Plants That Never Ever Bloom

Punctelia reddenda

This gorgeous foliose lichen grows in rosettes up to 6 cm in diameter. The upper surface is gray-green to yellow-green with white, punctiform (point or dot like) pseudocyphella which turn into soralia which produce granular or nodular soredia. The lower surface is black toward the center and lightens to brown near the rounded margins of the overlapping lobes. P. reddenda grows on mossy tree trunks and rock in Africa, Macaronesia, North and South America, and Europe.

images: source | source

info: source | source | source

I'll miss micro lab...

TSIA, Citrate, TSIA

Do I have like 3 other microbiology courses in my future? Yes. Will I miss this lab? Also yes, a lot. I loved this lab. My first introduction to real microbiology. The lab that made me realize I want to go into microbiology in the future. I'm happy to have taken it :)

(via Agar Art — A Cultural Triumph: See A Microbiology Masterpiece In A Petri Dish : NPR)

yep, it’s cultured & arranged bacteria!

A phase-contrast micrograph of a ciliate (Frontonia sp.) digesting blue-green algae (cyanobacteria). 

The cytostome (the “mouth” of the cell) is seen on the right side down.

image: Wiedehopf20 | Wikipedia CC

Seriously, genetics is weird.

I was reading one paper on long noncoding RNAs and there's this one part that just really stood out to me.

So to catch everyone up, genetic data is stored as DNA. Then parts of it go through a process called transcription to build a strand of RNA. Certain RNAs get translated into proteins, but there are noncoding RNAs that don't make proteins but instead do a secret second thing (and I mean secret cause there are tons of ncRNAs that no one knows what they do). long noncoding RNAs are just noticeably longer than average.

Anyway, one lncRNA mentioned in the paper is called WINCR1. When the researchers managed to block it from being used, they noted that cells lost the ability to divide and there was one particular gene GADD45B, which is responsible for triggering apoptosis, was more common in the cells.

So my guess is one of WINCR1's jobs is to just confirm to the self-destruct system that the DNA isn't broken. Like, it being transcribed essentially tells the cell that that part of the DNA is still working and it can then go and turn off the kill switch.

So I guess cells are just designed to kill themselves as their default setting and WINCR1 is the drinking bird pressing the Y key to tell the system to not just blow up.

This NPR interview with with Angela Saini about how race science never really left the global scientific consciousness is super interesting! I’m gonna read her book!

by Edward Jones on yt

"Microbial Rainbow" (detail), Tal Danino, 2018

source

i didn’t notice while i was taking this photo of some Cortinarius sp. mushrooms, but creeping up their stipes is some plasmodial slime mold !! i wish i had realised and gotten a better shot of it

A quick little note about this bacterium, Nocardia! These are fascinating to me as, although they are a rod-shaped bacteria, they can form beaded, perpendicularly branching filaments that are acid-fast. They can appear morphologically similar to a different bacteria, the anaerobic Actinomyces, however Actinomyces does not exhibit beading like Nocardia does.

This is a Gram-stain of a bacterial embolus within a pulmonary vessel of an Australian marsupial species, and we were lucky enough to know what genus we were dealing with before culture was performed, purely based on the bacteria's morphology!