Results 61 to 70 of about 49,135 (303)

Grazing-activated chemical defence in a unicellular marine alga [PDF]

, 1997
Marine plankton use a variety of defences against predators, some of which affect trophic structure and biogeochemistry1. We have previously shown2 that, during grazing by the protozoan Oxyrrhis marina on the alga Emiliania huxleyi ...
Wolfe, Gordon V, Kirst, Gunter O, Michael Steinke, Steinke, Michael, Gordon V. Wolfe, Gunter O. Kirst   +5 more
core   +1 more source

Harvestman Phenols and Benzoquinones: Characterisation and Biosynthetic Pathway

Molecules, 2013
Benzoquinones are usually present in arthropod defence exudates. Here, we describe the chemical profiles of 12 harvestman species belonging to the neotropical family Gonyleptidae.
Glauco Machado, Anita J. Marsaioli, Dávila S. Zampieri, Timothy J. Brocksom, Felipe C. Wouters, Daniele F. O. Rocha   +5 more
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Investment in seed physical defence is associated with species' light requirement for regeneration and seed persistence: evidence from Macaranga species in Borneo. [PDF]

PLoS ONE, 2014
The seed stage is often critical in determining the regeneration success of plants. Seeds must survive an array of seed predators and pathogens and germinate under conditions favourable for seedling establishment.
Pimonrat Tiansawat, Adam S Davis, Mark A Berhow, Paul-Camilo Zalamea, James W Dalling   +4 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Shipborne Laser Beam Weapon System for Defence against Cruise Missiles

, 2013
Sea-skim~ing cruise missiles pose the greatest threat to a surface ship in the present-day war scenario. The convenitional close-in-weapon-systems (CIWSs) are becoming less reliable against these new challenges requiring extremely fast reaction time ...
Dudeja, J.P., Kalsey, G.S.
core   +1 more source

Are Toxic Butterflies More Easily Detected by Human ‘Predators’?

Ecology and Evolution
Butterfly colours often signal unprofitability due to toxicity to predators, with more conspicuous colour signals increasing predator avoidance learning.
Marilia Fernandes Erickson, Donald James McLean, Marie E. Herberstein   +2 more
doaj   +1 more source

Anti-predatory behaviour of a land snail Bensonies monticola W.H. Benson, 1838 (Mollusca, Gastropoda, Ariophantidae) against an Aphaenogaster sp. (Arthropoda, Hymenoptera, Formicidae) in the Western Himalaya, India

Journal of Fauna Biodiversity
Predator-prey interactions are key drivers of defensive trait evolution in animals, including terrestrial gastropods. These snails have evolved a diverse range of defensive mechanisms which we broadly categorised as behavioural, morphological, and ...
Ashirwad Tripathy, Nipu Das, Himender Bharti, Arun Singh   +3 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source