black rot

American  

noun

Plant Pathology.

1. any of several diseases of fruits and vegetables, characterized by black discoloration and decay of affected parts, caused by fungi, as Guignardia bidwellii, or bacteria, as Xanthomonas campestris.

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black rot British  

noun

1. any of various plant diseases of fruits and vegetables, producing blackening, rotting, and shrivelling and caused by bacteria (including Xanthomonas campestris ) and fungi (such as Physalospora malorum )

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Etymology

Origin of black rot

An Americanism dating back to 1840–50

Example Sentences

This wild grape is known for its naturally high sugar content, low acidity, and resistance to fruit cracking, as well as its tolerance to diseases such as black rot and ripe rot.

From Science Daily

It is caused by excess soil moisture, characterized by a black rot that spreads from the roots and eventually kills the tree.

From Seattle Times

He was, like the others, unsuccessful due to attacks of black rot and phylloxera.

From Salon

The circular void that swallows up the silvery light of his composition suggests the black rot that will soon come to these fruits and flowers if they are just left where they are.

From The Guardian

These gradually spread and penetrate the flesh of the apple, producing a black rot, almost as bitter as aloes, but this taste is confined to the discolored portion.

From Project Gutenberg