Small Things Considered

Making Mycorrhrizae. A Snippet.

by Elio | Very high on the list of this world's vital sym­bio­ses are the my­cor­rhi­zae, the as­so­ci­a­tion of fun­gal fi­la­ments with plant root­lets. About 90% of all vas­cu­lar plants (from ferns on up) pos­sess them. They con­tri­bute great­ly to the health of the plants, being a ma­jor source of ni­tro­gen, salts, and water... Read more →

Who runs the world?

by Sumedha Ravishankar and Ian Robbins | Microbes facilitate untold biological processes, from digestion in the tiny gut of an insect to running our planet’s biogeochemical cycles. These microscopic beings truly are the quiet puppeteers of our lives. And it makes sense that they would be, since unicellular life has been on Earth for about 3.5 billion years, Read more →

The Complex Anatomy and Physiology of the Gut of Wood-feeding Beetles. A Snippet.

by Elio | The digestive system of animals can be wondrously complex. Think of our own, which consists of such diverse organs as the mouth, the esophagus, stomach, the small and large intestines, and the anus. Each one is responsible for a particular set of functions. Is such a division of labor also seen in "simpler" animals? This question was asked recently of wood-feeding beetles by a group of no less than 18 investigators from all over the US. Read more →

Another Cell Bites the Dust

by Janie | Almost a century ago, Walther Goebl and Oswald Avery observed that Streptococcus pneumoniae cells lysed upon entering stationary phase, but the mechanism behind this autolysis remained elusive. Read more →

Talmudic Question #167

What is a microbe? (Defend your definition.)
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...et respice finem (3' –OH)

by Christoph | Worry not, this is no lengthy con­tem­pla­tion on the use of clas­si­cal La­tin in sci­en­ti­fic lang­uage. It's a not-so-short piece to em­pha­size that it makes sense to mark the ends of non-bran­ched poly­mers like DNA and RNA, and there­by de­fine their che­mi­cal di­rec­tio­na­li­ty. Bio­in­for­ma­ti­cians who rou­tine­ly work with DNA and RNA in fasta... Read more →

«let not Vanity ſeduce you...»

by Christoph | «let not Vanity ſeduce you to per­ſiſt in your Miſ­take». No, it's not a spel­ling mis­take that you see here. It's the 'long ſ', which was used in print well into the 18th cen­tu­ry. And also the ca­pi­ta­li­za­tion of nouns, un­usual to­day, was com­mon in 1743 when Hen­ry Ba­ker's trea­tise The Mi­cro­sco­pe Made Ea­sy was pub­lished... Read more →

Are all stresses oxidative stresses?

by J. Jeffrey Morris | I have a confes­sion to make. I get stres­sed. A lot. I think I've spent the bet­ter part of the last three years with the va­gue feel­ing I'm for­get­ting some­thing real­ly im­por­tant. I bet there are a few people in the rea­ding au­di­ence that can sym­pa­thize – it seems to be a pret­ty com­mon ex­pe­ri­ence for as­sis­tant pro­fes­sors. The stres­sors come... Read more →

TWiM #200: In the company of Elio

Vincent, Michele, and Michael travel to San Diego to reminisce with Elio about his career, his work in microbiology, and his love for microbes and mushrooms. Read more →

Of Terms in Biology: Trophosome

by Elio | A rather specific term, trophosome refers – as per the Wikipedia – to 'an organ found in some animals that houses symbiotic bacteria that provide food for their host.' Trophé (τροφή) denotes nourishment, soma (σῶμα), body, denoting that trophosomes are intimately involved in their host's nutrition. Read more →