American Heritage® Dictionary of the English Language, Fourth Edition
- n. The pathological formation of patches of gum on certain plants, such as sugar cane and some fruit trees, resulting from attack by insects, microorganisms, or adverse weather conditions.
Century Dictionary and Cyclopedia
- n. In botany, the formation of gum in the older organs of plants by the transformation of large groups of tissue, as in the production of cherry-gum and gum tragacanth.
- n. An abnormal production and flow of gum from cracks or wounds of trees. Apricots, cherries, and plums are especially subject to this disease. Fungi and bacteria are frequently found in the affected tissues and gum and are believed by some authors to be the cause of the pathological conditions. Also called
- n. The formation of patches of a gummy substance on the surface of certain plants, particularly fruit trees, caused by sap oozing from wounds or cankers.
- n. pathological production of gummy exudates in citrus and various stone-fruit trees
- n. disease of citrus trees caused by the fungus Phytophthora citrophthora
- gum + -osis (Wiktionary)
- Latin gummi, gum; see gum1 + -osis. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Symptoms of sunscald closely mimic the gummosis disease, but are restricted to the side of the trunk facing the sun.”
“Reported diseases include a bark gummosis, one defoliation leafspot, and some fungal diseases of seedlings in nurseries.”
“The gum disease (_gummosis, gum-flux) _ is only too well known to all who grow peaches, apricots, plums, cherries, or other stone fruits.”
“A. Sounds like gummosis caused by the bacteria Pseudomonas.”
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