Method of Gas Exchange in a Fungus

Fungi exchange most of their gases underground.
••• fungus image by Alistair Dick from Fotolia.com

There are many different types of fungi growing throughout the world in a wide variety of environments and living conditions. Fungi do not have the complex structures that plants do, which allow plants to use sunlight efficiently and produce large amounts of their own energy. Instead, fungi must rely on more flexible methods of absorbing the necessary gases and gaining their energy from the environment around them.

Methods Of Acquiring Gases Underground

Fungi do most of their growing underground, away from the sunlight and open atmosphere where plants grow. However, fungi also breathe like other types of plants, despite their existence underground. They manage this through the natural pores in soil. Soil is made of many different substances, include particles of minerals, water, roots and organisms like fungi. In between these particles there are small pockets of air. This air, like the air in the upper atmosphere, contains everything plants need to absorb from the air, especially oxygen.

If you were to remove an entire fungus specimen from the ground, you would notice a large number of thread-like roots that make up most of the fungus body. These hair structures are known as hyphae, and they can be so small that it is difficult to distinguish them from the soil around the fungus. These hyphae can grow into spaces that plant roots cannot and can absorb the oxygen from the microscopic pockets in the soil itself, exchanging gases with the soil instead of the atmosphere. When a fungus produces mushrooms or other growths, they exchange gas with the atmosphere just as plants do.

Parasitic Relationships

Some types of fungus grow in very specific relationships with only life forms. The mycorrhizal fungus, for example, lives on a tree and grows myco-heterophyte parasites. The fungus absorbs nutrients from the tree and passes them onto the parasite growth, taking necessary nutrients along for itself. This type of particle exchange is rare and only applies to certain fungus relationships.

Exceptions

Some types of fungus exchange gases based on their environment. Yeast, for instance, conducts respiration based on the presence of oxygen. If oxygen and air are available, the yeast absorbs oxygen through tiny pores in aerobic respiration. If there is no oxygen present, the yeast performs anaerobic respiration, absorbing what nutrients it can and causing fermentation in the process.

Related Articles

What Are Mycelia in Microbiology?
Characteristics of Kingdom Fungi Organisms
How Are Bacteria a Part of Recycling & Biodegrading?
In What Type of Habitat Would You Find a Protist?
Why Do the Lungs Feel Spongy?
Parts of a Fungus
Is Lichen an Autotroph?
The Importance of Water in Seeds Germination
Common Types of Fungi Found in Soil
List of Microaerophilic Bacteria
What Is the Difference Between Permeable & Impermeable?
What Does Seaweed Need to Live?
What Are the Characteristics of the Protista Kingdom?
Types of Fungi Plants
List Some Types of Bacteria Found in Soil
What Role Do Fungi Play in Food Chains?
Septate vs. Non-Septate Hyphae
Lichens That Live in the Tundra
Fungus Vs. Mold