Results 11 to 20 of about 1,137 (191)

Floral Resource Partitioning between Centris (Heterocentris) analis (Fabricius, 1804) and Centris (Heterocentris) terminata Smith, 1874 (Hymenoptera, Apidae, Centridini), in an Urban Fragment of the Atlantic Forest

open access: yesSociobiology, 2017
The knowledge on plant species used for the collection of floral resources is crucial to understanding interactions between plants and bees. The aim of the present study was to identify floral resources used by Centris analis and Centris terminata to ...
Reinanda Lima   +6 more
doaj   +1 more source

Nesting and reproductive habits of the solitary bee Centris analis in trap nests under a tropical climate

open access: yesRevista Ciência Agronômica, 2019
Pollination is a key factor in global agricultural production, and there is a need to increase the number of bee species that can be bred for pollination in agriculture, such as the oil-collecting solitary bee Centris (Heterocentris) analis (Fabricius ...
Diego de Vasconcelos Lourenço   +3 more
doaj   +1 more source

Zygostates alleniana (Orchidaceae: Epidendroideae: Cymbidieae: Oncidiinae): Floral structure related to pollinatio

open access: yesAnales del Jardín Botánico de Madrid, 2014
The genus Zygostates Lindl. (Orchidaceae) comprises about 20 species of small Neotropical epiphytic plants, represented in its southernmost limit by the species Z. alleniana.
Natalia E. Gómiz   +2 more
doaj   +1 more source

Three new species of Diascia (Scrophulariaceae) from the Western Cape, South Africa

open access: yesBothalia: African Biodiversity & Conservation, 2009
Three new annual species of Diascia Link & Otto are described from the Western Cape Province of South Africa. D. collina is characterized by greyish magenta flowers with two divergent yellow sacs containing oil-secreting trichomes.
K. E. Steiner
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Oncogenic DMTF1β promotes cancer cell motility by regulating autophagy through ULK1 stabilization

open access: yesMolecular Oncology, EarlyView.
In the current study, we demonstrate that the oncogene DMTF1β regulates ULK1 stability by reducing its proteasomal degradation in cancer cells. This stabilization enables ULK1 to induce autophagy, which in turn facilitates cancer cell migration. Consequently, reduced DMTF1β levels lead to decreased autophagy and impaired cancer cell migration.
Jun Xu   +13 more
wiley   +1 more source

Selective Adsorption of o‐Xylene From all C8 Aromatics via Secondary Connectivity Manipulation in B←N Frameworks

open access: yesAngewandte Chemie, EarlyView.
A programmed assembly strategy based on secondary connectivity integration allows modulating the B←N framework (BNF) microenvironment. Beyond possessing improved stability, the resulting BNFs achieve highly selective adsorption of o‐xylene from all C8 aromatics.
Xiang‐Shuai Li   +9 more
wiley   +2 more sources

Cargas polínicas de abelhas polinizadoras de Byrsonima chrysophylla Kunth. (Malpighiaceae): fidelidade e fontes alternativas de recursos florais Pollen loads of pollinator bees of Byrsonima chrysophylla Kunth. (Malpighiaceae): fidelity and alternative sources of flower resources

open access: yesActa Botânica Brasílica, 2008
Byrsonima chrysophylla, conhecida popularmente como murici pitanga, é uma espécie arbustiva que ocorre em restinga. Dentre seus visitantes, além de abelhas da tribo Centridini, também se encontram com freqüência abelhas Xylocopini.
Éville Karina Maciel Delgado Ribeiro   +2 more
doaj   +1 more source

Hydrogel Microtube Drug Carrier for Catheter‐Based Intravascular Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
This paper proposes hydrogel microtube carriers composed of barium alginate gel, enabling long‐term vascular retention without interrupting blood flow. Intravascular treatments have long been attracting attention for therapeutic efficacy, yet practical delivery methods remained unestablished.
Shota Sato   +8 more
wiley   +1 more source

Differential impacts from an extreme cold spell on subtropical vs. tropical specialist bees in southern Florida

open access: yesEcosphere, 2016
Gradual warming and changes in extreme weather patterns associated with human induced climate change are altering the range distributions of species.
Jason Downing, Haydee Borrero, Hong Liu
doaj   +1 more source

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