitute the second most abundant carbon‐storing biopolymers in the biosphere. These phenolic polymers accumulate in different concentrations, compositions, and localisations within and between cell wall layers and cell types. Lignins were acquired during plant terrestrialisation 450 million years ago, and the diversification of their
Edouard Pesquet   +3 more
wiley   +1 more source

An Extraordinary Rosette and Resurrection New Spikemoss, Selaginella iridescens (Selaginellaceae) from Hainan Island, China

open access: yesTaxonomy, 2021
Selaginella iridescens (Selaginellaceae), a new species of spikemoss from Hainan Island, China, is described based on morphological and molecular evidence. The new species morphologically resembles S.
Jie Yang   +4 more
doaj   +1 more source

Staphylococcus aureus AgrA Modulators From South African Antimicrobial Plants

open access: yesChemistry &Biodiversity, Volume 22, Issue 9, September 2025.
The study workflow utilized validated in silico [molecular docking, fingerprinting, pharmacokinetics prediction, molecular dynamics (MD) simulation, ligand‐protein contact maps] tools to bioprospect a wide variety of metabolites surveyed from South African plants with antimicrobial activities, and target them against the key S.
Christiana Eleojo Aruwa, Saheed Sabiu
wiley   +1 more source

Aspectos florísticos e econômicos das pteridófitas de um afloramento rochoso do estado do Rio de Janeiro, Brasil Floristics and economics aspects of the pteridophytes of rocky outcrop from Rio de Janeiro State, Brazil

open access: yesActa Botânica Brasílica, 2006
O presente trabalho apresenta o levantamento das pteridófitas ocorrentes na Pedra de Itacoatiara, afloramento rochoso localizado no Parque Estadual da Serra da Tiririca, no litoral do Município de Niterói, Estado do Rio de Janeiro, Brasil.
Marcelo Guerra Santos   +1 more
doaj   +1 more source

Flavonoids as Promising Akt1 Inhibitors in Cancer Medicine: Insights From Molecular Docking, Dynamics, DFT Calculations, and In Vitro Validation

open access: yesCancer Reports, Volume 8, Issue 8, August 2025.
ABSTRACT Background The PI3K/Akt/mTOR signaling pathway is commonly deregulated in different types of cancers, contributing to tumor proliferation, persistence, and resistance to treatment. Akt1, a crucial kinase within this pathway, plays a critical role in tumor progression and the occurrence of therapeutic resistance.
Shokoofeh Jamshidi   +4 more
wiley   +1 more source

Selaginella guihaia (Selaginellaceae): A new spikemoss species from southern China and northern Vietnam around the Gulf of Tonkin

open access: yesPhytoKeys, 2017
Selaginella guihaia sp. nov. (Selaginellaceae), a new species of spikemoss from southern China and northern Vietnam around the Gulf of Tonkin (Beibu Gulf), is described and illustrated.
Yu-Dong Wu   +2 more
doaj   +3 more sources

Weak link or strong foundation? Vulnerability of fine root networks and stems to xylem embolism

open access: yesNew Phytologist, Volume 244, Issue 4, Page 1288-1302, November 2024.
Summary Resolving the position of roots in the whole‐plant hierarchy of drought‐induced xylem embolism resistance is fundamental for predicting when species become isolated from soil water resources. Published research generally suggests that roots are the most vulnerable organ of the plant vascular system, although estimates vary significantly ...
Beatrice L. Harrison Day   +2 more
wiley   +1 more source

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