Results 91 to 100 of about 135,110 (296)

In Vitro Live Cell Imaging Reveals Nuclear Dynamics and Role of the Cytoskeleton During Asymmetric Division of Pollen Mitosis I in Nicotiana Benthamiana

Cytoskeleton, EarlyView.
ABSTRACT Pollen is a male gametophyte of angiosperms. Following meiosis, the microspore undergoes an asymmetric division called pollen mitosis I (PMI), which produces two cells of different sizes: a large vegetative cell and a small generative cell. Polarized nuclear migration and positioning during PMI are important for successful pollen development ...
Yoko Mizuta, Masako Igarashi, Tomomi Shinagawa, Ikuma Kaneshiro, Haoto Anan, Daisuke Kurihara   +5 more
wiley   +1 more source

The Achromatic Spindle in the Spore Mother Cells of Osmunda regalis [PDF]

, 1900
R. Wilson Smith
openalex   +1 more source

Late Pleistocene to Holocene sedimentation in the Great Blue Hole (Lighthouse Reef, Belize): Results from a 30 m long core

The Depositional Record, EarlyView.
A 30 m long sedimentary succession at the bottom of the Belize Blue Hole represents terrestrial cenote (12.5–7.2 ka BP), restricted marine swamp (7.2–5.7 ka BP) and fully marine lagoonal phases (5.7–0 ka BP) on Lighthouse Reef carbonate platform. Post‐glacial and Holocene sea‐level rise largely controlled the sedimentological, faunal and floral changes
Eberhard Gischler, Dominik Schmitt, Annika Wiegand, Hermann Behling, Lyudmila Shumilovskikh, Martin Melles, Volker Wennrich, Elija Nolte, Jozef Grego, Flavio S. Anselmetti, Hendrik Vogel, Daniel Birgel, Jörn Peckmann   +12 more
wiley   +1 more source

The distribution of spores of B. botulinus in the soil of a restricted area in California. III [PDF]

, 1922
G. E. Coleman
openalex   +1 more source

Carbonate microfacies and transgressive‐regressive sequences of Oxfordian shallow‐water limestones (Korallenoolith, Lower Saxony Basin)

The Depositional Record, EarlyView.
The Bisperode section is one of the most expanded and complete sections with shallow‐marine Oxfordian strata in the LSB. This study provides a reference record for shallow‐marine settings and allows for the correlation of the strata from the LSB with Oxfordian deposits distributed elsewhere in the world.
Deyan Zhang, François‐Nicolas Krencker, Stefan Huck, Ulrich Heimhofer   +3 more
wiley   +1 more source

Ontogenia del esporangio y esporogénesis del licopodio Huperzia brevifolia (Lycopodiaceae) de las altas montañas de Colombia

Revista de Biología Tropical, 2009
Se describe la ontogenia y la esporogénesis en H. brevifolia, en material recolectado en el Parque Nacional Natural El Cocuy (Boyacá-Colombia) a 4200m de altitud.
Edgar Javier Rincón Barón, Leidy Vivivana Gélvez Landazábal, Helkin Giovany Forero Ballesteros, Dagoberto Arrieta Prieto, José Sergio Hleap   +4 more
doaj  

The triterpenoid curcumene mediates the relative hydrophilicity of Bacillus subtilis spores

mBio
Spores of Bacillus subtilis are surrounded and protected by the coat and the crust, multi-layered structures mainly made of proteins and polysaccharides.
Stefany Castaldi, Giuliana Donadio, Ivana Staiano, Ezio Ricca, Rachele Isticato   +4 more
doaj   +1 more source

Action de températures élevées, voisines de la température léthale, sur les spores de deux Champignons [PDF]

, 1959
Gaston Doguet
openalex   +1 more source

Testing the core–periphery hypothesis: a standardised multi‐phylum assessment of genetic diversity of marine coastal species

Ecography, EarlyView.
The core–periphery hypothesis (CPH) predicts that genetic diversity is greatest at the centre and lowest at the edges of a species' distribution because genetic diversity is a function of a species' abundance, which is also expected to be greatest at the centre and lowest at the edges of the distribution. Variants of the CPH include the ‘Ramped North' (
Daniel Cárcamo, Mailiu Díaz Peña, Jonathan P. A. Gardner   +2 more
wiley   +1 more source

Morfología de esporas y sinangios en especies neotropicales del helecho Marattia (Marattiaceae)

Revista de Biología Tropical, 2011
La familia Marattiaceae, que incluye de cuatro a seis géneros, presenta estructuras esporógenas de dos tipos: sinangios en Christensenia, Danaea y Marattia; y soros con eusporangios libres en Angiopteris y Archangiopteris.
María del Carmen Lavalle, Adriana Mengascini, Mónica Rodríguez   +2 more
doaj