witches'-broom

witches'-broom

(ˈwɪtʃˌbruːm) or

witchbroom

;

witches'-besom

n
(Plant Pathology) a dense abnormal growth of shoots on a tree or other woody plant, usually caused by parasitic fungi of the genus Taphrina

witch′es'-broom`



n.
an abnormal, brushlike growth of small, thin branches on woody plants, caused esp. by fungi and viruses.
[1865–70]
References in periodicals archive ?
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.
Table 1: Percentage of nucleotide sequences similarity for Saudi isolates of alfalfa witches'-broom phytoplasma and 36
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).
First report of Bituminaria Witches'-broom in Australia caused by a 16SrII phytoplasma.
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.