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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. While not harmful to humans, canker significantly affects the vitality of citrus trees, causing leaves and fruit ...
California and Arizona, Mediterranean region. The Citrus stubborn disease is a plant disease affecting species in the genus Citrus. The causative agent of the agent of the disease is Spiroplasma citri, a Mollicute bacterium species. [1] The bacterium resides in the phloem of the affected plant. Originally discovered in citrus-growing regions of ...
Citrus black spot is a fungal disease caused by Phyllosticta citricarpa (previously known as Guignardia citricarpa). This Ascomycete fungus affects citrus plants throughout subtropical climates, causing a reduction in both fruit quantity and quality. [citation needed] Symptoms include both fruit and leaf lesions, the latter being critical to ...
The three most common groupings of symptoms are decline (quick and slow), stem-pitting, and seedling yellows. [citation needed] Decline is generally exhibited with sweet orange, mandarin, or grapefruit when they are grafted on infected sour orange rootstock. This decline includes chlorotic leaves and general dieback of the infected tree ...
Citrus greening was first found in 2005 in the US and has cut the Orange tree production in half [2][3] Citrus greening disease or yellow dragon disease[4] (calque of Chinese: 黃龍病; pinyin: huánglóngbìng abbr. HLB) [5] is a disease of citrus caused by a vector -transmitted pathogen. The causative agents are motile bacteria, Liberibacter ...
Citrus blight is a type of blight that occurs in tropical and semi-tropical regions. Specializing in infecting citrus trees, the blight is found in North America, the Caribbean, South America, South Africa and Australia. The blight injures plants by forming blockages in xylem and phloem, inhibiting resource distribution and resulting in plant ...
Viral diseases; Citrus mosaic Satsuma dwarf-related virus: Bud union crease Virus for some combinations, otherwise genetic or unknown Citrus leaf rugose genus Ilarvirus, Citrus leaf rugose virus (CLRV) Citrus yellow mosaic genus Badnavirus: Crinkly leaf Crinkly leaf virus (strain of Citrus variegation virus) Infectious variegation
Mandarin oranges growing on a tree in Crete. Citrus reticulata is a moderate-sized tree some 7.6 metres (25 ft) in height. [1] [7] The tree trunk and major branches have thorns. [1] The leaves are shiny, green, and rather small. [1] The petioles are short, almost wingless or slightly winged. [1]