Biology Reference
In-Depth Information
Umbravirus
Phytoplasma
(+)ssRNA; isometric particles; enveloped; carrot
mottle virus.
Classification, presented below, based on restric-
tion fragment length polymorphism or putative
restriction site analysis of 16s rRNA gene
sequences according to Davis and Sinclair
(1998).
Aster yellows group: tomato big bud, Michi-
gan aster yellows, clover phyllody, Paulownia
witches'-broom, blueberry stunt, apricot chlo-
rotic leafroll, strawberry multiplier.
Peanut witches'-broom group: peanut witch's-
broom, witches'-broom of lime - “
Candidatus
Phytoplasma
aurantifolia
”, faba bean phyllody,
sweet potato little leaf.
X - disease group: X - disease, clover yellow
edge, pecan bunch, goldenrod yellows, Spirea
stunt, milkweed yellows, walnut witches'-broom,
poinsettia branch-inducing, Virginia grapevine
yellows.
Coconut lethal yellows group: coconut lethal
yellowing, Tanzanian coconut lethal decline.
Elm yellows group: elm yellows, cherry lethal
yellows, flavescence doree. Clover proliferation
group: clover proliferation, “Multicipita” phyto-
plasma. Ash yellows group: ash yellows.
Loofah witches'-broom group:
Varicosavirus
dsRNA; rod-shaped particles; not enveloped; let-
tuce big-vein virus.
Waikavirus
Sequiviridae
; (+)ssRNA; isometric particles; not
enveloped; rice tungro spherical virus.
Viroids
Unencapsidated, small circular ssRNAs. Viroid
replication parasitizes plant host transcription.
Known described viroids are: apple dimple fruit
viroid, apple scar skin viroid, Australian grape-
vine viroid,. avocado sunblotch viroid, chrysan-
themum chlorotic mottle viroid, chrysanthemum
stunt viroid, citrus bent leaf viroid, citrus
exocortis viroid, citrus III viroid, citrus IV viroid,
Coleus blumei 1 viroid, Coleus blumei 2 viroid,
Coleus blumei 3 viroid, Columnea latent viroid,
coconut cadang-cadang viroid, coconut tinangaja
viroid, grapevine yellow speckle 1 viroid, grape-
vine yellow speckle 2 viroid, hop latent viroid,
hop stunt viroid, Iresine viroid 1, Mexicana
papita viroid, peach latent mosaic viroid, pear
blister canker viroid, potato spindle tuber viroid,
tomato apical stunt viroid, tomato planta macho
viroid.
loofah
witches'-broom.
Pigeon pea witches'-broom group: pigeon pea
witches'-broom.
Apple proliferation group: apple proliferation,
apricot chlorotic leafroll, pear decline, Spartium
witches'-broom, black alder witches'-broom.
Rice yellow dwarf group: rice yellow dwarf,
sugarcane white leaf, leafhop-per-borne.
Stolbur group: stolbur phytoplasma, Austra-
lian grapevine yellows - “
Candidatus
Phyto-
plasma
australiense
”.
Mexican periwinkle virescence group: Mexi-
can periwinkle virescence. Bermudagrass white
leaf group: Bermudagrass white leaf.
