Results 91 to 100 of about 78,784 (260)

What Brown saw and you can too [PDF]

, 2010
A discussion is given of Robert Brown's original observations of particles ejected by pollen of the plant \textit{Clarkia pulchella} undergoing what is now called Brownian motion.
Brian Collett, Brown R., Brown R., Brown R., Dara Newman, David Bilderback, Douglas D., Ford B. J., Ford B. J., Ford B. J., Ford B. J., Ford B. J., Heslop-Harrison J., Heslop-Harrison Y., Kenneth Bart, Kirsten U., Mabberley D. J., Philip Pearle, Ramsbottom J., Scott Samuels, van der Pas P. W.   +20 more
core   +3 more sources

Buck Wheat: Nutritional, Bioactive Characteristics, Health Benefits, and Side Effects

Future Postharvest and Food, EarlyView.
ABSTRACT Micronutrient deficits have resulted from an over‐reliance on a small number of cereal crops for food security. The agricultural sector faces severe sustainability issues due to the rapid growth of the world's population and sudden climatic changes.
Momina Farooq, Sajad Ahmad Mir, Zahida Naseem   +2 more
wiley   +1 more source

Proximal aperture in Cephalanthera longifolia (L.) Fritsch (Orchidaceae) pollen: a rare germination site for angiosperms

Botanical Studies
The pollen dispersal unit of the epidendroid species, Cephalanthera longifolia, is a soft pollinium consisting of loosely connected tetrads that are agglutinated by elastoviscin.
Carola Purgina, Friðgeir Grímsson, Silvia Ulrich   +2 more
doaj   +1 more source

Pollen morphology of Curroria, Mondia, Socotranthus and Stomatostemma (Periplocaceae)

Bothalia: African Biodiversity & Conservation, 1993
The pollen morphology of I Planch., O Skeels, Socotranthus Kuntze and Stomatostemma N.E. Br. was studied.All the genera are characterized by pollen grains arranged in tetrads. The arrangement of the grains may be rhomboidal, tetrahedral or decussate. The
R. L. Verhoeven, H. J. T. Venter
doaj   +1 more source

The MED30 subunit of mediator complex is essential for early plant development and promotes flowering in arabidopsis thaliana [PDF]

, 2019
Mediator is a large multiprotein complex that is required for the transcription of most, if not all, genes transcribed by RNA Polymerase II. A core set of subunits is essential to assemble a functional Mediator in vitro and, therefore, the corresponding ...
Arellano, Sofía Maité, Arias, Leonardo Agustín, Cerdan, Pablo Diego, Fiol, Diego Fernando, Iñigo, Sabrina, Jaskolowski, Aime, Lorenzi, Hernan, Muschietti, Jorge Prometeo, Oldrá, María Belén, Pagnussat, Gabriela Carolina, Sede, Ana Rocío   +10 more
core   +1 more source

Beyond Tradition: An Integrated Toxicological, Ecological, and Public Health Perspective on Aristolochic Acids

Journal of Applied Toxicology, EarlyView.
ABSTRACT Aristolochia species have long been used in traditional medicine for their presumed anti‐inflammatory, analgesic and antimicrobial properties. However, extensive toxicological and epidemiological evidence now demonstrates that these plants contain aristolochic acids (AAs) I and II, highly potent nephrotoxic, genotoxic, and carcinogenic ...
Victor Ventura de Souza, Lara Rodrigues De Andrade, Tatiana da Silva Souza   +2 more
wiley   +1 more source

Practical and cost-effective method for the isolation of pollen grains from various sources

Acta Palaeobotanica
Mock standards, with known concentrations and varied characteristics, when analyzed alongside unknown samples, can provide evaluation, optimization, and validation of scientific methods.
Ozge S. Kuddar, Benjamin J. Callahan, Christopher Bernhardt, Kelly A. Meiklejohn   +3 more
doaj   +1 more source

A Rho family GTPase controls actin dynamics and tip growth via two counteracting downstream pathways in pollen tubes. [PDF]

, 2005
Tip growth in neuronal cells, plant cells, and fungal hyphae is known to require tip-localized Rho GTPase, calcium, and filamentous actin (F-actin), but how they interact with each other is unclear.
Dowd, Peter, Fu, Ying, Gilroy, Simon, Gu, Ying, Li, Shundai, Vernoud, Vanessa, Yang, Zhenbiao   +6 more
core   +3 more sources

Holocene sea‐level and environmental changes on the Isle of Mull, Scotland

Journal of Quaternary Science, EarlyView.
ABSTRACT Sea‐level and coastal changes are reconstructed on the Isle of Mull, western Scotland, from 10 988 to 10 507 cal BP to the present. This research has produced the first SLIP for the Isle of Mull. A multiproxy approach including pollen, spore, foraminifera and diatom analyses reveals palaeoenvironmental changes from two coastal sites.
Katherine A. Selby, Jane Wheeler, William E. N. Austin, Heather Austin, Tom Hill, Sarah L. Bradley, Sally Derrett   +6 more
wiley   +1 more source

MICROMORPHOLOGY CHARACTERIZATION POLLEN GRAINS OF SUBGENERA PRUNUS AND CERASUS (ROSACEAE) IN KURDISTAN REGION-IRAQ

The Iraqi Journal of Agricultural science
This investigation was aimed to study pollen grains of subgenera Prunus and Cerasus. The polleniferous materials were collected from different places of Kurdistan region of Iraq living specimens.
Ameena M. Hasan, Saleem E. Shahbaz, Shamiran S. Abdulrahman   +2 more
doaj   +1 more source