The witches broom of legumes is not mentioned in lent is caused by
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Witches’-broom, symptom of plant disease that occurs as an abnormal brushlike cluster of dwarfed weak shoots arising at or near the same point; twigs and branches of woody plants may die back. There are numerous causes, including rust (Gymnosporangium and Pucciniastrum); Apiosporina, Exobasidium, and Taphrina fungi; mites; insects; viruses; mycoplasmas; bacteria; and mistletoes. Susceptible plants include alder, alfalfa, Amelanchier, birch, California buckeye, Chamaecyparis, cherry, cherry laurel, elm, eucalyptus, fir, hackberry, Holodiscus (ocean spray), honey locust, juniper and red cedar, manzanita, mountain heath, mulberry, oak, potato, rhododendron, rose, sophora, spruce, and strawberry
Aster yellows, plant disease, caused by a phytoplasma bacterium, affecting over 300 species of herbaceous broad-leafed plants. Aster yellows is found over much of the world wherever air temperatures do not persist much above 32 °C (90 °F). As its name implies, members of the family Asteraceae are vulnerable to infection, though the disease can also affect a variety of common vegetables, cereals, garden plants, and wild species
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