The chestnut blight secretes a searing chemical, oxalic acid, into the tree bark, eventually causing cankers and death. In what are called Darling chestnuts, however, a CRISPR-modified wheat gene ...

thin chestnut tree just about 2 feet tall with a section of scraped off bark. “When young male deer in the fall rub their antlers on the bark, that creates an opening for blight fungus to come ...

The chestnut blight is caused by an insidious ... The fungus, Cryphonectria parasitica, spares the young. But as tree bark ages, it cracks, letting microscopic fungal spores enter the trunk ...

Michigan forests are not as “pristine” as some in the media would have us believe. Nearly all Lake States forests are the ...

With craggy bark and shaggy branches of feathery leaves, the American chestnut could reach 100 feet tall during its heyday. Its trunk could be 13 feet wide. The trees huddled along the Gulf Coast for ...

With craggy bark and shaggy branches of feathery leaves, the American chestnut could reach 100 feet tall during its heyday. Its trunk could be 13 feet wide. The trees huddled along the Gulf Coast ...

But there is no indication that the bark beetle could not survive at high altitudes — which is to say, these elms may be living on borrowed time. The chestnut blight does not affect the tree’s ...

“The bark is a much lighter color than the other trees in the forest.” And there’s a surprise, too. Next to the adult, standing about 4 feet tall, rooted in a plastic pot, is an American chestnut ...

The chestnut has not disappeared from the US ... In these trees, the anti-blight action turns on—is induced—only when the tree’s bark is wounded, working something like an animal’s ...

Sunlight filtered through the overstory of a thick Pennsylvania forest and a few rays fell upon the long, serrated leaves of the American chestnut trees down below. The higher Mike Manes, 78 ...