[possible viral aetiology] Citrus chlorotic dwarf virus (CCDV).
Citrus chlorotic dwarf, citrus chlorotic dwarf disease (CCDD).
Vectored by bayberry whitefly (Parabemisia myricae (Kuwana)). It is transmissible by grafting on infected buds, slash inoculation from extracts of infected leaves and bark in phosphate buffer.
Field symptoms consist of chlorotic flecking on young leaves, warping, crinkling, inverted cupping, spoon-shaping and variegation on leaves. Strong chlorosis and dwarfing of leaves are also observed. Grapefruit, lemon, mandarin and sour orange develop more severe symptoms than sweet orange. Diagnosis is made by grafting on rough lemon and Citrus macrophylla preferably in warm conditions
All citrus cultivars are susceptible.
Eastern Mediterranean region of Turkey
Citrus variegation virus (CVV), satsuma dwarf virus (SDV), citrus leaf rugose virus (CLRV), and citrus yellow vein clearing virus (CYVCV).