crown gall


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crown gall

n.
A widespread plant disease caused by Agrobacterium tumefaciens and characterized by the formation of tumorous galls, especially at the junction of root and stem.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
Crown gall has been observed, while phylloxera has not yet led to vine decline in Indiana.
Crown gall infection takes place not only in vineyards but also in nurseries.
"There have been clues that this technique might be used to produce disease resistance in plants, but we were surprised to discover just how well it actually works in the case of crown gall disease."
Crown gall tumors can be maintained as undifferentiated masses of tumor cells in tissue cultures without the infecting bacteria and added hormones required for cell culture of normal tissues.
tumefaciens, is a gram-negative rod that is the causative agent of Crown Gall Disease.
Don't confuse crown gall with clumsy graft unions, which may make swellings but don't show notable changes in color or texture.
Avoid injury to the vine from grape hoes, string trimmers, large pruning wounds, etc., because they create portals for opportunistic bad guys such as crown gall.
Crown gall is a serious problem in cold-climate vineyards, and every effort should be made to find certified crown gall-tested nursery materials.
In the continental climate conditions in the East, one of the worst vine ailment s is crown gall, caused by Agrobacterium vitis.
Hot water dipping was popularized in Australia as a successful defense against nematodes and crown gall, according to Vintage founder and co-owner Greg Sanders.
Major projects include the biology and control of grape crown gall, development of transgenic grapes for disease resistance and determining mechanisms of fungal-induced apple russet.