Final answer:
The enzymes produced by tree pathogens include cellulases, pectinases, and polygalacturonases; they help in breaking down plant cell wall components to facilitate pathogen invasion.
Step-by-step explanation:
Enzymes Produced by Tree Pathogens
Pathogens, including tree pathogens, produce various enzymes that aid in their invasion and degradation of host tissues. The correct option that lists enzymes produced by tree pathogens would be A) Cellulases, pectinases, polygalacturonases. These enzymes break down cell wall components, such as cellulose and pectin, which are common in plant cells. This function allows the pathogen to invade and cause disease within the plant tissues.
Cellulases break down cellulose, a primary component of plant cell walls, pectinases degrade pectin, a polysaccharide that is present in the primary cell wall and the middle lamella of plant cells, and polygalacturonases specifically hydrolyze the glycosidic linkages of galacturonic acid in pectin.
While the other listed enzymes in options B), C), and D) such as catalases, peroxidases, lipases, amylases, proteases, chitinases, ribonucleases, deoxyribonucleases, and ligases are produced by various organisms, they are not specifically associated with tree pathogens as the ones listed in option A).