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Littlest shop of horrors: Hungry green algae prefer to eat bacteria alive

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IMAGE: A brightfield image of Pyramimonas parkeae (left) and a green fluorescence image of the same algae, revealing the ingested bacteria inside the cells (right).
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Credit: N. Bock & E. Kim
New research suggests that the ability of green algae to eat bacteria is likely much more widespread than previously thought, a finding that could be crucial to environmental and climate science. The work, led by scientists at the American Museum of Natural History, Columbia University, and the University of Arizona, found that five strains of single-celled green algae consume bacteria when they are hungry, and only when those bacteria are alive. The study is published today in The ....

Yangtsho Gyaltshen , Nicholas Bock , John Burns , Eunsoo Kim , Sophie Charvet , Andrey Rozenberg , Solange Duhamel , Columbia University Lamont Doherty Earth Observatory , Columbia University , Bigelow Laboratory For Ocean Sciences , American Museum Of Natural History , Simons Foundation , Israel Institute Of Technology , University Of Arizona , Us National Science Foundation , American Museum , Natural History , Lamont Doherty Earth Observatory , Bigelow Laboratory , Israel Institute , Science Foundation , Climate Science , Ecology Environment , Marine Freshwater Biology , Molecular Biology , Climate Change ,

Global travellers vulnerable to drug-resistant bacteria - study

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International travellers are particularly vulnerable to virulent strains of drug-resistant bacteria - often picking up several different types during a trip through spending time in the company of other tourists, a new study reveals.
The global spread of intestinal multidrug resistant gram-negative (MDR-GN) bacteria poses a serious threat to human health worldwide, with MDR clones of E.coli and Klebsiella pneumoniae threatening more antibiotic resistant infections around the world.
Researchers monitored a group of European travellers visiting Lao People s Democratic Republic for three weeks - analysing daily returns of information and stool samples to build a comprehensive picture of the tourists gut health. ....

United States , Uusimaa Region , United Kingdom , Kymenlaakso Region , Eteläuomen Läi , Alan Mcnally , Tony Moran , Jukka Corander , University Of Helsinki , University Of Oxford , International Communications , University Of Birmingham , University Of Basel , Wellcome Sanger Institute , Wellcome Trust Research Unit , London School Of Hygiene , University Of Oslo , University Of Zurich , Lao People , Democratic Republic , Microbial Evolutionary Genomics , Southeast Asia , Associate Faculty , International Communications Manager , London School , Tropical Medicine ,

'Good bacteria' in breast milk changes over time

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IMAGE: Figure 1: Flower diagram representing the major bacterial groups (phyla) within the milk microbiome of Mam-Mayan Guatemalan mothers
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Credit: Emmanuel Gonzalez et al.
The cocktail of beneficial bacteria passed from mother to infant through breast milk changes significantly over time and could act like a daily booster shot for infant immunity and metabolism. The research, conducted by scientists from Montreal and Guatemala and published in
Frontiers in Microbiology, has important implications for infant development and health.
Researchers discovered a range of microbiome species never before identified in human milk. Until now, relatively little was known about the role microbiome bacteria play in breast milk. These bacteria are thought to protect the infant gastrointestinal tract and improve aspects of long-term health, such as allergy prevention. ....

United States , Emmanuel Gonzalez , Agellon Luis , Kristine Koski , Scott Marilyn , Gonzalez Emmanuel , Brereton Nicholas , Lopez Leyva Lilian , Koski Kristine , Solomons Noel , Li Chen , World Health Organization , School Of Human Nutrition At Mcgill , Mcgill University , University Of Montreal , International Space , Western Highlands , North America , Associate Professor , Human Nutrition , Changes Occur , Human Breast Milk Microbiome Between Early , Established Lactation , Breastfeeding Guatemalan , Nutrition Nutrients , Medicine Health ,

Can bacteria make stronger cars, airplanes and armor?

Biological systems can harness their living cells for growth and regeneration, but engineering systems cannot. Until now.Researchers are harnessing living bacteria to create engineering materials that are strong, tolerant, and resilient. ....

United States , Yipin Su , Lizhi Sun , Kunhao Yu , Zhangzhengrong Feng , Kyung Hoon Lee , Qiming Wang , Shengwei Feng , Minliang Yan , University Of California , Viterbi School Of Engineering , Sonny Astani Department Of Civil , Stephen Schrank Early Career Chair , Environmental Engineering , Sonny Astani Department , Kyung Hoon , Chemistry Physics Materials Sciences , Technology Engineering Computer Science , ஒன்றுபட்டது மாநிலங்களில் , கியுங் ஹூன் லீ , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , விட்டர்பி பள்ளி ஆஃப் பொறியியல் , சுற்றுச்சூழல் பொறியியல் , கியுங் ஹூன் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் , உயிர் வேதியியல் ,

Release of nutrients from lake-bottom sediments worsens Lake Erie's annual 'dead zone,'

Robotic laboratories on the bottom of Lake Erie have revealed that the muddy sediments there release nearly as much of the nutrient phosphorus into the surrounding waters as enters the lake s central basin each year from rivers and their tributaries.
Excessive phosphorus, largely from agricultural sources, contributes to the annual summer cyanobacteria bloom that plagues Lake Erie s western basin and the central basin s annual dead zone, an oxygen-starved region that blankets several thousand square miles of lake bottom and that reduces habitat for fish and other organisms.
The release of phosphorus from Lake Erie sediments during periods of low oxygen a phenomenon known as self-fertilization or internal loading has been acknowledged since the 1970s. But the new University of Michigan-led study marks the first time the process has been monitored step by step for an entire season using lake-bottom sensors. ....

Great Lakes , United States , Lake Erie , Canada General , Thomas Johengen , Hanna Anderson , Heidi Purcell , Steve Ruberg , Lacey Mason , Casey Godwin , Peter Alsip , School For Environment , Atmospheric Administration Great Lakes Environmental Research Laboratory , University Of Michigan , Institute For Great Lakes Research , National Oceanic , Environmental Science Technology Water , Great Lakes National Program Office , Great Lakes Environmental Research Laboratory , Environmental Science , Technology Water , Cooperative Institute , Great Lakes Research , Atmospheric Administration , Great Lakes Environmental Research , Seabird Scientific ,