EVERYDAY SCIENCE

Detailed explanation-1: -Citrus canker is a citrus disease caused by the bacterium Xanthomonas citri subsp. citri (synonym X. axonopodis pv. citri).

Detailed explanation-2: -Xanthomonas campestris pv. citri (Hasse) Dye], is a serious disease of most commercial citrus varieties and some citrus relatives. The pathogen causes necrotic lesions on leaves, stems and fruit. Severe infections can cause defoliation, badly blemished fruit, premature fruit drop, twig dieback and general tree decline.

Detailed explanation-3: -Citrus canker is a disease affecting Citrus species caused by the bacterium Xanthomonas (X. axonopodis; X. campestris). Infection causes lesions on the leaves, stems, and fruit of citrus trees, including lime, oranges, and grapefruit.

Detailed explanation-4: -Bacterial canker is a disease of the stems and leaves of Prunus, especially plums and cherries, but also apricots, peaches and ornamental Prunus species. It causes sunken patches of dead bark and small holes in leaves, called ‘shothole’.

Detailed explanation-5: -Citrus canker symptoms include brown spots on leaves, often with an oily or water-soaked appearance. The spots (technically called lesions) are usually surrounded by a yellow halo, and they can be seen on both the upper and lower sides of the leaf. Similar symptoms can appear on fruit and stems.