Concept

Pollen

Publications associées (32)

Structural basis for recognition of RALF peptides by LRX proteins during pollen tube growth

Plant reproduction relies on the highly regulated growth of the pollen tube for sperm delivery. This process is controlled by secreted RALF signaling peptides, which have previously been shown to be perceived by Catharanthus roseus RLK1-like (CrRLK1Ls) mem ...

NATL ACAD SCIENCES2020

Grain morphology reconstruction of crystalline materials from Laue three-dimensional neutron diffraction tomography

Markus Strobl, Marina Garcia Gonzalez, Stavros Samothrakitis

The macroscopic properties of advanced engineering and functional materials are highly dependent on their overall grain orientation distribution, size, and morphology. Here we present Laue 3D neutron diffraction tomography providing reconstructions of the ...

NATURE PUBLISHING GROUP2020

Cloud condensation nuclei activity of six pollenkitts and the influence of their surface activity

Athanasios Nenes

The role of surfactants in governing water interactions of atmospheric aerosols has been a recurring topic in cloud microphysics for more than two decades. Studies of detailed surface thermodynamics are limited by the availability of aerosol samples for ex ...

2019

Real-time, Automated Characterization of 3D Morphology and Mechanics of Developing Plant Cells

Mahmut Selman Sakar, Dimitrios Felekis, Geraldo Mecja

In this article, we introduce the real-time cellular force microscope (RT-CFM), a high-throughput microrobotic platform for mechanical stimulation and characterization of single cells. We developed computer vision algorithms that fully automate the positio ...

SAGE Publications2015

High-throughput analysis of the morphology and mechanics of tip growing cells using a microrobotic platform

Mahmut Selman Sakar, Dimitrios Felekis, Geraldo Mecja

We present a microrobotic platform that combines MEMS-based capacitive force sensing technology, a dual-stage positioning system and a real-time control and acquisition architecture with computer vision automation to manipulate and mechanically characteriz ...

IEEE2014

The European Modern Pollen Database (EMPD) project

Jed Oliver Kaplan, Basil Andrew Stansfield Davis, Pamela Collins, Achille Mauri

Modern pollen samples provide an invaluable research tool for helping to interpret the quaternary fossil pollen record, allowing investigation of the relationship between pollen as the proxy and the environmental parameters such as vegetation, land-use, an ...

Springer Berlin Heidelberg2013

The effect of abrupt climatic warming on biogeochemical cycling and N2O emissions in a terrestrial ecosystem

Jed Oliver Kaplan, Mirjam Pfeiffer

The large, rapid increase in atmospheric N2O concentrations that occurred concurrent with the abrupt warming at the end of the Last Glacial period might have been the result of a reorganization in global biogeochemical cycles. To explore the sensitivity of ...

Elsevier Science Bv2013

Modern pollen rain and fungal spore assemblages from pasture woodlands around Lake Saint-Point (France)

François Gillet

Modern analogs are commonly used to investigate the relationships between modern pollen rain and the surrounding present vegetation and to improve our interpretation of fossil data. We collected modern pollen and spore rain in 18 more or less grazed and/or ...

Elsevier2012

Spatially and genetically distinct control of seed germination by phytochromes A and B

Christian Fankhauser

Phytochromes phyB and phyA mediate a remarkable developmental switch whereby, early upon seed imbibition, canopy light prevents phyB-dependent germination, whereas, later on, it stimulates phyA-dependent germination. Using a seed coat bedding assay where t ...

Cold Spring Harbor Lab Press, Publications Dept2012

Human exposure to allergenic pollens: A comparison between urban and rural areas

François Gillet

Background: Pollinosis is found more frequently in urban areas than in rural environments. This could be partly related to the different types of pollen exposure in these dissimilar areas. The objective of this study was to compare the distribution of poll ...

Elsevier2011

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