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The humble peanut got its '15 minutes of fame' when Jimmy Carter was President, America's rural households are becoming more racially diverse but language barriers still exist, farmers brace for another trade war, and coal miners with black lung get federal help.

Vast Underground Networks of Fungi Integral to NW Forests

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Monday, August 15, 2016   

PORTLAND, Ore. — The season for morel mushroom hunting in Oregon forests is over, but other varieties - like chanterelles - are in season; and King Boletes will be showing up soon. Apart from being edible, research shows mushrooms are much more vital to the forest than previously thought.

It is now believed that at least 92 percent of plant families on earth rely on mycorrhizae, a symbiotic network between fungi and plant roots in the soil. Catherine Creech, biology professor at Portland Community College, said without fungi, forests might not exist at all.

"We now think that the only reason plants were able to move onto land is because they were associated with fungi,” Creech said. "And fungi are great at getting water, which is really important when you move onto land because you dry out."

According to Creech, plant roots and fungi swap nutrients, keeping each other alive. Plants share sugar with the fungi, which gives back water and minerals. Biologists estimate the relationship between plants and mushrooms began more than 400 million years ago.

The largest organism on earth is thought to be a honey fungus found in Oregon's Blue Mountains, Creech said. It measures nearly 2.5 miles in diameter and distributes nutrients to plants that need them, allowing the forest to survive.

"It can take nutrients from one part of its body and bring them miles over to another part of its body,” Creech said, “and in the process, share it with the trees and the plants and even the mosses that it's associated with."

Mushrooms' underground network has been likened to the Internet, Creech said. And according to popular mycologist Paul Stamets, fungi were the first interconnected community on the planet.

The Pacific Northwest has a good mushroom culture because mushrooms - the parts of fungi we most often see - are so prevalent here, Creech said. In addition to forests, mushrooms are key to a healthy agricultural system.

"We need them to keep all of our plants happy, our gardens happy, and our agriculture happy,” Creech said. "There are many species of plants that will not even germinate unless they're in the presence of their mycorrhizal partner."



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