Results 81 to 90 of about 61,221 (252)

Notas adicionais sobre Mabea angularis Hollander (Euphorbiaceae), primeira citação para o estado do Pará, Brasil

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2009
Mabea angularis Hollander é citada pela primeira vez no estado do Pará. É apresentada a primeira descrição de flores, que eram desconhecidas da literatura.
Maria José de Sousa Trindade   +1 more
doaj   +1 more source

Physiological roles of lignins – tuning cell wall hygroscopy and biomechanics

open access: yesNew Phytologist, EarlyView.
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

Gelechiidae Moths Are Capable of Chemically Dissolving the Pollen of Their Host Plants [PDF]

open access: yes, 2011
Background: Many insects feed on pollen surface lipids and contents accessible through the germination pores. Pollen walls, however, are not broken down because they consist of sporopollenin and are highly resistant to physical and enzymatic damage. Here
Chen, Shi   +4 more
core   +1 more source

Bract size affects resource availability and fruit set in a hummingbird‐pollinated plant with distyly polymorphism

open access: yesPlant Biology, EarlyView.
In Psychotria poeppigiana, larger bracts honestly signal greater nectar availability but have higher mortality, while smaller bracts produce more fruit, revealing a surprising trade‐off and hints of sexual role specialization in this distylous species. Abstract Plants can use non‐floral signals to advertise the presence of resources to pollinators. The
R. Trevizan   +4 more
wiley   +1 more source

Caracterización morfofisiológica de Jatropha curcas L. variedad Brasil cultivada en dos zonas de Colombia Morphophysiological characterization of Jatropha curcas L. variety Brazil in two areas of Colombia

open access: yesActa Agronómica, 2010
La Jatrofa o piñón (Jatropha curcas L.) es una planta oleaginosa que ha adquirido importancia en Colombia por su alta producción y calidad de aceite para biocombustibles, despertando el interés en la investigación de su fisiología y desempeño productivo.
Erik Alexander Pedraza Sánchez   +1 more
doaj  

Genome-wide identification, phylogeny, and expression analysis of the SBP-box gene family in Euphorbiaceae

open access: yesBMC Genomics, 2019
Background Euphorbiaceae is one of the largest families of flowering plants. Due to its exceptional growth form diversity and near-cosmopolitan distribution, it has attracted much interest since ancient times.
Jing Li   +3 more
doaj   +1 more source

Soil seed banks in three restored wildlife corridors; implications for linear habitats in tropical environments

open access: yesRestoration Ecology, EarlyView.
Restoring habitat corridors between fragments and continuous forests can potentially counter the effects of isolation, especially in tropical forests where species sensitivity to fragmentation is high. The ability of restored linear habitats to absorb natural disturbance in inimical surroundings potentially reflects resilience, an important aim of ...
Nigel I. J. Tucker   +3 more
wiley   +1 more source

Report of new invasive scale insects (Hemiptera: Coccoidea), Crypticerya multicicatrices Kondo and Unruh (Monophlebidae) and Maconellicoccus hirsutus (Green) (Pseudococcidae), on the islands of San Andres and Providencia, Colombia, with an updated taxonomic key to iceryine scale insects of South America [PDF]

open access: yes, 2012
The multicicatrices fluted scale, Crypticerya multicicatrices Kondo and Unruh (Hemiptera: Coccoidea: Monophlebidae) is reported from the islands of San Andres and Providencia, Colombia, as a recent invasive species.
Gullan, Penny   +2 more
core   +2 more sources

A new phylogeny of Anastrepha (Diptera: Tephritidae) based on nuclear loci obtained by phylogenomic methods

open access: yesSystematic Entomology, EarlyView.
We present an extensive phylogenetic analysis, based on 293 nuclear loci and 728 individuals representing 237 species of Anastrepha, the largest and most economically important New World genus of Tephritidae. The analysis strongly supports the monophyly of most Anastrepha species groups, also revealing previously unknown relationships among species and
Allen L. Norrbom   +19 more
wiley   +1 more source

Comprehensive Evaluation of Methanolic Fruits Extract of Jatropha gossypifolia L.: Neuropharmacological, Cytotoxic, Anthelmintic, GC–MS Profiling, and Molecular Docking Studies

open access: yesPharmacology Research &Perspectives, Volume 13, Issue 6, December 2025.
The anxiolytic properties of the methanolic fruit extract of Jatropha gossypifolia (JGF‐ME) were investigated using the Elevated Plus Maze (EPM), Hole Board Test (HBT), and Light–Dark Box Test (LDT), while its antidepressant potential was examined through the Forced Swimming Test (FST) and Tail Suspension Test (TST).
Md. Arafat   +10 more
wiley   +1 more source

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