Results 1 to 10 of about 3,118 (119)

Características Morfológicas e Bioquímicas do pólen coletado por cinco espécies de Meliponíneos da Amazônia Central [PDF]

Acta Amazonica, 2002
Durante um ano, o pólen transportado por Melipona compressipes manaosensis, Melipona seminigra merrillae, Melipona seminigra seminigra, Frieseomelitta sp. e Scaptotrigona sp. foi coletado diretamente das corbículas das operárias.
Antonio Carlos MARQUES-SOUZA, Ires Paula de Andrade MIRANDA, Cleonice de Oliveira MOURA, Afonso RABELO, Edelcílio Marques BARBOSA   +4 more
doaj   +1 more source

Establishment of a Single‐Cell Minimal Medium: A Case Study for Microfluidic Cultivation of Corynebacterium glutamicum

Biotechnology and Bioengineering, Volume 123, Issue 6, Page 1648-1660, June 2026.
Conventional bulk media are often unsuitable for single‐cell cultivation and analysis because they provide excess nutrients or lack essential components. Redesigning the medium allows for controlled, defined growth, enabling the development of a robust minimal medium that supports quantitative and reproducible single‐cell analysis across different ...
Judith Wegmann, Matthias Pesch, Juliane Zwoch, Andreas Schmid, Dietrich Kohlheyer, Alexander Grünberger   +5 more
wiley   +1 more source

Identificação de tipos polínicos não registrados nos estudos aeropalinológicos do Brasil Identification of pollen types not registered in aeropalinologic studies in Brazil

Ciência Rural, 2006
Os objetivos deste trabalho foram realizar um monitoramento aerobiológico, identificando e quantificando os tipos de grãos de pólen da atmosfera da cidade de Caxias do Sul, RS. Este estudo teve início em janeiro de 2001 e término em dezembro de 2002.
Sandra Maria Vergamini, Adelaide Juvena Kegler Ramos, Leandro Duso, Francieli Sbersi, Taísa Fedrizzi Maffazzioli   +4 more
doaj   +1 more source

Espectro polínico da própolis de Scaptotrigona aff. postica (Hymenoptera, Apidae, Meliponini) em Barra do Corda, MA, Brasil [PDF]

Acta Amazonica, 2015
A própolis é uma substância resinosa coletada por abelhas de diferentes partes de uma planta, portanto, sua qualidade é relacionada à sua origem botânica. O objetivo deste trabalho foi verificar se os tipos polínicos encontrados indicam a origem botânica
Helder Rocha de SOUZA, Angela Maria da Silva CORRÊA, Maria Amélia Vitorino da CRUZ-BARROS, Patrícia Maia Correia de ALBUQUERQUE   +3 more
doaj   +2 more sources

Medicare Utilization and Reimbursement Trends for Free Flaps in Otolaryngology, Plastic Surgery, and Maxillofacial Surgery

Otolaryngology–Head and Neck Surgery, Volume 174, Issue 6, Page 1642-1646, June 2026.
Abstract Free flap procedures are important components of reconstructive surgery in otolaryngology, plastic surgery, and maxillofacial surgery. This research investigates trends in utilization, charges, and Medicare reimbursements for free flap procedures performed across these specialties.
Kyle Polen, Alan Napole, Gavin Turner, Robert M. Brody, Ryan M. Carey   +4 more
wiley   +1 more source

From pollen provision to pollinator: Species‐specific sterol assimilation by wild bees in urban landscapes

Functional Ecology, Volume 40, Issue 6, Page 1906-1920, June 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Human‐driven landscape change, particularly urbanization, is reshaping pollinator communities, yet the functional traits that mediate species persistence remain poorly understood. Dietary specialization is commonly used to predict species vulnerability.
Yan Yang, Joan Casanelles‐Abella, Marco Moretti, Consuelo M. De Moraes, Mark C. Mescher, Pengjuan Zu   +5 more
wiley   +1 more source

Relationship between pollen morphology and chromosome numbers in Brazilian species of Lippia L. (Verbenaceae)

Anais da Academia Brasileira de Ciências, 2013
The pollen morphology and exine structure of 17 species of Lippia L. were investigated in this work using light and scanning electron microscopy. Among the species studied, 14 showed tricolporate pollen grains, two had tri- and tetracolporate pollen ...
Saulo M. Sousa, Patrícia M.O. Pierre, Giovana A. Torres, Lisete C. Davide, Lyderson F. Viccini   +4 more
doaj   +1 more source

Silene, a versatile model system: from sex and genome evolution to ecology and speciation

New Phytologist, Volume 250, Issue 6, Page 3613-3630, June 2026.
Summary Fundamental and applied research in evolutionary biology benefits from the use of model systems in which approaches from disparate disciplines can be integrated. Here, we review recent progress in evolutionary research on the long‐standing model system Silene, a large genus with a well‐resolved phylogeny and newly available, expanded genomic ...
Sophie Karrenberg, Václav Bačovský, Andrea E. Berardi, Isabelle De Cauwer, Tatiana Giraud, Fanny E. Hartmann, Roman Hobza, Vojtěch Hudzieczek, Gabriel A.B. Marais, Jenna R. Miladin, Bengt Oxelman, Alexander S.T. Papadopulos, Daniel B. Sloan, Janet C. Steven, Helena Štorchová, Pascal Touzet, Fabienne Van Rossum   +16 more
wiley   +1 more source

IMPORTÂNCIA DA ESTIMATIVA DO FLUXO GÊNICO EM GRAMÍNEAS DE CLIMA TROPICAL PARA O MELHORAMENTO GENÉTICO DE PLANTAS

Evidência, 2016
O fluxo gênico, ou escape gênico, é definido como a troca de alelos entre indivíduos, isto é, a transferência de alelos de uma variedade/espécie para outra.
Bruno da Costa Paniago, Cacilda Borges do Valle   +1 more
doaj   +1 more source

The abundance of pollen coat small signaling proteins shows limited convergence between independent selfing transitions in Arabidopsis and Capsella

New Phytologist, Volume 250, Issue 5, Page 3460-3474, June 2026.
Summary In plants, a key example of convergence is the repeated evolution of floral traits associated with the transition from outcrossing to self‐fertilization, often resulting in the ‘selfing syndrome’ (e.g. reduced flower size and loss of scent). However, potentially overlooked changes concern the pollen coat, which plays a role in different aspects
Ömer İltaş, Luciana Salomon, Martin Kovačik, Martin Čertner, Pavel Talacko, Karel Harant, Said Hafidh, Clément Lafon Placette   +7 more
wiley   +1 more source