fire blight


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fire blight

[′fīr ‚blīt]
(plant pathology)
A bacterial disease of apple, pear, and related pomaceous fruit trees caused by Erwinia amylovora; leaves are blackened, cankers form on the trunk, and flowers and fruits become discolored.
References in periodicals archive ?
HrcU and HrpP are pathogenicity factors in the fire blight pathogen Erwinia amylovora required for the type III secretion of DspA/E.
By the mid-1800s, pear breeding and trial programs focused on fire blight resistance.
He cited fire blight during spring bloom as another factor.
In recent years, Budagovsky 9 has become an important dwarfing rootstocks due to its tolerance or the bacterial disease fire blight. Although it is possible to plant high density orchards on semi-dwarf rootstocks such as M.7, or semi-vigorous rootstocks such as MM.111, MM.106, M.793, or Marubakaido their lack of precocity is a serious limitation to this approach.
Australia first imposed a ban on New Zealand apple imports in 1921 in order to prevent the spread of 'fire blight': a bacterial disease that damages apple trees and reduces their ability to produce fruit.
She found books with pictures of fire blight and scurfy that
Carl Sagan once said that a "tree and I are made of the same stuff." [Note to editor: I checked, and this is the first time that Carl Sagan has ever been mentioned in this column.] That may explain why the Environmental Protection Agency is allowing Michigan to spray apple orchards with gentamicin to fight a tree disease called fire blight. [First Harry Potter, and now this?
Carl Sagan once said that a "tree and I are made of the same stuff." [Note to editor: I checked, and this is the first time that Carl Sagan has ever been mentioned in this column.] That may explain why the Environmental Protection Agency is granting "emergency" permission to the state of Michigan to spray apple orchards with gentamicin to fight a tree disease called fire blight. [Note to writer: First Harry Potter, and now this?
The EPA granted the state of Michigan "emergency" permission to use the antibiotic, also used to treat gastrointestinal and urinary tract infections, to fight a tree disease called fire blight. Fire blight has become resistant to streptomycin, the antibiotic apple growers had been using.
Fire blight disease has killed many thousands of these trees, and it is no longer recommended for planting.
The most devastating epidemic, fire blight, put an end to most commercial pear growing in the eastern U.S.
apples, designed to prevent a plant disease called fire blight, are not supported by scientific evidence.