A5076015164- Plant Reproductive Biology
- Plant Molecular Biology Research
- Polysaccharides and Plant Cell Walls
- Plant and Biological Electrophysiology Studies
- Biocrusts and Microbial Ecology
- Cellular Mechanics and Interactions
- Plant Surface Properties and Treatments
- Slime Mold and Myxomycetes Research
- Tree Root and Stability Studies
- Solar-Powered Water Purification Methods
- Advanced Materials and Mechanics
- Fern and Epiphyte Biology
- Polysaccharides Composition and Applications
- Microtubule and mitosis dynamics
- Fluid Dynamics and Heat Transfer
- Plant Water Relations and Carbon Dynamics
- Plant and animal studies
- Structural Analysis and Optimization
- Concrete Corrosion and Durability
- Wastewater Treatment and Nitrogen Removal
- Plant Diversity and Evolution
- Plant Stress Responses and Tolerance
- Hydrogen embrittlement and corrosion behaviors in metals
- Protist diversity and phylogeny
- Magnetic and Electromagnetic Effects
Adolfo Ibáñez University
2013-2024
Queen Mary University of London
2020
Harvard University
2004-2012
John Innes Centre
2011
Pacific University
2010
Stanford University
2000-2010
St. John Fisher College
2010
Université de Montpellier
2010
Max Planck Institute of Colloids and Interfaces
2010
Williams College
2010
Upon release from the anther, pollen grains of angiosperm flowers are exposed to a dry environment and dehydrate. To survive this process, possess variety physiological structural adaptations. Perhaps most striking these adaptations is ability wall fold onto itself prevent further desiccation. Roger P. Wodehouse coined term harmomegathy for folding process in recognition critical role it plays survival grain. There still, however, no quantitative theory that explains how structure...
<b>Background:</b> Available information on the prevalence and management of hypertension in Canadian population dates back to 1986–1992 probably does not reflect current status this major risk factor for cardiovascular disease. We sought evaluate among adults province Ontario. <b>Methods:</b> Potential respondents from randomly selected dwellings within target neighbourhoods 16 municipalities were contacted at their homes request participation study. For potential who agreed participate,...
Although they lack muscle, plants have evolved a remarkable range of mechanisms to create motion, from the slow growth shoots rapid snapping carnivorous and explosive rupture seed pods. Here we review key fluid mechanics principles used by achieve movements, summarizing current knowledge recent discoveries. We begin with brief overview water transport material properties in emphasize that poroelastic timescale diffusion through soft plant tissue imposes constraints on possible for motion....
The division of eukaryotic cells involves the assembly complex cytoskeletal structures to exert forces required for chromosome segregation and cytokinesis. In plants, empirical evidence suggests that tensional within cytoskeleton cause divide along plane minimizes surface area cell plate (Errera’s rule) while creating daughter equal size. However, exceptions Errera’s rule cast doubt on whether a broadly applicable can be formulated plant division. Here, we show selection competition between...
Various plants and fungi have evolved ingenious devices to disperse their spores. One such mechanism is the cavitation-triggered catapult of fern sporangia. The spherical sporangia enclosing spores are equipped with a row 12 13 specialized cells, annulus. When dehydrating, these cells induce dramatic change curvature in sporangium, which released abruptly after cavitation annulus cells. entire ejection process reminiscent human-made catapults one notable exception: lack crossbar that arrests...
The filaree (Erodium cicutarium), a small, flowering plant related to geraniums, possesses unique seed dispersal mechanism: the can fling its seeds up half meter away; and bury themselves by drilling into ground, twisting untwisting in response changes humidity. These feats are accomplished using awns, helical bristles of dead but hygroscopically active tissue attached seeds. Here, we describe kinematics explosive self-burial based on detailed high-speed time-lapse videos. We use these...
A non-destructive replica method and a 3-D reconstruction algorithm are used to analyse the geometry expansion of shoot apex surface. Surface in central zone is slow nearly isotropic while surface peripheral more intense anisotropic. Within zone, rate, anisotropy, direction maximal vary according age adjacent leaf primordia. For each plastochron, this pattern rotated around by Fibonacci angle. Early primordium development divided into four stages: bulging, lateral expansion, separation,...
Plant and animal biomechanists have much in common. Although their frame of reference differs, they think about the natural world similar ways. While researchers studying animals might explore airflow around flapping wings, actuation muscles arms legs, or material properties spider silk, plants flow water fluttering seaweeds, grasping ability climbing vines, wood. Here we summarize recent studies plant biomechanics highlighting several current research themes field: expulsion high-speed...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNature of the water-epoxy interactionL. W. Jelinski, J. Dumais, A. L. Cholli, T. S. Ellis, and F. E. KaraszCite this: Macromolecules 1985, 18, 6, 1091–1095Publication Date (Print):June 1, 1985Publication History Published online1 May 2002Published inissue 1 June 1985https://pubs.acs.org/doi/10.1021/ma00148a008https://doi.org/10.1021/ma00148a008research-articleACS PublicationsRequest reuse permissionsArticle Views605Altmetric-Citations94LEARN ABOUT...
Abstract The amazing structural variety of cells is matched only by their functional diversity, and reflects the complex interplay between biochemical mechanical regulation. How both regulatory layers generate specifically shaped cellular domains not fully understood. Here, we report how cell growth are in fission yeast. Based on quantitative analysis wall expansion elasticity, develop a model for mechanics assembly interact use it to look factors underpinning domain morphogenesis....
The growing concerns over desertification have spurred research into technologies aimed at acquiring water from nontraditional sources such as dew, fog, and vapor. Some of the most promising developments focused on improving designs to collect fog. However, absence a shared framework predict, measure, compare collection efficiencies new prototypes is becoming major obstacle progress in field. We address this problem by providing general theory design efficient fog collectors well concrete...
Summary A salient feature of shoot meristem growth is the maintenance distinct anatomical and morphological features despite a continuous flux cells. To investigate how organization self‐perpetuated, we developed protocol for analysis in 3‐D. Our uses non‐destructive replica method to follow pattern cell expansion divisions on surface over several days. Algorithms reconstruct compute its curvature rate extension were implemented. We applied this approach apical Anagallis arvensis showed that...
Most basidiomycete fungi actively eject their spores. The process begins with the condensation of a water droplet at base spore. fusion onto spore creates momentum that propels forward. use surface tension for ejection offers new paradigm to perform work small length scales. However, this mechanism force generation remains poorly understood. To elucidate how fungal spores make effective tension, we performed detailed mechanical analysis three stages ejection: transfer energy from drop spore,...
Abstract The bromeliad Tillandsia landbeckii thrives in the Atacama desert of Chile using fog captured by specialized leaf trichomes to satisfy its water needs. However, it is still unclear how trichome T. and other species able absorb fine droplets during intermittent events while also preventing evaporation when plant exposed desert’s hyperarid conditions. Here, we explain a 5800-fold asymmetry conductance arises from clever juxtaposition thick hygroscopic wall semipermeable membrane....
Abstract Fluorescent microspheres were used as material markers to investigate the relative rates of cell surface expansion at growing tips Medicago truncatula root hairs. From analysis tip shape and microsphere movements, we propose three characteristic zones in The center apical dome is an area 1- 2-μm diameter with relatively constant curvature high growth rate. Distal apex a more rapidly expanding region 1 2 μm width exhibiting surges off-axis growth. This middle forms annulus maximum...
Abstract Wall expansion in tip-growing cells shows variations according to position and direction. In Medicago truncatula root hairs, wall exhibits a strong meridional gradient with maximum near the pole of cell. Root hair also show striking anisotropy, i.e. over most dome surface rate circumferential exceeds expansion. Concomitant measurements rates stresses reveal that extensibility cell must vary abruptly along meridian maintain To determine mechanical basis we compared patterns predicted...