The following is a list of diseases in citrus plants.
Bacterial diseases[edit]
Bacterial diseases | |
---|---|
Bacterial spot | Xanthomonas euvesicatoria pv. citrumelo |
Black pit (fruit) | Pseudomonas syringae |
Blast | Pseudomonas syringae |
Citrus canker | Xanthomonas citri pv. citri |
Citrus variegated chlorosis | Xylella fastidiosa |
Huanglongbing = citrus greening | Candidatus Liberibacter asiaticus Candidatus L. africanus |
Fungal diseases[edit]
Nematodes, parasitic[edit]
Nematodes, parasitic | |
---|---|
Citrus slump nematode | |
Dagger nematode |
Xiphinema spp. |
Lesion nematode |
Pratylenchus spp. |
Needle nematode |
Longidorus spp. |
Root-knot nematode |
Meloidogyne spp. |
Sheath nematode | |
Slow decline (citrus nematode) | |
Spreading decline (burrowing nematode) | |
Sting nematode | |
Stubby-root nematode |
Paratrichodorus spp. |
Stunt nematode |
Tylenchorhynchus spp. |
Viral diseases[edit]
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 | genus Ilarvirus, Citrus variegation virus (CVV) |
Navel infectious mottling | Satsuma dwarf-related virus |
Psorosis | Citrus psorosis virus (CPsV) |
Satsuma dwarf | Satsuma dwarf virus (SDV) |
Tatter leaf = citrange stunt | genus Capillovirus, Citrus tatter leaf virus (probably a closely related strain of Apple stem grooving virus rather than a distinct virus |
Tristeza = decline and stem pitting, seedling yellows | genus Closterovirus, Citrus tristeza virus (CTV) |
Citrus Leprosis Virus type I & II |
Viroids and graft-transmissible pathogens [GTP][edit]
Viroids and graft-transmissible pathogens [GTP] | |
---|---|
Algerian navel orange virus | GTP |
Blight = young tree decline, rough lemon decline | GTP |
Blind pocket | GTP |
Cachexia | Citrus cachexia viroid (Hostuviroid) |
Chlorotic dwarf | White-fly transmitted GTP |
Citrus dwarfing | Various viroids |
Citrus vein enation (CVEV) = woody gall | GTP (possible luteovirus) |
Citrus yellow mottle | GTP |
Citrus yellow ringspot | GTP |
Concave gum | GTP |
Cristacortis | GTP |
Exocortis | Citrus exocortis viroid (CEVd) Pospiviroidae |
Fatal yellows | GTP |
Gummy bark | GTP, possible viroid |
Gum pocket and gummy pittings | GTP, possible viroid |
Impietratura | GTP |
Indian citrus ringspot | GTP |
Leaf curl | GTP |
Leathery leaf | GTP |
Leprosis | GTP associated with Brevipalpus spp. mites |
Measles | GTP |
Milam stem-pitting | GTP |
Multiple sprouting disease | GTP |
Nagami kumquat disease | GTP |
Ringspot diseases | Various GTPs |
Xyloporosis = cachexia | Citrus cachexia viroid (Hostuviroid) |
Yellow vein | GTP |
Yellow vein clearing of lemon | GTP |
Phytoplasmal and spiroplasmal diseases[edit]
Phytoplasmal and spiroplasmal diseases | |
---|---|
Australian citrus dieback | Unknown procaryote? |
Stubborn | Spiroplasma citri (spread by leafhoppers) |
Witches’ broom of lime | Phytoplasma |
Miscellaneous diseases and disorders[edit]
Miscellaneous diseases and disorders | |
---|---|
Algal disease (algal spot) | Cephaleuros virescens |
Amachamiento | Unknown |
Blossom-end clearing | Physiological |
Chilling injury | Cold temperatures |
Citrus blight | Unknown - pathogen suspected |
Creasing | Nutritional (?) |
Crinkle scurf | Genetic |
Granulation | Physiological |
Lemon sieve-tube necrosis | Unknown, but hereditary |
Lime blotch = wood pocket | Inherited chimeral agent |
Membranous stain | Cold temperatures |
Mesophyll collapse | Unknown |
Oleocellosis | Physiological |
Postharvest pitting | Physiological |
Puffing | Physiological |
Rind breakdown | Physiological |
Rind staining | Physiological |
Rind stipple of grapefruit | Environmental |
Rumple of lemon fruit | Unknown |
Shell bark complex | Unknown - (viroid?) |
Sooty mold (superficial, not pathogenic) | Capnodium C. citricola |
Stem-end rind breakdown | Physiological |
Stylar-end breakdown of Tahiti lime | Physiological |
Stylar-end rind breakdown | Physiological |
Stylar-end rot | Physiological |
Sunburn | Excessive heat and light |
Tangerine dieback | Unknown |
Water spot | Physiological |
Woody galls on stems | Bruchophagus fellis (Citrus Gall Wasp) |
Zebra skin | Physiological |
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction