
1) Plant disease
Found on
https://www.crosswordclues.com/clue/gummosis

Gummosis is the formation of patches of a gummy substance on the surface of certain plants, particularly fruit trees. This occurs when sap oozes from wounds or cankers as a reaction to outside stimuli such as adverse weather conditions, infections, insect problems, or mechanical damage. It is understood as a plant physiological disease. ...
Found on
http://en.wikipedia.org/wiki/Gummosis

A plant disease in which the lesions exude a sticky liquid.
Found on
http://ppathw3.cals.cornell.edu/glossary/Defs_G.htm

(from the article `gum`) ...bark of the tree and collecting the exudate repeatedly throughout the season. Gums so obtained consist of small lumps, usually transparent and ... ...in Java) is characterized by red patches within the canes, and is caused by the fungus Physalospora tucumanensis. Gumming disease (important in ... [2 relate...
Found on
http://www.britannica.com/eb/a-z/g/82

Production of gum by or in a plant tissue.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

[
n] - pathological production of gummy exudates in citrus and various stone-fruit trees
Found on
http://www.webdictionary.co.uk/definition.php?query=gummosis

Plant disease (also gummose) on deciduous trees is caused by physiological disturbances, frost, bacteria or fungi. In the process, a gummy, colourless to black liquid is secreted from the branches and trunk. Similar symptoms are seen when Petri disease (black goo) occurs on the vine.
Found on
https://glossary.wein.plus/gummosis
No exact match found.