Results 61 to 70 of about 4,084 (208)

Insects and Survival: A Review of Primary and Secondary Defense Strategies

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 7, Page 601-624, July 2026.
Based on a review of three decades of literature, insect defense mechanisms are classified into primary (I) and secondary (II) mechanisms of behavioral, morphological, and chemical nature. These mechanisms have been recorded in 22 (I) and 20 (II) orders, respectively.
Lucas Fernandes Silva   +3 more
wiley   +1 more source

ESTUDO DOS CONSTITUINTES QUÍMICOS DAS CASCAS DA MADEIRA DE Trattinnickia peruviana [PDF]

open access: yesActa Amazonica, 1994
O estudo fitoquímico de T. peruvianaSwart ex Loes levou ao isolamento das substâncias liquenxantona, α e β-amirinas, β-sitosterol, estigmasterol e campesierol, cuja identificação química foi feita através da análise de seus dados espectrais.
Maria de Fátima dos Santos MARQUES   +1 more
doaj   +1 more source

Evaluating the African arid corridor hypothesis: A meta‐analysis including the phylogenetic and biogeographical history of Sesamothamnus

open access: yesAmerican Journal of Botany, Volume 113, Issue 5, May 2026.
Abstract Premise We examined the African arid corridor (AAC) disjunction pattern of vascular plants between northeastern and southwestern Africa in the context of geological and climatic events since the late Miocene. We developed a phylogenetic and biogeographical framework for the arid‐adapted genus Sesamothamnus (Pedaliaceae), a classic example of ...
John G. Zaborsky   +6 more
wiley   +1 more source

Multi‐Target Mechanisms of Moroccan Aphrodisiac Plants: An Integrative Computational and Phytochemical Investigation

open access: yesFood Science &Nutrition, Volume 14, Issue 5, May 2026.
Moroccan medicinal plants with in silico‐approved aphrodisiac effects provide 94 phytochemicals. Docking against PDE5, AR, ERα, and aromatase gives top scores for lutein (−10.6), baicalein (−9.5), liquiritigenin (−9.2), and procyanidins (−9.7). ADMET filtering passes baicalein and liquiritigenin but excludes lutein and procyanidins. MD simulations (200 
Amal Elrherabi   +8 more
wiley   +1 more source

Constituintes químicos do caule de Protium hebetatuml (Burseraceae) Chemical constituents from the stem of Protium hebetatuml (Burseraceae)

open access: yesActa Amazonica, 2012
Protium é um gênero que se destaca na família Burceraceae, compreende cerca de 146 espécies, das quais um pequeno número tem sido estudada do ponto de vista fitoquímico.
Túlio de Orleans Gadelha Costa   +4 more
doaj   +1 more source

Flora da Serra do Cipó, Minas Gerais: Burseraceae

open access: yes, 1987
O estudo da família Burseraceae é parte do levantamento da Flora da Serra do Cipó, Minas Gerais. Brasil. Esta família esta representada naquela área pelo gênero Protium, com 3 espécies: P. almecega March., P. brasiliense (Spreng.) Engl. e P. heptaphyllum
Pirani, J.R.
core   +1 more source

Two new species of gall midges (Diptera, Cecidomyiidae) associated with Protium heptaphyllum (Aubl.) Marchand (Burseraceae) in Brazil [PDF]

open access: yes, 2004
Two new species of Cecidomyiidae (Diptera) that form galls on Protium heptaphyllum (Burseraceae) are described: Dactylodiplosis heptaphylli sp. nov. (Rio de Janeiro) and Lopesia similis sp. nov. (Rio de Janeiro).
Monteiro,Ricardo F.   +8 more
core   +1 more source

Caracterización florística de ambientes de la cuenca baja del Río Cucurital, afluente del Río Caroní, Estado Bolívar, Guayana Venezolana Floristic charaterization of enviroments of the lower Cucurital river basin, affluent of Caroní river, Bolívar State, Venezuelan Guayana

open access: yesActa Amazonica, 2009
Como una contribución al conocimiento florístico de la cuenca del Río Caroní se realizaron colecciones botánicas en varios ambientes de la cuenca baja del Río Cucurital, que incluyen formaciones boscosas, tanto en penillanura como ribereñas, morichales ...
Leyda Rodríguez, Giuseppe Colonnello
doaj   +1 more source

Stemflow Dynamics in the Jamari National Forest (Brazilian Amazon): I. The Role of Tree Structure

open access: yesBiotropica, Volume 58, Issue 3, May 2026.
A portion of rainfall that contacts tree canopies is drained down tree stems as stemflow. Stemflow is an underexamined component of rainfall partitioning in tropical forests. To investigate how tree canopy structural attributes influence stemflow in the Brazilian Amazon, we measured stemflow, rainfall, and dendrometric parameters of 56 trees in the ...
Jeferson Alberto de Lima   +5 more
wiley   +1 more source

Wound Healing Activity of the Essential Oil of Bursera morelensis, in Mice

open access: yesMolecules, 2020
Bursera morelensis is used in Mexican folk medicine to treat wounds on the skin. It is an endemic tree known as “aceitillo”, and the antibacterial and antifungal activity of its essential oil has been verified; it also acts as an anti-inflammatory.
Judith Salas-Oropeza   +6 more
doaj   +1 more source

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