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Earthquakes, Glue and Grappling Hooks: Scientists Dissect the Movement of Bacteria

By Guest PostFebruary 15, 2013Scienceanti infective, avalanche motions, california nanosystems institute, combat harmful microbes, combat microbial pathogenesis, earthquakes, frequency, fruiting body, gerard wong, glide along surface, glue, grappling hooks, henry samueli school, human tissue, intensity, karin a dahmen, max gibiansky, microscopic bacteria, molecular glue, molecular mechanism, movement of bacteria, myxococcus xanthus, pathogenic bacteria, social structures, tectonic plates, tectonic plates move, therapeutic strategies, ucla, university of Illinois, urbana-champaign, wei hu, wenyuan shi

A team led by researchers from the UCLA Henry Samueli School of Engineering and Applied Science has discovered that microscopic bacteria have a lot in common with earthquakes — when it comes to their jolting movements.

In a new study published in the peer-reviewed Proceedings of the National Academy of Sciences, the scientists also report that a molecular “glue” produced by the bacteria to help them adhere to surfaces also acts as a sort of transportation lubricant, helping them move and organize into rudimentary social structures. These discoveries, they say, could lead to new ways to combat harmful microbes in the long term. (more…)

Ocean Acidification Linked With Larval Oyster Failure in Hatcheries

By Guest PostApril 13, 2012Environmentaslo, burke hales, carbon dioxide, chris langdon, co2 level, corrosive, david garrison, fluctuation, george waldbusser, larval mortality, national science foundation, netarts bay, noaa, North America, ocean acidification, ocean water, oregon, oregon state university, osu, oyster, oyster hatchery, oyster production, pacific northwest, pathogenic bacteria, richard feely, seed production, whiskey creek shellfish hatchery

*Increase in ocean acidification led to collapse of oyster seed production at Oregon hatchery*

Marine researchers have definitively linked the collapse of oyster seed production at a commercial oyster hatchery in Oregon to an increase in ocean acidification.

Larval growth at the hatchery declined to a level considered by the owners to be “non-economically viable.”

A study by the scientists found that increased seawater carbon dioxide (CO₂) levels, resulting in more corrosive ocean water, inhibited the larval oysters from developing their shells and growing at a pace that would make commercial production cost-effective. (more…)

How Pathogens Hijack Host Plants

By Guest PostNovember 27, 20101 commentSciencearabidopsis, bacteria, cell membrane, cells, diabetes, fluorescence resonance energy transfer, frank white, fret, fungi, global crop, infestation, li-qing chen, mustard, mutation, novel transporters, organism, pathogen infection, pathogenic bacteria, pathogens, plant nutrients, pore proteins, protein genes, sensor-based technology, sugar efflux, sugar-pumping mechanism, sweets

Palo Alto, CA — Infestation by bacteria and other pathogens result in global crop losses of over $500 billion annually. A research team led by the Carnegie Institution’s Department of Plant Biology developed a novel trick for identifying how pathogens hijack plant nutrients to take over the organism. They discovered a novel family of pores that transport sugar out of the plant. Bacteria and fungi hijack the pores to access the plant sugar for food. The first goal of any pathogen is to access the host’s food supply to allow them to reproduce in large numbers. This is the first time scientists have a direct handle on controlling the food supply to pathogens and thus a new means to prevent a wide range of crop diseases and losses. (more…)

Tag Archives: pathogenic bacteria

Earthquakes, Glue and Grappling Hooks: Scientists Dissect the Movement of Bacteria

Ocean Acidification Linked With Larval Oyster Failure in Hatcheries

How Pathogens Hijack Host Plants