(ˈwɪtʃˌbruːm) or




(Plant Pathology) a dense abnormal growth of shoots on a tree or other woody plant, usually caused by parasitic fungi of the genus Taphrina
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


an abnormal, brushlike growth of small, thin branches on woody plants, caused esp. by fungi and viruses.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Takahashi, "Seasonal variation of paulownia witches'-broom phytoplasma in paulownia trees and distribution of the disease in the Tohoku district of Japan," Journal of Forest Research, vol.
Zhu et al., "Transcriptomic analysis of Paulownia infected by Paulownia witches'-broom phytoplasma," PLoS One, vol.
The nucleotide sequences for the five positive samples were determined and were found to have 99.3%-100% nucleotide sequences identity among them, and share 97.3-98.8% sequence similarity with seven phytoplasma isolates belonging to the 16S rII (peanut witches'-broom group) obtained from the GenBank database.
Eighty seven alfalfa samples exhibiting typical phytoplasmasymptoms, which included stunting, rosette, discoloration of leaves, witches'-broom and early senescence (Fig.
A member of the peanut witches'-broom phytoplasma group (16Sr II group) of the phytoplasma taxonomy formerly was known under the new invalidated species name 'Candidatus Phytoplasma australasiae' (Firrao et al.
In previously studies DNA hybridization was used for identification of different phytoplasma associated with peanut sweet potato witches'-broom and other phytoplasma disease (Chen and Lin 1997; Ko and Lin 1994).
Black pod rot, fungal diseases, frosty pod rot and witches'-broom cause yield losses to the cacao bean crop that totaled nearly 3 million tons in 1999.
But witches'-broom and other problems caused Brazil to slip to eighth place within the past five years, says John B.
The fungal infections lead to diseases known as black pod rot, frosty pod rot, and witches'-broom.
Witches'-broom is caused by Crinipellis perniciosa.
Lin et al., "High-throughput transcriptome analysis of the leafy flower transition of Catharanthus roseus induced by peanut witches'-broom phytoplasma infection," Plant & Cell Physiology, vol.