Citrus psorosis virus phylotype 1 detection test kit by using qPCR. Citrus psorosis virus infect Citrus plants, grapefruit, mandarin, orange and tangerine, lemon, pomelo, and lime. External symptoms can be exhibited in leaves, fruit, bark, trunk, roots, and branches. Leaf infection displays chlorotic flecks, or a decrease in chlorophyll/healthy coloring, mottling, and spots; fruit may show ring-like chlorotic areas.