Results 51 to 60 of about 25,273 (225)

Dominance of Ricinus communis in the Semi‐Arid Region Mediated by Allelopathy

open access: yesWeed Research, Volume 66, Issue 2, March/April 2026.
ABSTRACT The introduction of invasive alien species can adversely affect the functioning of natural ecosystems. Ricinus communis L., widely present in the Brazilian semi‐arid region, establishes itself in areas with native species, such as Handroanthus impetiginosus (Mart.
Bruno M. Alcântara   +7 more
wiley   +1 more source

Undervalued Ecosystems: Ponds Boost Regional Macrophyte Diversity

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT Ponds—depressional wetlands with ≤ 2 ha—are largely undervalued worldwide, despite serving as crucial diversity reservoirs. However, the extent to which ponds support diversity at the landscape scale is still underappreciated. Here, we investigate the contributions of ponds to macrophyte beta and gamma diversity in a subtropical wetland ...
Daniel Grasel   +3 more
wiley   +1 more source

A LONG CHAIN ALCOHOL AND TWO STEROL COMPOUNDS FROM THE HEXANE EXTRACT OF STEM BARK OF Aglaia odorata Lour. (Meliaceae)

open access: yesIndonesian Journal of Chemistry, 2010
A long chain alcohol, 1-eicosanol together with two sterols, β-sitosterol and stigmasterol had been isolated from hexane extract of stem bark of pacar cina (Aglaia odorata Lour) (Meliaceae).
Tukiran Tukiran   +3 more
doaj   +1 more source

Oxo-aglaiastatin-mediated inhibition of translation initiation [PDF]

open access: yes, 2019
We thank Dr. Elias George (McGill University) for the kind gift of Pgp-1-expressing HeLa cells. RIM was supported by a doctoral fellowship from the Cole Foundation.
Brown, Lauren E.   +9 more
core   +2 more sources

Host Status of Brazilian Native Tree Species to Root‐Knot Nematodes

open access: yesForest Pathology, Volume 56, Issue 1, February 2026.
ABSTRACT Root‐knot nematodes (RKN, Meloidogyne spp.) are among the most important plant pathogenic organisms, causing significant damage, with a wide geographical distribution and being difficult to control. The ability of these nematodes to parasitize native trees from Brazilian biomes is little understood.
Ismail Teodoro de Souza Júnior   +6 more
wiley   +1 more source

FAMILIA MELIACEAE

open access: yesFlora del Bajío y de Regiones Adyacentes, 1993
Familia de amplia distribución pantropical, con alrededor de 50 géneros. El número de especies consideradas ha variado de 550 a 800 y hasta 1400, según diferentes autores, lo cual da una idea del estado de incertidumbre en que se ha encontrado el arreglo taxonómico y el excesivo número de nombres que se manejan en la literatura, todo ello debido a la ...
Graciela Calderón de Rzedowski   +1 more
openaire   +1 more source

DNA metabarcoding reveals greater plant diversity than morphological seed analysis of bird feces

open access: yesApplications in Plant Sciences, Volume 14, Issue 1, January-February 2026.
Abstract Premise Fruit‐eating birds drive seed dispersal in recovering tropical ecosystems, shaping forest regeneration. Molecular techniques, such as DNA metabarcoding, enable diet analysis from feces and can provide complementary frugivory data where dispersal is infrequent, as well as aid in seed identification in hyper‐diverse regions lacking ...
Carina I. Motta   +3 more
wiley   +1 more source

BRIONONIC ACID FROM THE HEXANE EXTRACT OF Sandoricum koetjape MERR STEM BARK (meliaceae)

open access: yesIndonesian Journal of Chemistry, 2010
An oleane-type triterpenoid, briononic acid was isolated from hexane extract of the stem bark of Sandoricum koetjape Merr. (Meliaceae). This structure had been established based on spectroscopic data (UV, IR, and NMR) and by comparison with spectroscopic
Tukiran Tukiran   +4 more
doaj   +1 more source

Quantifying the abundance of four large epiphytic fern species in remnant complex notophyll vine forest on the Atherton Tableland, north Queensland, Australia [PDF]

open access: yes, 2013
Epiphytes are generally considered rare in complex forests on the western edge of the Atherton Tablelands, north Queensland. This assertion is based on comparisons with wetter forests in the Wet Tropics bioregion, but is of limited use in restoration ...
Cummings, Jason   +2 more
core  

Oleanane Triterpenoids from Cedrela montana (Meliaceae) [PDF]

open access: yesZeitschrift für Naturforschung C, 2002
Two new oleanane-type triterpenes, characterized as 3-oxo-11α,12α-epoxy-oleanan-28,13β- olide and 3-oxo-olean-11-en-28,13β-olide , were isolated from the fruits and seeds of Cedrela montana (Meliaceae). In addition, the known compounds oleanonic acid , a mixture of β-sitosterol and stigmasterol, and the limonoid photogedunin were also isolated.
Leonardo, Castellanos   +3 more
openaire   +2 more sources

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