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#Mycorrhizae are a type of fungus that plays a critical role in the development of legumes. Legumes are an important group of plants that can fix nitrogen, which means they can take nitrogen from the air and change it into a form that plants can use. Because of this, they are a key part of many crop rotation and regenerative farming practices. The role of mycorrhizae in the development of legumes is a complex and fascinating process that has far-reaching benefits for both the plant and the soil.

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Mycorrhizae and Legumes

Mycorrhizae form a symbiotic relationship with plants, including #legumes, by colonizing the roots of the plant. The fungus extends the reach of the plant’s roots, allowing it to access nutrients and water that may not be available through the plant’s roots alone. This relationship is particularly crucial for legumes, which require a significant amount of phosphorus to thrive. Mycorrhizae are capable of accessing phosphorus that is bound up in the soil, making it available to the legume. In exchange for this service, the plant provides the fungus with carbohydrates, which the fungus uses for energy.

This symbiotic relationship between mycorrhizae and legumes is not limited to the plant’s roots. The fungus can also colonize the nodules on the plant’s roots, which are responsible for nitrogen fixation. By colonizing these nodules, mycorrhizae can increase the efficiency of nitrogen fixation, allowing the plant to produce more usable nitrogen.

Benefits of Mycorrhizae in the Soil

Mycorrhizae provide a range of benefits to the soil beyond their relationship with legumes. One of their most significant benefits is their ability to #sequester #carbon from the atmosphere and hold it in the soil for long periods. When mycorrhizae colonize a plant’s roots, they also secrete a sticky substance called glomalin. #Glomalin is a glycoprotein that helps to bind soil particles together, creating stable aggregates. These aggregates help to increase soil stability, prevent erosion, and increase the soil’s water-holding capacity.

Glomalin also plays a critical role in carbon sequestration. The glycoprotein is made up of a high percentage of carbon, making it an excellent storage mechanism for carbon in the soil. The stable aggregates created by glomalin can hold carbon for thousands of years, effectively removing it from the atmosphere.

In addition to their role in carbon sequestration, mycorrhizae also play a critical role in increasing soil fertility. By extending the reach of a plant’s roots, mycorrhizae can access nutrients that may be inaccessible to the plant, such as phosphorus, zinc, and copper. This increased nutrient uptake can lead to higher yields and better quality crops.

Conclusion

Mycorrhizae are a crucial component of healthy soils, particularly in systems that include legumes. Their symbiotic relationship with legumes allows for increased nutrient uptake, nitrogen fixation, and higher yields. Beyond their role in plant development, mycorrhizae are essential to carbon sequestration in the soil. Their ability to hold carbon for thousands of years makes them an important tool in mitigating the effects of climate change. As we continue to develop sustainable agriculture practices, it is essential to consider the critical role of mycorrhizae in soil health and fertility.

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