tooth-cross-sectionThe TWiM team reveals the oldest human plague from 4,900 years ago in Sweden, and engineering E. coli to become an endosymbiont in yeast, modeling the evolution of mitochondria.

Hosts: Vincent RacanielloMichael SchmidtElio Schaechterand Michele Swanson

Right click to download TWiM#191 (30 MB .mp3, 62 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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exosomesThe TWiM-opods consider two stories about exosomes, vesicles that are shed from cells: those that eliminate airway pathogens, and those from the plants we eat that shape our gut microbiome.

Hosts: Vincent RacanielloMichael Schmidtand Michele Swanson

Right click to download TWiM#190 (35 MB .mp3, 71 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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worlds fungiThe TWiM team considers the state of the world’s fungi as revealed by a report from the Kew Royal Botanical Gardens, and how Salmonella loses motility to evade host defenses.

Hosts: Vincent RacanielloMichael SchmidtElio Schaechter, and Michele Swanson

Right click to download TWiM#189 (35 MB .mp3, 71 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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dna-rnaThe TWiM rock stars show how to modify gram-positive antibiotics so they can kill gram-negative cells, and bacteria that have both DNA and RNA in their genome.

Hosts: Vincent Racaniello and Michael Schmidt

Right click to download TWiM#188 (39 MB .mp3, 81 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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HoneybeesThe TWiM people reveal that phages must cooperate to overcome CRISPR-Cas defenses, and the effect of the herbicide glyphosate on the gut microbiome of honey bees.

Hosts: Vincent Racaniello, Elio SchaechterMichael Schmidt, and Michele Swanson

Right click to download TWiM#187 (32 MB .mp3, 66 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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Gigantopelta chessoiaThe TWiM team describe the involvement of a microbiome in snail metamorphosis, and using Listeria to kill tumors.

Hosts: Vincent RacanielloMichael Schmidt, and Michele Swanson

Right click to download TWiM#186 (35 MB .mp3, 73 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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moaThe TWiM team considers the increasing tolerance of Enterococcus to handwash alcohols, and how the study of DNA in ancient dung reveals the diet and parasite burden of extinct New Zealand birds.

Hosts: Vincent RacanielloMichael SchmidtElio Schaechter and Michele Swanson

Right click to download TWiM#185 (33 MB .mp3, 68 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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Sam SternbergSam Sternberg discusses his work on exploring and exploiting CRISPR-Cas immune systems, beginning as a graduate student with Jennifer Doudna, at a biotech start-up, and in his laboratory at Columbia University.

Host: Vincent Racaniello

Guest: Sam Sternberg

Right click to download TWiM#184 (42 MB .mp3, 86 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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C. destructansThe TWiMpeeps discuss two symbioses: a parasitoid bacterium of a heterotrophic protist, and fungal parasites in cicadas.

Hosts: Vincent RacanielloMichael SchmidtElio Schaechter and Michele Swanson

Right click to download TWiM#183 (28 MB .mp3, 57 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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Phaeodactylum tricornutum

Diatom Phaeodactylum tricornutum

The TWiM hosts reveal how to test antimicrobial susceptibility in less than 30 minutes, and a carbonate-sensitive phytotransferrin in diatoms that controls iron uptake.

Hosts: Vincent RacanielloMichael SchmidtElio Schaechter and Michele Swanson

Right click to download TWiM#182 (32 MB .mp3, 66 minutes)

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Links for this episode

Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to twim@microbe.tv