A Study of the Structure of the Stomata of Two Species of Citrus in Relation to Citrus Canker

Xanthomonas

“…Entry into these openings, however, is dependent upon the presence of water in the pores. The relative susceptibility of mandarin and grapefruit leaves to citrus canker was related to the size of the stomatal pores (McLean, 1921). If water is present in the pores, xanthomonads may enter plants through chemotaxic movement of the bacteria , or be drawn into the plant by uptake of the water by the plant tissues (Diachun et al, 1944).…”

Modelling the progress of Asiatic citrus canker on Tahiti lime in relation to temperature and leaf wetness

“…Xcc infects through stomata and wounds on the leaves, stems and fruit. Infection via stomata occurs only in immature leaves, causing a raised corky lesion, visible on both sides (McLean 1921). Severe disease causes fruit drop, defoliation, dieback and overall decline of trees.…”

Mechanisms by Which Genetically Controlled Resistance and Virulence Influence Host Colonization by Fungal and Bacterial Parasites

“…However, the cuticular lips which surround the stomatal vestibule in C. nobilis are thought to exclude bacteria under natural circumstances (McLean, 1921;McLean & Lee, 1922). This relates to differences between two species, Citrus nobilis (mandarin) and £.…”