Okay, despite going into a biology related field, I only just learned about slime molds, and hang on, because it gets WILD.
This guy in the picture is called Physarum polycephalum, one of the more commonly studied types of slime mold. It was originally thought to be a fungus, though we now know it to actually be a type of protist (a sort of catch-all group for any eukaryotic organism that isn't a plant, animal, or a fungus). As protists go, it's pretty smart. It is very good at finding the most efficient way to get to a food source, or multiple food sources. In fact, placing a slime mold on a map with food sources at all of the major cities can give a pretty good idea of an efficient transportation system. Here is a slime mold growing over a map of Tokyo compared to the actual Tokyo railway system:
Pretty good, right? Though they don't have eyes, ears, or noses, the slime molds are able to sense objects at a distance kind of like a spider using tiny differences in tension and vibrations to sense a fly caught in its web. Instead of a spiderweb, though, this organism relies on proteins called TRP channels. The slime mold can then make decisions about where it wants to grow. In one experiment, a slime mold was put in a petri dish with one glass disk on one side and 3 glass disks on the other side. Even though the disks weren't a food source, the slime mold chose to grow towards and investigate the side with 3 disks over 70% of the time.
Even more impressive is that these organisms have some sense of time. If you blow cold air on them every hour on the hour, they'll start to shrink away in anticipation when before the air hits after only 3 hours.
Now, I hear you say, this is cool and all, but like, I can do all those things too. The slime mold isn't special...
To which I would like to point out that you have a significant advantage over the slime mold, seeing as you have a brain.
Yeah, these protists can accomplish all of the things I just talked about, and they just... don't have any sort of neural architecture whatsoever? They don't even have brain cells, let alone the structures that should allow them to process sensory information and make decisions because of it. Nothing that should give them a sense of time. Scientists literally have no idea how this thing is able to "think'. But however it does, it is sure to be a form of cognition that is completely and utterly different from anything that we're familiar with.
What advice would you give to someone who is going into microbiology ? Love your blog 😺
thank you! 🫶🏻
for someone going into microbiology, i’d definitely recommend putting effort into your chemistry courses, especially if they’re not your strong suit (i’m not very good at chemistry)
also, take any lab experiences that you can get, even if they’re not micro! any time that you can get into the lab and get your hands dirty (metaphorically speaking) will help you develop your skills!
hello hellsitegenetics. do u know how to stop wanting to eat electrophoresis gel
the craving never stops you just have to get good at eating it when the lab supervisors arent looking
Question from one of my Mycograsshoppers on Patreon: “what types of potential pests might be attracted to the [mushroom] spores?”
My answer: “Good question mycograsshopper! Primarily fungal gnats :) thats my biggest concern. Technically mites, but thats less common, and also technically, I believe, a few choice flies and some beetles could be attracted if you kept your research area wide open to the outside long enough!!! Any creature that youd consider a pest for your mushrooms is termed “fungivore” and includes mycelium, spore, and fruit body-hunting pests💯”
A foto I took during my histology classes of a mouse's bones, muscles, skin, cartilage, and connective tissue.
This shit is gorgeous.
hi- quick question since I know you're someone who's written several papers- Do you know if you/other people who have written scientific papers are okay with emails about questions about those papers?
I'm someone who studies hyenas- amateurishly -and papers about extinct species of hyenas are really interesting to me but I can't exactly digest them very well because I don't understand the words being used. Like, what in heavens names is a 'metaconid' what does this mean!!!!!
In general authors are happy to receive such questions, but might not have enough time to give you the answer you are looking for. Still, always worth reaching out.
A metaconid is a part of a molar. But I understand this is just an example among of the general issue you are trying to illustrate. What I have learned from years of reading unfamiliar jargon, and listening to podcasts like The Tetrapod Zoology Podcast that use jargon with reckless abandon, is that in general either (a) the words that are encoded in jargon aren't *that* important to understand the grand themes of what is being discussed, or (b) their meaning can be deduced based on context cues. When I come across one that is key but really cannot be deduced, I will google it, and often Wiktionary or similar will have an answer.
The more you read, the more familiar you will get with the jargon, and the less you will need to google or ask. So, I encourage you to read broadly, and chase those interests!
orange slime mold plasmodium by Jerry Yap, Malaysia
Filoboletus manipularis is found in south-east Asia, Australia and other parts of the world. No one would guess that these seemingly ordinary mushrooms glow at night like magical toadstools in a fairy wonderland.
Photographer Callie Chee
the purple brittlegill (also blackish-purple russula) is a mycorrhizal fungus in the family russulaceae. it grows with both coniferous & deciduous trees !! it has been recorded in europe, asia & eastern north america. :-)
the big question : can i bite it?? yes, though it's not particularly recommended. it is said to taste.. hot?
r. atropurpurea description :
"the cap is 4–10 cm (1.5–4 in) in diameter. it is dark reddish purple, with a dark; sometimes almost black centre. at first it is convex, but later flattens, & often has a shallow depression. it can also be lighter in colour, or mottled yellowish. the stem is firm, white, & turns grey with age. it measures 3–6 cm in length & 1–2 cm in diameter. the closely set and fairly broad gills are adnexed to almost free, & pale cream, giving a spore print of the same colour."
[images : source & source] [fungus description : source]