Matters Microbial

40 Episodes
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By: Mark O. Martin

Matters Microbial is a podcast about the wonders of microbiology, microbiologists, and microbial centrism with Dr. Mark Martin

What's the Buzz on Phage Therapy for Honeybees?
#100
Today at 4:01 AM

Matters Microbial #100: What’s the Buzz on Phage Therapy for Honeybees? July 14, 2025

Today, Dr. Heather Hendrickson from the University of Canterbury in New Zealand joins the #QualityQuorum to discuss the research she and her team are conducting on bacteriophage therapy to protect vulnerable honeybees from bacterial infections.

Host: Mark O. Martin

Guest: Heather Hendrickson

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Links for this episode Here is the website for a former undergraduate research student of mine, Dr. Paula Welander, now a professor and administrator at Stanford Universit...


Albert Kluyver—Microbial Unity and Diversity in Metabolism
#99
07/10/2025

Matters Microbial #99: Albert Kluyver—Microbial Unity and Diversity in Metabolism

July 10, 2025

Today, Dr. Dianne Newman of Caltech joins the #QualityQuorum live at ASM Microbe in Los Angeles, to discuss the role that Albert Kluvyer played in helping microbial scientists to understand the unity and diversity to be found in microbial metabolism.

Host: Mark O. Martin

Guest: Dianne Newman

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A review article by Roberto Kolter about the history of microbiology. An overview of the “Delft S...


Nesting Dolls of Endosymbiosis
#98
07/04/2025

Matters Microbial #98: Nesting Dolls of Endosymbiosis July 3, 2025

Today, Dr. John McCutcheon of Arizona State University joins the #QualityQuorum to discuss the work he and his research group do to investigate the strategies by which microbes become symbionts of other cells. After all, the mitochondria and chloroplasts of eukaryotic cells, including yours, were once bacteria!

Host: Mark O. Martin

Guest: John McCutcheon

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Links for this episode A video about the symbiosis of Hydra virdissima, which captured my heart when I was young. ...


Microbes in the Air (Way)
#97
06/27/2025

Matters Microbial #97: Microbes in the Air (Way)

June 27, 2025

Today, Dr. Ari Kozik, Assistant Professor at the University of MIchigan joins the #QualityQuorum to discuss the work she and her research group do to investigate microbes living within the lung and their relationship to health as well as microbiology outreach and representation.

Host: Mark O. Martin

Guest: Ari Kozik

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A wonderful discussion of airway microbes. A thought provoking article about microbes in our breath! G...


Molecular Microbiology in High Schools
#96
06/20/2025

Matters Microbial #96: Molecular Microbiology in High Schools

June 19, 2025

Today, Bob Kuhn, biotechnology teacher at the Fulton County Schools Innovation Academy STEM high school in Alpharetta, Georgia joins the #QualityQuorum to discuss his strategies for teaching molecular microbiology skills and concepts to high school students — and why that matters.

Host: Mark O. Martin

Guest: Bob Kuhn

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An article on Mr. Kuhn’s original microbiological interest:  salt marsh foraminifera. Another interest:  a video of the beautiful or...


Bacteria and Aphids — A Symbiotic Story
#95
06/13/2025

Matters Microbial #95: Bacteria and Aphids — A Symbiotic Story

June 12, 2025

Today, Dr. Tory Hendry, Associate Professor of Microbiology at Cornell University, joins the #QualityQuorum to tell us about the relationship between plant munching aphids and fluorescent Pseudomonas . . . and why we should care.

Host: Mark O. Martin

Guests: Tory Hendry

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An overview of siderophores in microorganisms. An essay about aphid life cycle and characteristics. An article describing parthenogenesis in aphids. An essay describing aphids and color vision...


One Health and Microbiomes Everywhere
#94
06/06/2025

Matters Microbial #94: One Health and Microbiomes Everywhere

June 5, 2025

Today, Dr. Seth Bordenstein and Dr. Nichole Ginnan of Pennsylvania State University join the #QualityQuorum to tell us about their new publication linking One Health to the myriad microbiomes that exist all around us through the lens of the holobiome—and an opportunity to see the world in a different fashion.

Host: Mark O. Martin

Guests: Seth Bordenstein and Nichole Ginnan

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Michele Banks microbially themed ar...


Preventing Antibiotic Resistance
#93
05/29/2025

Matters Microbial #93: Preventing Antibiotic Resistance

May 29, 2025

Today’s episode was an in-person podcast at the University of Texas Austin!  Dr. Despoina Mavridou, Assistant Professor of Molecular Biosciences, joins the #QualityQuorum to discuss how her research group improves antibiotic effectiveness by impeding protein folding, and why this matters in the fight against antimicrobial resistance.

Host: Mark O. Martin

Guest: Despoina Mavridou

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Here is a link to a wonderful video of the #LuxArt by UT-Austin...


Microbial Metabolism in Extreme Places
#92
05/22/2025

Matters Microbial #92: Microbial Metabolism in Extreme Places May 22, 2025

Today, Dr. Valerie DeAnda Torres, Assistant Professor of Microbiology and Cell Science at the University of Florida (and National Geographic Explorer), joins the #QualityQuorum to tell us about the research her team does, studying the evolution of metabolic pathways in extreme environments . . . and why these are important to geochemical cycling.

Host: Mark O. Martin

Guest: Valerie DeAnda Torres

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Links for this episode The Etsy vendor making the beautiful microbial pins I have mentione...


You Are What Your Genes Feed Your Microbiome
#91
05/16/2025

Matters Microbial #91: You Are What Your Genes Feed Your Microbiome May 16, 2025

Today, Dr. Emily Davenport, Assistant Professor in the Department of Biology and Huck Institutes of the Life Sciences at Penn State University, joins the #QualityQuorum to tell us about the research her team does, studying how our own genes impact our microbiomes.

 

Host: Mark O. Martin

Guest: Emily Davenport

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Links for this episode A description of GWAS (“Genome Wide Association Study”).  Here is an introductory video about the concept. An explainer on...


Using Soil Microbiomes in Sustainable Agriculture
#90
05/08/2025

Matters Microbial #90: Using Soil Microbiomes in Sustainable Agriculture May 8, 2025

Today, Dr. Francisco Dini Andreote, Assistant Professor of Phytobiomes at Penn State, joins the #QualityQuorum to tell us about the microbiome of plants and the soil, and how understanding that relationship can improve agriculture.

Host: Mark O. Martin

Guest: Francisco Dini Andreote

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Links for this episode An overview of the Type 6 Secretory System of bacteria—almost like a microbial switchblade knife. A wonderful video of the T6SS made by a student in...


Can AI Point Us to New Antibiotics
#89
05/01/2025

Matters Microbial #89: Can AI Point Us to New Antibiotics

May 1, 2025

Today, Dr. Amir Mitchell, Associate Professor of Systems Biology at the University of Massachusetts Medical School, joins the #QualityQuorum to discuss using artificial intelligence to develop new and effective antibiotics in our endless battle against drug-resistant microbes.

Host: Mark O. Martin

Guest: Amir MItchell

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An article exploring the impact of the microbiome on drug effectiveness. A blog post discussing the relationship between the gut m...


Microbial Interactions in Cystic Fibrosis
#88
04/24/2025

Matters Microbial #88: Microbial Interactions in Cystic Fibrosis

April 24, 2025

Today, Dr. Reed Stubbendieck, Assistant Professor of Microbiology & Molecular Genetics at Oklahoma State University joins the #QualityQuorum to discuss how microbes and the host communicate with one another in the cystic fibrosis lung.

Host: Mark O. Martin

Guest: Reed Stubbendieck

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An overview of cystic fibrosis as a disease with a genetic link. A review of the microbiome of the cystic fibrosis lung. An overview of biofilms...


Dietary Protein and the Microbiome
#87
04/17/2025

Matters Microbial #87: Dietary Protein and the Microbiome

April 17, 2025

Today, Dr. Manuel Kleiner, Associate Professor of Microbiomes and Complex Microbial Communities at North Carolina State University,  joins the #QualityQuorum to discuss how diet can influence the microbiome in fascinating ways.

Host: Mark O. Martin

Guest: Manuel Kleiner

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An overview of “pink pigmented facultative methylotrophs,” which can lead to wonderful “leaf prints.” Gnotobiotic versus “germ-free” animals. A solid review of the gut microbiome and the relationship to hea...


Intraterrestrials — the Strangest Life on, and in, the Earth
#86
04/10/2025

Matters Microbial #86: Intraterrestrials — the Strangest Life on, and in, the Earth April 10, 2025

Today, Dr. Karen Lloyd, Professor of Earth Science at the University of Southern California,  joins the #QualityQuorum to discuss her upcoming book Intraterrestrials (Princeton University Press). Dr. Lloyd will describe the 25 year journey she and her coworkers have had exploring microbial life deep underground, and even less likely places.

Host: Mark O. Martin

Guest: Karen Lloyd

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Links for this episode The upcoming book, Intraterrestrials, by Dr. Lloyd. Definition of the term...


The Microbiomes of Hawai’ian Seascapes
#85
04/03/2025

Matters Microbial #85: The Microbiomes of Hawai’ian Seascapes April 3, 2025

Today, Dr. Rosie ’Anolani Alegado of the University of Hawai’i at Mānoa  joins the #QualityQuorum to discuss how weather, climate, and human intervention impact the microbiota to be found in human related seascapes around Hawai’i.

Host: Mark O. Martin

Guest: Rosie ’Anolani Alegado

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Links for this episode An overview of how Hawai’i was settled from Polynesia. An essay describing indigenous Hawai’ian culture and its collaborative relationship to the land and sea. A mu...


Detecting Pathogens — and Worse — in Wastewater
#84
03/27/2025

Matters Microbial #84: Detecting Pathogens — and Worse — in Wastewater

March 27, 2025

Today, Dr. Rachel Poretsky, Associate Professor of Biological Sciences at the University of Illinois Chicago joins the #QualityQuorum to discuss how examining wastewater (and related water) can give insights into the presence of pathogen antimicrobial resistance genes and even microbial ecology.

Host: Mark O. Martin

Guest: Rachel Poretsky

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A link to demonstrate the wonders of the Marine Biological Laboratories’ Microbial Diversity course, which I know for a...


Helicobacter — Passing the Acid Test
#83
03/20/2025

Matters Microbial #83: Helicobacter — Passing the Acid Test

March 19, 2025

Today, Dr. Karen Ottemann, Professor and Chair of the Department of Microbiology and Environmental Toxicology at the University of California Santa Cruz joins the #QualityQuorum to discuss the fascinating strategies of Helicobacter pylori, which can cause gastric ulcers and even stomach cancer in people.

Host: Mark O. Martin

Guest: Karen Ottemann

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An overview of Helicobacter pylori and its relationship to gastric ulcers and gastric cancer. A vi...


Melanin, Fungi, and Global Warming
#82
03/13/2025

Matters Microbial #82: Melanin, Fungi, and Global Warming March 13, 2025

Today, the impressive Dr. Arturo Casadevall of Johns Hopkins University returns to the podcast to discuss how fungal disease is a looming threat on our warming planet, and how these organisms can use pigmentation to adapt to human-associated environments . . . and increase their chances of causing disease.

Host: Mark O. Martin

Guest: Arturo Casadevall

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Links for this episode A video overview of the understudied world of fungi. A CDC overview of fungal diseases. A hopeful...


Viruses, Innate Immunity, and Undergraduates
#81
03/06/2025

Matters Microbial #81: Viruses, Innate Immunity, and Undergraduates

March 5, 2025

Today, Dr. Brianne Barker, Associate Professor of the Biology Department at Drew University, joins the #QualityQuorum to discuss how her undergraduate research group studies how innate immune mechanisms of cells recognize viral invasion.

Host: Mark O. Martin

Guest: Brianne Barker

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A video describing the immune system, both innate and adaptive. More of a focus on mechanisms of innate immunity, the focus for today. A descripti...


Do Microbes Make the Best Chemists?
#80
02/27/2025

Matters Microbial #80: Do Microbes Make the Best Chemists?

February 27, 2025

Today, Dr. Marc Chevrette, Assistant Professor of Microbiology and Cell Science at the University of Florida, joins the #QualityQuorum to discuss how his research group can study novel metabolites and even interactions via study of microbial genomes! Dr. Chevrette reminds us all that microbes are the best chemists!

Host: Mark O. Martin

Guest: Marc Chevrette

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 An overview of how quickly the field of microbia...


Matters Microbial #79: How Amoebae Beat the Heat
#79
02/20/2025

Matters Microbial #79: How Amoebae Beat the Heat

February 20, 2025

Today, Dr. Angela Oliverio, Assistant Professor in the Biology Department at Syracuse University, joins the #QualityQuorum to discuss what her research group has been learning about extremophilic single-celled eukaryotes!

Host: Mark O. Martin

Guest: Angela Oliverio

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An overview of protists.   A wondrous video of the types of protists to be found seemingly everywhere. A video about amoebae and how YOU can find them.   A video about the...


Matters Microbial #78: An EXTREME Close Up of the Squid-Vibrio Symbiosis
#78
02/13/2025

Matters Microbial #78: An EXTREME Close Up of the Squid-Vibrio Symbiosis

February 13, 2025

Today, Dr Ariane Briegel, Professor and head of the Integrative Structural Cell Biology research unit at the Institut Pasteur in Paris, France, joins the #QualityQuorum to discuss some of the exciting findings of her research group studying how bacteria and the ever-popular Hawaiian bobtail squid work together at a  molecular level—using cutting-edge cryo-electron  tomography!

Host: Mark O. Martin

Guest: Ariane Briegel

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The...


Matters Microbial #77: It’s a Germ-Eat-Germ World!
#77
02/06/2025

Matters Microbial #77: It’s a Germ-Eat-Germ World!

February 6, 2025

Today, Dr Laura Williams, Director of Undergraduate Research at Georgia Institute of Technology, joins the #QualityQuorum to discuss some of the exciting work she did as an associate professor at Providence College with undergraduate students studying predatory bacteria and why we should care about this fascinating topic!

Host: Mark O. Martin

Guest: Laura Williams

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A quite ancient review article describing the different classes of predatory...


Marvelous Multicellular Magnetotactic Microbes!
#76
01/30/2025

Matters Microbial #76:  Marvelous Multicellular Magnetotactic Microbes! January 29, 2025

Today, Dr. George Schaible, Postdoctoral Scholar at the University of California, Santa Barbara, joins the #QualityQuorum to discuss the exciting work he did during his PhD to unravel a fascinating topic:  multicellular magnetotactic microbes!

 

Host: Mark O. Martin

Guest: George Schaible

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Links for this episode What is a postdoctoral scholar in microbiology?  A previous #MattersMicrobial podcast about giant bacteria from Dr. Esther Angert.   A previous #MattersMicrobial podcast about magnetotactic bacteria from Dr. Arash Komeili. A previou...


Do Gut Microbes Watch their Carbs?
#75
01/23/2025

Matters Microbial #75: Do Gut Microbes Watch their Carbs?  

January 22, 2025

Today, Dr. Darrell Cockburn, Associate Professor of Food Science at Penn State, joins the #QualityQuorum to discuss the work his research group has done exploring how starches and other polysaccharides are used by the gut microbiome. 

Host: Mark O. Martin

Guest: Darrell Cockburn

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An overview of dietary fiber in the diet. A primer on the structure of starch and cellulose. An overview on starch granules...


Podcasting to Combat Microbial Misinformation
#74
01/16/2025

Matters Microbial #74: Podcasting to Combat Microbial Misinformation

January 16, 2025

Today, Dr. Jessica Coates of the Biology Department at Spelman College joins the #QualityQuorum to discuss her work combating microbial misinformation in the classroom and to share her journey to the microbial sciences.  

Host: Mark O. Martin

Guest: Jessica Coates

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A short talk I gave at ASM some time ago about Louis Pasteur and the term “germ.” An organization devoted to promoting microbial literacy. An example of u...


Matters Microbial #73: Seeing the Microbiome
#73
01/09/2025

Matters Microbial #73: Seeing the Microbiome

January 8, 2025

Today, Dr. Travis Wiles, Assistant Professor of Molecular Biology and Biochemistry at the University of California, Irvine, joins the #QualityQuorum to discuss the work he and his research group have done to visualize the changing dynamics of the gut microbiome—including bacteriophages residing there. 

Host: Mark O. Martin

Guest: Travis Wiles

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Dr Anne Estes’ academic website is found here, along with her blog, and her social media link o...


Who is in Your Water?
#72
01/02/2025

Matters Microbial #72: Who is in Your Water?

January 2, 2025

Today, Dr. Ameet Pinto, Carlton S. Wilder Associate Professor in Civil and Environmental Engineering at the Georgia Institute of Technology, joins the #QualityQuorum to discuss the microbiome of drinking water and how it can be used to optimize safety and health. 

Host: Mark O. Martin

Guest: Ameet Pinto

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A short review of a famous article by Dr. Norman Pace about the microbiome of showers and how mi...


Disinfecting the Built Environment
#71
12/26/2024

Matters Microbial #71: Disinfecting the Built Environment

December 25, 2024

Ever wonder what’s growing on your toothbrush? Today, Dr. Erica Hartmann, Associate Professor of Civil and Environmental Engineering at Northwestern University, joins the #QualityQuorum to discuss how antimicrobial resistance can occur in the built environment we see all around us every day—and why it is vital to learn more about this association.

Host: Mark O. Martin

Guest: Erica Hartmann

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An essay on the Hygiene Hyp...


Food Safety and Antibiotic Resistance
#70
12/19/2024

Matters Microbial #70: Food Safety and Antibiotic Resistance

December 18, 2024

Today, Dr. Dr. Erika Ganda, Assistant Professor of Food Animal Microbiomes in the Department of Animal Science at Pennsylvania State University, joins the #QualityQuorum to discuss the varied interests of her research team studying the intersection of animal husbandry, microbiome studies, and the threat of antimicrobial resistance.

Host: Mark O. Martin

Guest: Erika Ganda

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A video that Dr. Quinn and yours truly did for an even...


Can Eating Microbes Make You Healthy?
#69
12/12/2024

Matters Microbial #69: Can Eating Microbes Make You Healthy?

December 11, 2024

Today, Dr. Maria Marco, Professor of Food Science and Technology at the University of California Davis, joins the #QualityQuorum to discuss microorganisms in food, intestinal ecosystems, and the role that lactic acid bacteria can play in health and well-being.

Host: Mark O. Martin

Guest: Maria Marco

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An overview of food science microbiology as a career. An article on the microbial ecology of sauerkraut. An articl...


Social Evolution in Viruses
#68
12/05/2024

Matters Microbial #68: Social Evolution in Viruses

December 4, 2024

Today, Dr. Sam Díaz-Muñoz, Assistant Professor of Microbiology and Molecular Genetics, as well as a Faculty Member of the Genome Center at the University of California Davis, joins the #QualityQuorum to discuss how their group, and a growing community of researchers, investigates the social lives of viruses: the many ways that viruses interact and the ways that interactions shape infections and viral evolution.  

Host: Mark O. Martin

Guest: Sam Díaz-Muñoz

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Chemical Communication in Microbe Symbioses
#67
11/28/2024

Matters Microbial #67: Chemical Communication in Microbe Symbioses

November 27, 2024

Today, Dr. Marcy Balunas, Associate Professor of Microbiology and Immunology, as well as part of the Department of Medicinal Chemistry at the University of Michigan, joins the #QualityQuorum to discuss how her group investigates the chemical signals—the language—between host and microbe symbioses.

Host: Mark O. Martin

Guest: Marcy Balunas

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An article on bacterial colonial variation during domestication, by Dr. Roberto Kolter and colleagues...


Digesting the Science of Fermented Foods
#66
11/21/2024

Matters Microbial #66: Digesting the Science of Fermented Foods

November 20, 2024

Today, Dr. Ben Wolfe, Associate Professor of Biology at Tufts University, joins the #QualityQuorum to discuss how he and his collaborators study novel food fermentations, helping the public understand more about the gut microbiome, and outreach projects involving microbially-associated food.

Host: Mark O. Martin

Guest: Benjamin Wolfe

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An overview for beginning Micronauts on microbial fermentation. A more advanced overview of microbial fermentation. A book and w...


Squishy Tissues and Hints from Archaea
#65
11/14/2024

Today, Dr. Alex Bisson, Assistant Professor of Biology at Brandeis University, joins the #QualityQuorum to discuss how he and his collaborators use a variety of tools to study the mechanobiology of archaea (such as how some respond to being “squished”), and how those studies can shed light on the evolution of complex eukaryotes like humans.

Host: Mark O. Martin

Guest: Alex Bisson

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An overview of one of the archaea used by Dr. Bisson’s research team...


Making Sense of the Microbiome
#64
11/07/2024

Today, Dr. Patrick Schloss, Professor in the Department of Microbiology and Immunology in the School of Medicine at the University of Michigan, joins the #QualityQuorum to discuss how the human microbiome is studied, possible pitfalls in such data analysis, and what tools he and his coworkers have developed to lead toward repeatable, hypothesis-driven science.

Host: Mark O. Martin

Guest: Patrick Schloss

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An overview of how the gut microbiome is analyzed. One of the articles discussed...


A Symphony of Cyanobacteria
#63
10/31/2024

Matters Microbial #63: A Symphony of Cyanobacteria October 30, 2024

Today, Dr. Nathan Algren, Associate Professor of Biology at Clark University, joins the #QualityQuorum to discuss the centrality of cyanobacteria to our biosphere, the viruses that prey upon them, and his interests in outreach and science-oriented art.

Host: Mark O. Martin

Guest: Nathan Ahlgren

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Links for this episode An overview of the cyanobacteria. An overview of Prochlorococcus. An overview of marine bacteriophages. The Great Oxidation Event Cyanobacteria are thought to have radically changed our planet 2.5...


Matters Microbial #62: Should I Stay, or Should I Go—How Bacteriophage are Released from Host Cells
#62
10/24/2024

Matters Microbial #62: Should I Stay, or Should I Go—How Bacteriophage are Released from Host Cells

October 23, 2024

Today, Dr. Jolene Ramsey, of the Biology Department of Texas A&M University and Affiliate of the Center for Phage Technology, joins the #QualityQuorum to discuss how bacteriophages release themselves from host cells, her efforts to teach students to work with the primary literature, and her own path to the microbial sciences.

 

Host: Mark O. Martin

Guest: Jolene Ramsey

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All In Due Time–How Bacteria Wake from Dormancy
#61
10/17/2024

Matters Microbial #61: All In Due Time–How Bacteria Wake from Dormancy

October 17, 2024

Today, Dr. Paul Carini, of the Environmental Science department of the University of Arizona, joins the #QualityQuorum to discuss how soil bacteria can become dormant, “wake up,” and why that is more relevant than you might suppose.

Host: Mark O. Martin

Guest: Paul Carini

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A lovely essay about the “Cultivation Conundrum”:  why so many microbes in nature cannot be grown in the laboratory...