Chapter 8: Ascomycota (ascomycetes)

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You know, fungi are everywhere.

I mean, mushrooms on pizza, mold on old bread, right?

But what if we told you there's one particular group that's just incredibly vast and impactful, shaping our world in ways you might not even realize?

Welcome back to The Deep Dive.

This is where we take complex information and, well, we dive deep trying to pull out the most important nuggets for you.

Today we're embarking on a really fascinating journey into the phylum Ascomycota.

You often just hear them called Ascomychetes.

Yeah.

Our mission here is to kind of uncover how this ancient, incredibly diverse group manages to be so dominant and so impactful, shaping our world from, you know, the medicine in your cabinet to the food on your plate.

We're drawing insights from introduction to fungi.

And trust me, you'll never look at a sac fungus quite the same way again.

Indeed.

We're going to try and cut through some of the denser scientific details, highlight the key features of this group, reveal their sometimes surprising ecological roles, and their just immense significance.

I mean, we're talking about something like 32 ,000 described species, but potentially 10, maybe even 20 times more waiting out there to be discovered.

Okay, let's unpack that name first.

Ascomycota.

It comes from Greek, right?

Ascus, meaning like a leather bottle or sac, and mykes, meaning fungus.

So literally sac fungi.

Named for their defining feature,

this thing called the Ascus.

And this Ascus, it's this tiny sac -like structure, usually holding eight spores, sexually produced spores, called Ascospores.

And

they're often ejected with sort of squirt mechanism.

It's quite an incredible adaptation.

It really is.

And the structural diversity in this group, it's really quite remarkable.

You've got some Ascomy seeds that exist as just simple unicellular yeasts.

They multiply by budding or fission.

Pretty straightforward.

While others grow as these, you know, extensive networks of thread -like structures called septate hyphae.

And these form what we generally know as mycelia.

Right, the fuzzy stuff you might see.

And some can even switch between those two forms, becoming dimorphic.

Exactly.

Like Candida albicans, the one that causes thrush.

That's a classic example, yes.

The dimorphic fungus, it can switch depending on the environment.

What's fascinating there is just how adaptable their internal structure, their architecture, really is.

It is.

The mycelial hyphae, these threads, they're usually divided by incomplete septa.

So think of it less like completely separate rooms, and more like a series of interconnected chambers with, well, open doorways between them.

This central pore allows for cyto -clasmic continuity.

Stuff can just stream between adjacent segments.

Cellular components like mitochondria, even nuclei, can travel pretty freely from one part of the network to another.

Wow.

It effectively makes the entire mycelium function almost as one large continuous shared cell.

We call that characteristic co -cytic.

Co -cytic?

So the whole fungal network can basically share its cellular contents.

That sounds incredibly efficient, but maybe a bit risky.

Like what if something gets damaged?

Does it all just leak out?

Do they have a quick fix for that?

They absolutely do, precisely.

They have these proteinaceous structures called waronin bodies.

They're usually clustered right near those central pores.

Think of them as like microscopic emergency plugs or repair crews.

If a hypha gets physically damaged, maybe broken,

these tiny protein plugs immediately seal off the injured section.

Instantly.

Pretty much instantly, yeah.

Preventing the loss of vital cytoplasm.

It's an ingenious, lightning -fast defense mechanism, and it's unique to eskimoids seeds and their close relatives.

It really highlights how even tiny specialized structures are critical for their resilience for spreading in sometimes harsh environments.

That's incredible how efficient they are at sharing resources and then patching themselves up on a cellular level.

But that's sort of collaborative spirit.

It doesn't stop just that the cytoplasm does it.

It goes deeper, right down to their genetics.

Absolutely.

Yeah, the mycelia themselves can be homo -karyotic, where all the nuclei are genetically identical, like clones.

Or they can be hetero -karyotic, meaning they contain nuclei of different genetic kinds within the same shared cytoplasm.

How does that happen?

Well, hetero -karyons often form through something called anastomosis.

That's basically the cytoplasmic fusion of two different vegetative hyphae when they meet.

So they just kind of merge.

They merge, yeah.

And this genetic mixing gives the mycelium incredible flexibility, allows it to adapt to changing conditions, maybe express new traits.

Sometimes you can actually see this mixing visually as different -looking sectors in a fungal colony growing on a petri dish.

Okay, so this inherent flexibility, it extends right into their reproduction, which is, as you said, surprisingly varied.

They have the standard sexual life cycles, but also asexual ones,

and even this unique thing called a parasexual cycle.

Ah, yes, the parasexual cycle.

It's a really fascinating adaptation, especially important for fungi that maybe appear to be purely asexual or rarely reproduce sexually.

It's a process where genetic recombination happens, but it happens through nuclear fusion and then crossing over during mitosis.

Normal cell division, not meiosis.

So like a genetic mix and match, but skipping the whole sexual reproduction event.

Kind of, yeah.

You get the mixing.

Then haploidization, getting back to the normal number of chromosomes, happens by the gradual sort of random loss of chromosomes during subsequent divisions.

So it's like a partial substitute then for sexual reproduction, ensuring they still get genetic variability even if they don't do meiosis often or at all?

Exactly.

It's a way to maintain adaptability.

This process was famously first figured out in Emmerichella nidulans, which is actually the sexual stage of an aspergillus.

It helps explain how many apparently asexual fungi, like lots of aspergillus and penicillium species, can still achieve genetic variability and evolutionary success.

It's key to their widespread adaptability.

Okay.

Now, for their actual true sexual life cycles, those involve nuclear fusion and meiosis happening inside that defining structure, the oscus.

But how do these microscopic organisms even manage to, you know, find each other and combine their genetic material, especially in such a varied group?

Well, their mating behavior can be homothallic.

Meaning they can.

Meaning a mycelium that grew from just a single ascospore can reproduce sexually all on its own, like sardariothimicola, a common dung fungus used in labs.

Self -sufficient.

Right.

Or they can be This means they need two different compatible mating types to come together.

We often just label them as A and A.

Okay.

So when these compatible types need to get together, how does that actually happen?

What's the process?

It starts with plasmodomy, which is just the fusion of their cytoplasm.

And how does that fusion happen in practice?

Are there different ways?

There are a few clever ways.

Yeah.

Sometimes you have specialized male and female structures

that physically fuse.

You can imagine like a filamentous extension, the trichogine, growing out from the large female structure, the ascogonium, and it reaches out to connect with a male structure, the antheridium.

Pyranium and domesticum does this.

In other cases, it might be a small unicellular male gamete, basically a fungal sperm, called a spermatium, which fuses with a differentiated female ascogonium.

Neurosporacrosa, the bread mold used in genetics, does this.

Okay.

And then sometimes it's incredibly straightforward.

Fusion just happens between totally undifferentiated hyphae.

No recognizable sex organs involved.

That's called somatogamy.

Corprobia granulata demonstrates this.

So different methods, but the key is that cytoplasmic fusion kicks off the whole sexual cycle.

Exactly.

That's the first step towards making those akimene.

Beyond all the sexual stuff, many ascomycetes also reproduce asexually, mostly using these things called knidia.

In fact, you mentioned aspergillus and penicillium, a lot of fungi that used to be dumped into this category called deuteromicotina, or fungi imperfecting.

The imperfect fungi.

Basically, where scientists hadn't found a sexual stage yet, many of those turned out to be just the knidial forms, the asexual forms of ascomycetes.

That's absolutely right.

Many, many common molds fall into that category.

Their asexual reproduction via knidia is incredibly effective.

So these asexual spores, the knidia, they come in all sorts of shapes and sizes.

Oh, incredibly diverse in form and structure, yes.

But how they develop, the actual process of knidia genesis, occurs in a relatively limited number of fundamental ways.

Can you give us a clearer picture of how they form, especially for us listening without pictures?

Sure.

There are two main modes, blastic and phthalic.

Yeah.

Imagine the spore developing by simply blowing out from part of a cell wall, almost like inflating a tiny balloon from the parent cell.

That general process is blastic knidia genesis.

Okay, blowing out.

Yeah.

And a really fantastic example within that is phialitic development.

Here you have a specialized cell, often flask -shaped, called a phialide.

This phialide continuously produces a chain of knidia one after the other, almost like a little spore -producing conveyor belt.

Ah, hence the chains you see in diagrams of penicillium.

Exactly.

That's why aspergillus and penicillium can produce such vast numbers of spores and spread so rapidly.

The phialide just keeps secreting new wall material at its tip to push out the next spore in the chain.

Now, the other main type, phthalic knidia genesis, is maybe a bit simpler conceptually.

It happens when a pre -existing segment of a hypha is just converted, partitioned off, and becomes a knidium.

So it doesn't blow out, it's just sectioned off.

Right.

Think of maybe a piece of hyphal string that certainly gets divided into segments, and then those segments break off into individual spores, like beads.

That's essentially phthalic arthric knidia genesis.

Geotrichum candidum, a common soil fungus sometimes found on cheese, does this.

Wow.

Okay.

That's a lot of ingenious ways to just make a spore.

And where do these spores kind of hang out before they get dispersed?

Are they just loose?

Not usually loose, no.

They can be born on simple stocks, we call those knidifores, or they can be aggregated into more complex, often quite visible structures called conidiomata.

Well, these vary a lot.

You can have compact bundles of knidifores called caremia or cinnamata, or cushion -like masses called sporadokia, sometimes saucer -shaped ones called acervuli that actually erupts through the surface of a host plant tissue.

Bursting out.

Yeah.

And some, like pichnidia, are these flask -shaped structures.

The spores are produced inside, and then they often ooze out in slimy masses.

Slimy.

How does that help?

Well, that slime often helps with dispersal by rain splash.

A raindrop hits the ooze, and it splashes spores everywhere.

It's a brilliant strategy for getting around in wet conditions.

Okay.

So back to the sexual side, the ascus.

That's where the real magic happens for sexual reproduction.

How does this critical sac actually form, and how do those eight spores get neatly packaged inside?

Right.

In most ischymaces, the ascus develops from a specialized type of scoginous hypha.

The tip of this hypha curls back on itself, forming a hook shape we call a crozier.

It looks a bit like a shepherd's crook.

A crozier.

Inside this hook, or just below it, two compatible nuclei, which came together during clausogamy earlier, finally fused.

That forms the deployed nucleus, the only deployed stage in the life cycle.

This deployed nucleus then immediately undergoes meiosis, the reduction division followed usually by one round of mitosis.

Meiosis then mitosis.

That gives you?

Typically eight haploid nuclei, and these are destined to become the ascospores.

Okay, but how do they get, you know, carved out?

How do they become individual spores within that sac?

It's actually quite an elegant cellular process.

A system of double membranes, which are continuous with the cell's internal membrane network, the endoplasmic reticulum, essentially extends out from near each nucleus.

These membranes grow, infold, and eventually fuse around a portion of the ascus cytoplasm and one of the haploid nuclei, effectively cutting out each ascospore from the surrounding cytoplasm.

Like drawing a bag around them internally?

Exactly like that.

Then, the spore walls are secreted between those two delimiting membranes,

often forming several layers.

Sometimes these walls are quite ornate, you know, with spines or ridges, or they might be pigmented perhaps for protection against UV light.

And some ascospores have other amazing adaptations too, right, for dispersal?

Yeah, absolutely.

Many have this mucilaginous sort of slimy outer layer called the paraspore.

Now, this isn't just decoration, it can help with nucleation during that forceful ejection we talked about.

Ah, makes sense.

It also helps them attach to surfaces once they land.

And, get this, it can even cause spores to stick together as they're shot out, forming multi -spores projectiles,

essentially a heavier clump of spores that can travel further than a single tiny spore, like a fungal slingshot.

Wow.

And in aquatic and marine ascoma seeds, the spores often have these really elaborate, often thread -like appendages.

These unfurl once they hit the water, increasing drag, slowing sedimentation, and helping them snag onto submerged surfaces, like leaves or wood in a stream.

Incredible adaptations.

And the ascus wall itself, the sac,

it's not always the same structure, is it?

The way it opens seems like a really big deal for getting those spores out effectively.

Absolutely.

The structure of the ascus wall and how it opens, its dehescence mechanism, are key features used in classification.

Some acai are called opriculant, think operator lid.

They actually open with a built -in lid or a cap, like a tiny trap door popping open.

Cool.

These are characteristic of certain groups, especially many of the cup fungi, the pitsysalis.

Okay.

Most ascoma seeds, however, have inopriculant acai.

They open through just a simple pore, or maybe a slit, at the apex.

And many of these inopriculant acai also have a specialized structure right at the tip called an epical ring or annulus.

This function is kind of like an elastic sphincter.

It can contract and expand to help squeeze the spores out through the narrow opening and maintain the internal pressure.

Right.

And then the moment of truth, the discharge.

How do these tiny sacs generate enough force for that powerful expulsion you mentioned?

It's all about turgor pressure.

The explosive release of ascus spores is driven by a rapid increase in the internal water pressure within the ascus.

This happens because the fungus actively pumps solutes into the ascus, causing water to rush in via osmosis.

Builds up pressure.

Exactly.

This pressure becomes quite significant, causing the ascus wall to stretch, and eventually, usually at the pre -weekend tip, it bursts open.

And in those cup fungi, you can actually see this sometimes.

You can.

With some larger cup fungi, if the conditions are right, you can sometimes witness puffing.

This is where large numbers of ascus spores mature and discharge simultaneously, creating a visible cloud of spores rising from the cup.

It's quite dramatic.

Wow.

And what's truly fascinating from a physics perspective is that these discharging ascus spores are among the fastest accelerating biological objects known.

The acceleration is incredible to achieve the necessary range.

It's just wild to think all this microscopic high -speed drama is happening constantly, you know, just beneath our feet or on a piece of bark.

So it's typically this violent ejection for maximum dispersal, right?

But not always.

You mentioned truffles.

Correct.

Not always explosive.

Some ascomycetes have evolved different strategies, particularly those with more globose, less elongated ashy, or those that form their fruit bodies entirely underground, like the true truffles, tuber species.

These don't discharge their stores violently.

It wouldn't do any good underground.

Right.

Instead, their ashy might just break down, releasing the spores passively within the mass that attracts insects, which then carry them away.

Or in the famous case of truffles, the mature fruit body develops a strong, distinctive odor.

The smell everyone pays so much for.

Exactly.

That odor attracts animals, pigs, rodents, deer, who dig them up, eat them, and then disperse the spores in their droppings somewhere else.

They've essentially evolved a way of effectively turning forest creatures into their personal spore couriers.

Talk about a sophisticated dispersal strategy.

Okay.

So we've talked about the ashy as the spores, the discharge.

What about the larger structures that we might actually see?

These are what we often think of as mushrooms, although I guess for ascomycetes, they come in a much wider, maybe stranger array of forms than the typical mushroom shape.

That's right.

These are the asco -carps, or ascomata, the fruit bodies that house the assy.

And their forms are incredibly varied, as you say, and often help define different groups of ascomycetes.

So for our audio listeners, maybe let's try to visualize a few basic types.

An apothecium.

Think of an open saucer -shaped or cup -shaped structure.

The assy are produced in a layer, the hymenium, that's freely exposed on the upper or inner surface, like a miniature goblet or bowl.

Okay.

Cup fungi.

Makes sense.

This is common in those cup fungi.

Yes.

And also in many lichens, you might see growing on rocks or trees.

Then there's the parathesium.

This is more glass -shaped.

Imagine a tiny bottle or flask, usually embedded in some tissue, with a narrow neck that opens to the outside via a small pore called an osteole.

So the spores shoot out through that little hole?

Precisely.

Sordaria and Neurospora, those lab favorites, have parathesia.

And finally, think about a kleistathesium.

Kleistome meaning closed.

This is completely enclosed, usually globose or spherical fruit body.

It has no natural opening at all.

So how do the spores get out?

The wall just decays or breaks down eventually to release them.

Many common molds, like species of aspergillus and penicillium that have sexual stages,

form these kleistathesia.

They look like tiny sealed capsules.

Okay.

Epithesium cup, parathesium flask, kleistathesium closed sphere.

Got it.

So they're incredibly diverse in form, incredibly diverse in function.

How does all this cellular cleverness and structural variety translate into their just astonishing success and impact out there in the wild and on our lives?

Well, Ascomycyta have a remarkably wide range of ecological lifestyles.

It's truly impressive.

Many, perhaps most, are saprotrophs, decomposers.

They break down dead organic matter leaves, wood, dung, even complex materials like keratin or cellulose.

They are absolutely crucial recyclers in nearly every ecosystem on the planet, breaking down the dead stuff and returning nutrients to the soil.

How vital.

Absolutely vital.

Others, of course, are parasites.

They live on or in other living organisms causing diseases.

Think of things like powdery mildews or apple scab on plants or fungal infections like thrush or ringworm in animals and humans.

And then some are endophytes.

Endophytes.

Yeah.

These are fungi that grow inside plant tissues, often within the leaves or stems, but without causing any obvious symptoms of disease.

And often these endophytes actually benefit their plant hosts, maybe by producing toxins that deter herbivores or by increasing drought tolerance.

It's a more hidden interaction.

Fascinating.

And they form some truly monumental partnerships too, don't they?

Symbiotic relationships.

Yes.

Absolutely key players in mutualistic symbiosis where both partners benefit.

About 40%, nearly half of all described ascomycete species are involved in forming lichens.

40%.

That's huge.

It's staggering.

Lichens, as you know, are these fascinating dual organisms.

It's a stable self -supporting association between an ascomycete fungus, the mycobiont, and a photosynthetic partner, the photobiont, which is usually a green alga or sometimes a cyanobacterium.

And together they can live where neither could alone.

Exactly.

They form this incredibly tough partnership that can colonize bear rock, tree bark, arctic tundra, really extreme environments.

Ascomycetes also form vital microisole relationships with plants.

Right.

The root helpers.

The root helpers, yeah.

They're particularly common with trees like oak, beech, birch.

The fungal hyphae associate closely with the plant roots, forming a mantle or network.

This vastly increases the root system's surface area for absorbing water and mineral nutrients like phosphorus from the soil which the fungus provides to the plant.

In return, the plant gives the fungus sugars from photosynthesis.

Truffles fit in here.

Yes.

The famous true truffles, tuber species, and also the less famous but ecologically important false truffles, the elaphamycete species, are prime examples of ectomycorrhizal ascomycetes.

Their fruit bodies form underground in association with tree roots.

Given this incredible diversity, these critical roles, these ancient partnerships,

just how ancient are these fungi?

What does the fossil record tell us?

Well, ascomycetes are a truly ancient group.

There's fossil evidence, fossilized structures that potentially represent ascomycetes found in rocks dating back maybe a billion years.

A billion?

Wow.

Though interpretation of very old fossils is always tricky.

But we have suggestions of like -and -like associations perhaps 600 million years ago, and we have definite, unambiguous fossil parethesia, those flask -shaped structures found in the Rhynie Chert from Scotland dating back about 400 billion years ago.

So they were around making complex structures well before vascular land plants really took over.

Absolutely.

They were established early, and some fossils found preserved in amber, maybe 20 million years old, look virtually identical to modern species of certain groups,

suggesting very little evolutionary change in some lineages over vast timescales.

Incredible stasis, and relationship -wise.

They are considered a sister group to the Basidiomycota, the group that includes most familiar mushrooms.

Their common ancestor is estimated to have lived around 600 million years ago, maybe more.

So these organisms have been shaping Earth's biology for an astonishingly long time.

Okay, so after diving into all these, you know, intricate details, the warrenen bodies, the crows ears, the puffing ashament, what does this all mean for us?

Why should you, our listener, really care about these sacrum vertebrae?

Well, their scientific and economic significance is just immense.

It truly impacts our everyday lives in countless ways, scientifically.

Think about Neurosporacrassa, the red bread mold.

Work on that fungus by Betel and Tatum led to the One Gene One Enzyme Hypothesis, a cornerstone of modern genetics.

Foundational study.

Absolutely.

And then you have the yeasts, budding yeast Saccharomyces cerevisiae and fission yeast Schizosaccharomyces pombe.

They were among the very first eukaryotes to have their entire genome sequenced.

Research on them has provided fundamental insights into everything from anaerobic respiration fermentation to the basic mechanisms of cell division and the cell cycle.

Understanding the cell cycle in yeast has even informed cancer research in humans.

Wow.

Okay, so scientifically crucial.

What about economically?

The benefits?

Economically, on the beneficial side, where to start?

They are absolutely vital for alcoholic fermentations.

Wine, beer, that's Saccharomyces yeast at work.

They are the source of some of our most important life -saving antibiotics.

Penicillin from Penicillium crusogin, formerly notatum.

Cephalosporins from acrimonium, formerly cephalosporins.

Huge medical impact.

Enormous.

They're used industrially to produce organic acids like citric acid, which is in tons of foods and drinks produced by Aspergillus nigra.

They give us the immunosuppressant drug cyclosporin, originally from Tollipicladium inflatum, which is absolutely fruitful for preventing organ transplant rejection.

They're essential in food production beyond alcohol.

Bread making relies on yeast carbon dioxide production.

Cheese ripening, think Roquefort camembert brie, uses Penicillium rocaforti or pea camembert key for flavor and texture.

Cheese.

Soy sauce production uses Aspergillus verizzi.

And even mycoprotein, like corn, is made from the mycelium of an ascomycete, Fusarium venenatum.

Corn.

And of course we eat some directly as gourmet foods.

The highly prized morels, marcellus species, and truffles, tuberspecies.

Okay, that's a massive list of benefits.

But they can also cause significant harm, can't they?

There's a dark side.

Unfortunately, yes.

There definitely is.

They are responsible for a huge amount of food spoilage, causing massive economic losses worldwide.

Molds on grains, fruits, bread, often ascomycetes,

and some produce dangerous toxins.

A major historical and ongoing concern is the ergot fungus, claviceps purpurea.

It infects rye and other grains.

Eating contaminated grain causes ergotism, a severe, sometimes fatal disease in humans and cattle, known historically as synanthides fire.

Nasty stuff.

Very nasty.

Interestingly, studies on the potent toxins it produces, the ergot alkaloids, actually led to the discovery of useful drugs for treating migraines and controlling bleeding after childbirth.

But those same studies also led to the synthesis of the powerful hallucinogen lysergic acid dithelomide, LSD, which has its own complex and notorious history.

Wow, a double -edged sword there.

Very much so.

Another really serious concern is aflatoxin.

This is produced by Aspergillus flavus and related speedies, which commonly contaminate things like peanuts, corn, and cottonseed, especially in warm climates.

Aflatoxin is one of the most potent, naturally occurring carcinogens known.

It's a major public health issue in many parts of the world.

Carcinogenic, wow.

There are other mycotoxins produced by various ascomyces that can cause infertility in livestock,

severe organ damage, or other illnesses in animals and humans who consume contaminated feed or food.

Beyond toxins, there are also just numerous and important pathogens of both plants and animals, causing billions of dollars in crop losses and significant animal health problems globally.

Okay, so definitely a group with huge benefits and also significant risks.

It's clear that this vast, ancient, and incredibly impactful group plays an enormous role on the planet.

How do scientists even begin to classify such a mind -bogglingly diverse phylum?

Is it chaotic?

Well, given their enormous diversity, morphological, ecological, genetic,

detailed, stable classification,

is extremely complex and constantly being refined with new molecular data.

It involves numerous orders and families.

But for simplicity and sort of traditionally, they're often grouped into five major classes.

These are the archaeascomyces, considered early diverging lineages, hemiascomyces, mostly these, and then three groups, often collectively called the higher ascomyces, the plectomyces,

hymenoscomyces, and laculosomysetes.

Okay, those last three, the higher ones, what's the main way to tell them apart, broadly speaking?

Broadly, it relates back to how those ascii are arranged and how the fruit body develops.

The hymenoscomyces typically produce their ascii in an organized fertile layer, that hymenium we mentioned, which is often exposed like on the surface of a cup or lining the inside of a parathesium.

The fruit body sort of develops around this hymenium.

In contrast, in the laculoescomyces, the ascii develop within pre -existing cavities, or locules, inside a mass of fungal tissue called an ascostroma.

The cavities are there first, and the ascii form inside them.

It often leads to a more enclosed structure, sometimes looking like a parathesium, but developing differently.

So it's about how and where the ascii are housed within the larger structure.

Exactly.

These different developmental strategies for housing and protecting the spores reflect their diverse evolutionary paths and adaptations.

What an absolutely incredible journey through the ascomycata.

I mean, from their tiny, often explosive sacs, the ascii, to their absolutely global impact on our food, our medicine, entire ecosystems.

It's so clear these sac fungi are far, far more than just what meets the eye as maybe a bit of mold or a fancy truffle.

They are ancient, unbelievably diverse, and just fundamentally interwoven with life on earth.

Yeah.

This deep dive really does highlight how even seemingly small microscopic structures like that, a six,

or the worrisome bodyplug, or a phyllite, have evolved to perform incredibly complex and vital functions.

Functions that literally shape entire environments and even industries.

It really makes you wonder what other microscopic dramas are playing out constantly right under our noses that are just as wild and just as important.

So what does this all mean for you?

Well, maybe the next time you encounter a fungus, whether it's the yeast that made your bread rise or a patch of colorful mold you quickly clean up, or even a lichen on a rock takes second.

Consider the intricate, ancient, and often hidden world of the ascomycetes and the crucial roles they're playing, and maybe ask yourself, what other overlooked organisms, maybe just as complex and important, might be quietly holding up the world around us, just waiting for us to take a deeper dive?

That's all for this deep dive.

Thank you so much for joining us.

Yeah, we hope you feel maybe a little more well informed about this amazing fungal group.

Until next time, keep exploring.