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cover of episode Why does mold have different colors?

Why does mold have different colors?

2025/2/10
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Moment of Um

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Eunice the Unicorn
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Jonathan Schilling
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Jonathan Schilling: 作为一名生物科学学院的教授,我认为霉菌种类繁多且颜色各异,在某种程度上,它们是相当美观的。真菌与植物相比,和我们人类的相似度更高。真菌是一个独立的生物界,其中既包括用于制作面包的酵母,也包括可以生长并食用的丝状真菌。丝状真菌专注于快速生长并产生大量孢子,以便在有利的环境中迅速繁殖并扩散到其他地方。这些孢子具有特定的颜色,例如绿色、棕色、黑色,偶尔也会出现粉色和黄色。一旦这些真菌开始生长,它们会尽快产生更多的孢子,这就是它们生长速度如此之快的原因。 Eunice the Unicorn: 作为一个对微生物学充满热情的独角兽,我了解到霉菌是真菌的一种,与蘑菇是近亲。更令人惊奇的是,霉菌孢子中含有黑色素,这与赋予人类皮肤颜色的物质相同。霉菌利用黑色素来保护自己免受阳光照射、极端温度和其他不利环境的影响,就像穿上了一层彩虹色的盔甲。

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From the brains behind Brains On, this is the Moment of Um. Answering those questions that make you go, Um. Moment of Um comes to you from APM Studios. I'm Eunice the Unicorn. Hi, hello, I'm Eunice. Oh,

I said that already. Okay, well, some fun facts about me. I sneeze sparkles. I love grapes.

And, oh, and my favorite color is rainbow. Yep. Okay. Is that cheating because it's all the colors? Nah, I'm magic. I can do what I want. Oh, and I'm not just a magic unicorn. I said I was a unicorn, right? Well, I'm not just a magic unicorn. I'm also a budding microbiologist. That's just a fancy word for someone who studies really tiny stuff like germs.

I'm taking microbiology classes at Unicorn U to study all the things cute and tiny. Sometimes I combine my love of all the colors and my love of tiny things to make micro rainbows. Here, look in this microscope. See this tiny rainbow? Well, it's made of grains of sand from different beaches. We got green sand, pink sand, red sand. Oh, and see this slide?

It's my multicolor mold collection. You know, mold, the stuff that grows on old food and in wet places. We've got yellow mold, white, green, pink. My favorite is all of them. You know why there are lots of different colors? No, I'm really asking. Do you know why? Because I have no idea. My pal Max asked too. Why does mold have different colors? Let's ask someone who knows a lot about this.

If you like molds to some degree, they're kind of pretty because they have lots of colors. I'm Jonathan Schilling. I'm at the University of Minnesota in the College of Biological Sciences. For one, the fungi are more similar to us than they are to plants.

They are an entire, what are called kingdom of organisms. And they include the yeasts. We use those for making bread and other things. And then they also include these filamentous fungi, which produce things like mushrooms that we can grow and eat. But one of these filamentous groups is really focused on growing very fast.

and producing spores, lots and lots of spores, so that it can grow as quickly as possible in one place and move on to another location that might be more favorable. And those pigments are specific to these fungi. So some of them are green. They produce tons and tons of green spores. Some maybe produce brown spores. Some might be black. And every once in a while, you'll get like pinks and yellows.

They will grow, and as soon as they can, for some of these fungi, as soon as they can, they will begin producing more spores. So that's what happens with it, and that's why it can grow so fast. Wow. Okay. Wow. Mold is a type of fungus, so it's in the mushroom family. I met a family of gnomes that lived in a mushroom house once. It was pretty small, though, so I guess it didn't have mush-room.

Good one, me. And isn't it wild that mold spores have melanin in them? That's the same stuff that gives human skin color its color, too. Mold makes melanin as a way to protect itself from the sun's rays, extreme temperatures, and other stressful stuff. It's like its rainbow-colored armor.

I gotta gallop. I need to get to my microbiology class. I don't want to be late. The teacher is an actual troll and you do not want to make a troll mad, okay? Because he'll take points off your grade. Yikes! If you like this episode, take a second to subscribe to Moment of Bump wherever you listen to podcasts. And if you like unicorns, then who doesn't? Check out Smash Boom Best. We have a whole episode about debating dragons versus unicorns.

Want to see our shows come to life? Head to YouTube where we've got awesome animated Brains On episodes. Search Brains On Universe on YouTube and subscribe. If you have a question, we'd love to help you answer it. Drop us a line by going to brainson.org slash contact. See you next time and the next day and every weekday. Until then.

Hmm, which colored pencil should I take notes with today? I know, all of them.